Sergei Peresada - Profile on Academia.edu (original) (raw)

Papers by Sergei Peresada

The paper presents a novel maximum torque per Ampere (MTA) controller for induction motor (IM) dr... more The paper presents a novel maximum torque per Ampere (MTA) controller for induction motor (IM) drives. The proposed controller exploits the concept of direct (observer based) field orientation and guarantees asymptotic torque tracking of smooth reference trajectories and maximizes the torque per Ampere ratio when the developed torque is constant or slowly varying. A dynamic output-feedback linearizing technique is employed for the torque subsystem design. In order to improve torque tracking accuracy a motor magnetizing curve is taken into account during MTA optimization and controller design. The achieved steady-state system efficiency have been compared experimentally for three types of controllers, namely: standard vector control with constant flux operation, controller based on classic maximization of torque per Ampere ratio for linear magnetic circuit and controller based on MTA strategy for saturated induction motor. It is shown experimentally that the controller designed for saturated induction motor provides not only higher torque per Ampere ratio but also increases power factor and reduces active power consumption hence improving the drive efficiency. Operation with slowly varying torque references has also been analysed. It is shown that the proposed controller is suitable for applications that do not demand an extremely fast dynamic response, for example for electric vehicle drives.

Tekhnichna Elektrodynamika

Torque ripple compensation problem is considered for electrical drives, based on low-cost direct ... more Torque ripple compensation problem is considered for electrical drives, based on low-cost direct drive interior perma-nent magnet synchronous motors. Robustness properties of the speed and position control systems have been studied using time scale separation properties of the current, speed and position control loops. It is shown that system closed-loop dynamics according to new controller design has cascaded properties with speed and position control loops con-nected in series and therefore has potential of high frequency torque ripple compensation by increasing controllers gains. Experimental results are presented for two motors with similar rated data but significantly different level of the torque ripple. It is shown that despite of significand difference in parasitic torque amplitude, the similar position con-trol performance can be achieved. It makes proposed control algorithms suitable for both high dynamic performance and low-cost direct drive applications with medium perfo...

Tekhnichna Elektrodynamika

A flux observer for induction motors which is adaptive to the active rotor resistance variations ... more A flux observer for induction motors which is adaptive to the active rotor resistance variations is presented. Due to the added fluxes overestimation in the observer structure, the global exponential stability properties of the current and flux vector components and active rotor resistance estimation are ensured under conditions of persistency of excitation. The proposed observer has a simpler structure compared to existing solutions with the global stability properties. The simulation results of the observer dynamic performance investigation confirm its effectiveness. It is shown that even if the conditions of persistency of excitation are not met, the active rotor resistance is estimated correctly; consequently, the designed observer can be implemented as an identification algorithm in self-commissioning systems of induction electric drives. References 9, figures 5.

Tehnìčna elektrodinamìka, Jan 31, 2024

ДИСКРЕТНИЙ СПОСТЕРІГАЧ ГАРМОНІЧНОГО СКЛАДУ СТРУМУ ТРИФАЗНОЇ МЕРЕЖІ

In order to compensate the higher order current harmonics caused by the operation of a number of ... more In order to compensate the higher order current harmonics caused by the operation of a number of non-linear loads, the modern semiconductor converters called active power filters are used. The principle of operation of active power filter is to generate to the electrical grid a compensation current which is equal to the distortion currents in magnitude and opposite to the sign. To form the compensation current, it is necessary to perform an analysis of the harmonic stuff of the distorted current in real time. In this paper, the results of design of discrete-time harmonic stuff estimator for three-phase network are presented. Proposed estimator is based on isolation of positive and negative sequences of each harmonics and provides asymptotic estimation of mains current harmonic stuff. During this study, the current of the network has a non-sinusoidal form, and in its spectrum consists of 20 higher harmonics. It is shown that observer tuning, based on the choice of a damping factor, p...

Пересада, С. М. Метод визначення електричних параметрів явнополюсних синхронних двигунів = Identi... more Пересада, С. М. Метод визначення електричних параметрів явнополюсних синхронних двигунів = Identification method of electrical parameters of the interior permanent magnets synchronous motors / С. М. Пересада, Є. О. Ніконенко, В. С. Решетник // Зб. наук. пр. НУК. – Миколаїв : НУК, 2019. – № 2 (476). – С. 14–21.Анотація. Робота присвячена питанням розробки та дослідження нового методу визначення статичних та інкрементальних індуктивностей, а також значення магнітного потоку постійних магнітів явнополюсних синхронних двигунів із постійними магнітами при самоналаштуванні. Обґрунтовано актуальність розробки методів ідентифікації електричних параметрів явнополюсних синхронних двигунів при самоналаштуванні синхронних електроприводів. Розроблений метод ідентифікації електричних параметрів явнополюсних синхронних двигунів базується на визначенні оцінених значень потокозчеплень двигуна в замкненій системі регулювання струмів із властивостями робастності до неідеальностей інвертора. Для верифі...

NONLINEAR CONTROL OF VOLTAGE SOURCE AC-DC AND DC-DC BOOST CONVERTERS Introduction. Three-phase pu... more NONLINEAR CONTROL OF VOLTAGE SOURCE AC-DC AND DC-DC BOOST CONVERTERS Introduction. Three-phase pulse-width modulated rectifiers establish de facto a standard for the power AC-DC-AC conversion topology of industrial drives, where energy recuperation is required. They provide the bidirectional power flow with unity input power factor, low harmonic distortion of the line current and stabilization of the dc-link voltage. In autonomous systems such as electrical vehicles with battery primary power source the bidirectional DC-DC power converters are widely used to regulate the inverter DC-link voltage [1]. A number of approaches have been considered to solve the control problem of AC-DC power conversion part, which is nonlinear third order control plant. The authors of [2], [3] and others proposed the structure of vector controlled rectifier constructed in line voltage oriented reference frame using an approximate converter model and assuming a timescale separation between the voltage and current dynamics. A typical structure of control system includes an outer voltage control loop with linear PI-controller that forms the reference for inner active current control loop with P (PI)-controller. The input reactive current component is controlled by PI-controller with the zero reference value. In [4] authors proposed to use the set of switching voltage PI controllers to improve transient performance. Solution, given in [5], exploits a concept of direct power control on the base of virtual flux instead of the line voltage vector orientation. In the most commonly used advanced control schemes [1], the additional decoupling terms are added in order to achieve some sort of linearization of the initial system. A nonlinear control algorithm [6] was designed using Lyapunov's second method, it guarantees asymptotic DC-link voltage regulation as well as zero input reactive power consumption. Passivity-based control technique in [7] uses the Lyapunov's design in order to result in a stable closed-loop system. Adaptive controller [8] is constructed on the base of simplified active power model, it shows satisfactory performance during simulation and experiment. Solution given in [9] exploits the concept of direct converted energy control, it guarantees global asymptotic stability of the DC-link voltage regulation together with the stabilization of the input reactive power on zero level. However, this controller is implementable only if capacitance and inductance of converter are exactly known, since they are used in the controller equations and reference computation. As it follows from the available results the classical and advanced controllers satisfy the basic requirements for converter control systems, however no well definite solution is still proposed. Some controllers are designed, based on significant simplifying assumptions; no rigorous stability proof and experimental investigation are given. The important feature of the AC-DC converter control system is that equivalent structure of the voltage subsystem under decoupling vector control is the same as for classical DC-DC converter. Such property allows to construct the voltage subsystems of the three phase AC-DC and DC-DC converters on the base some sort of universal controller. The aim of this paper is to introduce the universal voltage controller for AC-DC and DC-DC converters based on two timescale approach and partial system feedback linearization. The experimental results demonstrate the effectiveness of the proposed control algorithm. Control algorithm design. A schematic diagram of the standard three-phase AC-DC converter in voltage supply mode is shown in the Fig. 1 [1], where standard definitions for all variables are used. The two phase model of the converter in line voltage vector oriented reference frame (d-q) is given by

Visnyk of Vinnytsia Politechnical Institute, 2021

Sensorless Speed Control of the Surface Mounted Permanent Magnet Synchronous Motors

2021 IEEE 3rd Ukraine Conference on Electrical and Computer Engineering (UKRCON), 2021

A new sensorless speed control algorithm for surface mounted permanent magnet synchronous motors ... more A new sensorless speed control algorithm for surface mounted permanent magnet synchronous motors is presented. State observer is designed for speed and position estimation, and its stability is proved using the second Lyapunov method. If vector control algorithm is used for speed control, observer can be slightly modified to achieve the controller performance that is suitable for high dynamic applications. The effectiveness of designed sensorless speed control algorithm is demonstrated by simulations.

Parameters Identification for Self-Commissioning of DC-DC Boost Converters

2021 IEEE 3rd Ukraine Conference on Electrical and Computer Engineering (UKRCON), 2021

A new algorithm for self-commissioning procedure of DC-DC boost converters is presented. It is ba... more A new algorithm for self-commissioning procedure of DC-DC boost converters is presented. It is based on closed-loop adaptive observer of the converter model in average coordinates and provides identification of parameters namely: resistance and inductance of input inductor and DC-link capacitance. The rigorous proof of stability for physical operating conditions is given based on second Lyapunov method. Simulation results show fast convergence of the estimation errors.

General Theoretical Solution of Sensorless Speed-Flux Vector Control of Induction Motor

Tekhnichna Elektrodynamika, 2016

Tekhnichna Elektrodynamika, 2022

A speed observer for field-oriented controlled induction drives is presented. The proposed soluti... more A speed observer for field-oriented controlled induction drives is presented. The proposed solution exploits the concept of the classic full-order flux observer which is adaptive to the rotor resistance variations. Due to the structural similarity of the rotor speed and active rotor resistance in motor model, the speed observer can be designed using similar structure. The observer guarantees local asymptotic estimation of the rotor fluxes, stator currents and rotor speed in all operating conditions, excluding DC stator excitation. The stability properties of the observer are studied using Lyapunov’s second method. It is experimentally shown that the observer provides an acceptable dynamics of the speed estimation if speed is slowly varying. The proposed observer is suitable for the applications with medium requirements for speed regulation performance. References 13, figures 5.

Dynamic Performances of the Shunt Active Power Filter Control System

Applied Aspects of Information Technology, 2021

Harmonic pollution of the electrical mains is well known and well-studied phenomena. Active power... more Harmonic pollution of the electrical mains is well known and well-studied phenomena. Active power filter being a powerful tool to meet the requirements of regulatory documents regulating the electricity quality. Despite this fact, practical implementation of the active power filter is still connected with significant difficulties. In particular, existing systems typically use fast Fourier transform methods or instantaneous power theory to estimate the harmonic composition of the mains current. However, the use of fast Fourier transform requires high computing power of the control system, and the implementation of the theory of instantaneous power significantly increases the requirements for the power part of the active filter. The application of another approach - selective compensation of harmonics, makes it possible to reduce computational requirements and significantly simplify the technical implementation of the active filter and at the same time to achieve an acceptable level o...

Energies

The accurate magnetic model is mandatory for high-performance control of high anisotropy synchron... more The accurate magnetic model is mandatory for high-performance control of high anisotropy synchronous machines. This paper presents a time-efficient and accurate magnetic model identification based on triangle current injection while the machine under the test is driven at a constant speed by a prime mover. The current injection pattern allows scanning the whole range of current, reducing the identification time compared to the standard constant-speed method (CSM) with the same level of accuracy. The ohmic voltage drop and inverter nonlinearities are compensated by using the average voltage of motor and generator modes. The synchronous reluctance machine is used as a case study for validation through the comparison between the experimental results obtained by the proposed method and the CSM against finite element simulation. Moreover, the temperature variation of the machine winding is measured showing no considerable changes during the identification test.

This paper develops and experimentally substantiates a new algorithm to identify unknown paramete... more This paper develops and experimentally substantiates a new algorithm to identify unknown parameters of induction motors during self-commissioning procedure. To guarantee asymptotic identification, we design an adaptive stator current controller using a stator flux observer. Allowed current references guarantee global exponential identification of three induction motor parameters as well as estimation of stator fluxes in both motionless and rotating motor operations. Overestimation of the stator fluxes is introduced to achieve global stability of parameters identification and flux estimation. An asymptotic stator current tracking is also ensured. Our experiments demonstrate that the proposed schemes guarantee identification and estimation accuracy with fast asymptotic convergence of errors to zero. The proposed procedure compliments the existing practical control schemes, and, consistent with vector controls including sensorless algorithms. References 17, figures 4.

Identification of the Interior Permanent Magnet Synchronous Motor Electrical Parameters for Self-Commissioning

2020 IEEE 40th International Conference on Electronics and Nanotechnology (ELNANO)

This paper develops a novel algorithm for interior permanent magnet synchronous motors (IPMSM) pa... more This paper develops a novel algorithm for interior permanent magnet synchronous motors (IPMSM) parameters identification for a self-commissioning procedure. The proposed algorithm is based on adaptive current controllers with robustness properties to inverter nonlinearities. It guarantees the stator resistance and inductances asymptotic estimation with permanent magnets flux if the conditions of persistency of excitation are provided. The validity of the conclusions is confirmed by the coincidence of the simulation study results with the experimental data.

Dynamics of the Synchronous Motor based Traction Electromechanical Systems with Hybrid Energy Sources

2020 IEEE Problems of Automated Electrodrive. Theory and Practice (PAEP)

The research methodology of electric vehicles electromechanical systems consisting of synchronous... more The research methodology of electric vehicles electromechanical systems consisting of synchronous electric drives and hybrid energy storages is developed. The simulation platform for investigation of the complete electromechanical system is validated on the base of separate experimental tests of the hybrid energy storage system and vector-controlled interior permanent magnet synchronous motor drive. The simulation testing results of the most spread topologies of energy storage for electric vehicles based on batteries and supercapacitors are given. The load for energy storages is calculated based on the experimental transients of a drive system. The integrals of squared battery current and its rate of change are compared to analyze the battery ageing characteristics.

Inverter Nonlinearity Effects on Self-Commissioning of Synchronous Reluctance Drives

2021 24th International Conference on Electrical Machines and Systems (ICEMS)

High-performance sensorless synchronous reluctance drives (SynRel) require self-commissioning dur... more High-performance sensorless synchronous reluctance drives (SynRel) require self-commissioning during the drive start-up to identify a magnetic model (flux maps) of the machine taking into account the saturation and the cross-saturation phenomena. Generally, the stator flux linkage is calculated based on the stator voltage integration. Inverter nonlinear voltage errors mainly caused by dead-time and on-state voltage drops deteriorate the voltage estimation that decreases the flux estimation accuracy. This paper presents a comprehensive study of inverter nonlinearity effects on flux maps identification and its compensation strategy.

2018 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles & International Transportation Electrification Conference (ESARS-ITEC)

A novel speed-flux tracking controller for induction motors has been developed and experimentally... more A novel speed-flux tracking controller for induction motors has been developed and experimentally verified. Direct rotor flux field oriented controller is designed for current-fed induction motor model on the base of full order hybrid continuous time-sliding mode flux observer. Controller guarantees local asymptotic speedflux tracking and asymptotic direct field-orientation under condition of unknown constant load torque. The flux subsystem is invariant with respect to limited rotor resistance variations due to special structure of the flux observer. The efficiency of the proposed solution is confirmed by the results of experimental studies, which demonstrate the improved robustness properties in all motor operating conditions including nearby zero speeds.

In this paper, the results of the experimental investigations of the dynamic modes of the hybrid ... more In this paper, the results of the experimental investigations of the dynamic modes of the hybrid energy storage system for electric vehicles are shown which is based on the batteries and supercapacitors. The recommendations on the formation of dynamical modes are presented. The load current is formed based on diagrams of the motor torque and speed which correspond to the movement of a typical electric vehicle. It is experimentally shown that hybrid energy storage systems with a fixed configuration of the decoupling filter improve the batteries operation conditions, comparing with the battery-only source, but cannot guarantee effective currents distribution for all dynamic modes of an electric vehicle. References 10, figures 4.

The paper presents a novel maximum torque per Ampere (MTA) controller for induction motor (IM) dr... more The paper presents a novel maximum torque per Ampere (MTA) controller for induction motor (IM) drives. The proposed controller exploits the concept of direct (observer based) field orientation and guarantees asymptotic torque tracking of smooth reference trajectories and maximizes the torque per Ampere ratio when the developed torque is constant or slowly varying. A dynamic output-feedback linearizing technique is employed for the torque subsystem design. In order to improve torque tracking accuracy a motor magnetizing curve is taken into account during MTA optimization and controller design. The achieved steady-state system efficiency have been compared experimentally for three types of controllers, namely: standard vector control with constant flux operation, controller based on classic maximization of torque per Ampere ratio for linear magnetic circuit and controller based on MTA strategy for saturated induction motor. It is shown experimentally that the controller designed for saturated induction motor provides not only higher torque per Ampere ratio but also increases power factor and reduces active power consumption hence improving the drive efficiency. Operation with slowly varying torque references has also been analysed. It is shown that the proposed controller is suitable for applications that do not demand an extremely fast dynamic response, for example for electric vehicle drives.

Tekhnichna Elektrodynamika

Torque ripple compensation problem is considered for electrical drives, based on low-cost direct ... more Torque ripple compensation problem is considered for electrical drives, based on low-cost direct drive interior perma-nent magnet synchronous motors. Robustness properties of the speed and position control systems have been studied using time scale separation properties of the current, speed and position control loops. It is shown that system closed-loop dynamics according to new controller design has cascaded properties with speed and position control loops con-nected in series and therefore has potential of high frequency torque ripple compensation by increasing controllers gains. Experimental results are presented for two motors with similar rated data but significantly different level of the torque ripple. It is shown that despite of significand difference in parasitic torque amplitude, the similar position con-trol performance can be achieved. It makes proposed control algorithms suitable for both high dynamic performance and low-cost direct drive applications with medium perfo...

Tekhnichna Elektrodynamika

A flux observer for induction motors which is adaptive to the active rotor resistance variations ... more A flux observer for induction motors which is adaptive to the active rotor resistance variations is presented. Due to the added fluxes overestimation in the observer structure, the global exponential stability properties of the current and flux vector components and active rotor resistance estimation are ensured under conditions of persistency of excitation. The proposed observer has a simpler structure compared to existing solutions with the global stability properties. The simulation results of the observer dynamic performance investigation confirm its effectiveness. It is shown that even if the conditions of persistency of excitation are not met, the active rotor resistance is estimated correctly; consequently, the designed observer can be implemented as an identification algorithm in self-commissioning systems of induction electric drives. References 9, figures 5.

Tehnìčna elektrodinamìka, Jan 31, 2024

ДИСКРЕТНИЙ СПОСТЕРІГАЧ ГАРМОНІЧНОГО СКЛАДУ СТРУМУ ТРИФАЗНОЇ МЕРЕЖІ

In order to compensate the higher order current harmonics caused by the operation of a number of ... more In order to compensate the higher order current harmonics caused by the operation of a number of non-linear loads, the modern semiconductor converters called active power filters are used. The principle of operation of active power filter is to generate to the electrical grid a compensation current which is equal to the distortion currents in magnitude and opposite to the sign. To form the compensation current, it is necessary to perform an analysis of the harmonic stuff of the distorted current in real time. In this paper, the results of design of discrete-time harmonic stuff estimator for three-phase network are presented. Proposed estimator is based on isolation of positive and negative sequences of each harmonics and provides asymptotic estimation of mains current harmonic stuff. During this study, the current of the network has a non-sinusoidal form, and in its spectrum consists of 20 higher harmonics. It is shown that observer tuning, based on the choice of a damping factor, p...

Пересада, С. М. Метод визначення електричних параметрів явнополюсних синхронних двигунів = Identi... more Пересада, С. М. Метод визначення електричних параметрів явнополюсних синхронних двигунів = Identification method of electrical parameters of the interior permanent magnets synchronous motors / С. М. Пересада, Є. О. Ніконенко, В. С. Решетник // Зб. наук. пр. НУК. – Миколаїв : НУК, 2019. – № 2 (476). – С. 14–21.Анотація. Робота присвячена питанням розробки та дослідження нового методу визначення статичних та інкрементальних індуктивностей, а також значення магнітного потоку постійних магнітів явнополюсних синхронних двигунів із постійними магнітами при самоналаштуванні. Обґрунтовано актуальність розробки методів ідентифікації електричних параметрів явнополюсних синхронних двигунів при самоналаштуванні синхронних електроприводів. Розроблений метод ідентифікації електричних параметрів явнополюсних синхронних двигунів базується на визначенні оцінених значень потокозчеплень двигуна в замкненій системі регулювання струмів із властивостями робастності до неідеальностей інвертора. Для верифі...

NONLINEAR CONTROL OF VOLTAGE SOURCE AC-DC AND DC-DC BOOST CONVERTERS Introduction. Three-phase pu... more NONLINEAR CONTROL OF VOLTAGE SOURCE AC-DC AND DC-DC BOOST CONVERTERS Introduction. Three-phase pulse-width modulated rectifiers establish de facto a standard for the power AC-DC-AC conversion topology of industrial drives, where energy recuperation is required. They provide the bidirectional power flow with unity input power factor, low harmonic distortion of the line current and stabilization of the dc-link voltage. In autonomous systems such as electrical vehicles with battery primary power source the bidirectional DC-DC power converters are widely used to regulate the inverter DC-link voltage [1]. A number of approaches have been considered to solve the control problem of AC-DC power conversion part, which is nonlinear third order control plant. The authors of [2], [3] and others proposed the structure of vector controlled rectifier constructed in line voltage oriented reference frame using an approximate converter model and assuming a timescale separation between the voltage and current dynamics. A typical structure of control system includes an outer voltage control loop with linear PI-controller that forms the reference for inner active current control loop with P (PI)-controller. The input reactive current component is controlled by PI-controller with the zero reference value. In [4] authors proposed to use the set of switching voltage PI controllers to improve transient performance. Solution, given in [5], exploits a concept of direct power control on the base of virtual flux instead of the line voltage vector orientation. In the most commonly used advanced control schemes [1], the additional decoupling terms are added in order to achieve some sort of linearization of the initial system. A nonlinear control algorithm [6] was designed using Lyapunov's second method, it guarantees asymptotic DC-link voltage regulation as well as zero input reactive power consumption. Passivity-based control technique in [7] uses the Lyapunov's design in order to result in a stable closed-loop system. Adaptive controller [8] is constructed on the base of simplified active power model, it shows satisfactory performance during simulation and experiment. Solution given in [9] exploits the concept of direct converted energy control, it guarantees global asymptotic stability of the DC-link voltage regulation together with the stabilization of the input reactive power on zero level. However, this controller is implementable only if capacitance and inductance of converter are exactly known, since they are used in the controller equations and reference computation. As it follows from the available results the classical and advanced controllers satisfy the basic requirements for converter control systems, however no well definite solution is still proposed. Some controllers are designed, based on significant simplifying assumptions; no rigorous stability proof and experimental investigation are given. The important feature of the AC-DC converter control system is that equivalent structure of the voltage subsystem under decoupling vector control is the same as for classical DC-DC converter. Such property allows to construct the voltage subsystems of the three phase AC-DC and DC-DC converters on the base some sort of universal controller. The aim of this paper is to introduce the universal voltage controller for AC-DC and DC-DC converters based on two timescale approach and partial system feedback linearization. The experimental results demonstrate the effectiveness of the proposed control algorithm. Control algorithm design. A schematic diagram of the standard three-phase AC-DC converter in voltage supply mode is shown in the Fig. 1 [1], where standard definitions for all variables are used. The two phase model of the converter in line voltage vector oriented reference frame (d-q) is given by

Visnyk of Vinnytsia Politechnical Institute, 2021

Sensorless Speed Control of the Surface Mounted Permanent Magnet Synchronous Motors

2021 IEEE 3rd Ukraine Conference on Electrical and Computer Engineering (UKRCON), 2021

A new sensorless speed control algorithm for surface mounted permanent magnet synchronous motors ... more A new sensorless speed control algorithm for surface mounted permanent magnet synchronous motors is presented. State observer is designed for speed and position estimation, and its stability is proved using the second Lyapunov method. If vector control algorithm is used for speed control, observer can be slightly modified to achieve the controller performance that is suitable for high dynamic applications. The effectiveness of designed sensorless speed control algorithm is demonstrated by simulations.

Parameters Identification for Self-Commissioning of DC-DC Boost Converters

2021 IEEE 3rd Ukraine Conference on Electrical and Computer Engineering (UKRCON), 2021

A new algorithm for self-commissioning procedure of DC-DC boost converters is presented. It is ba... more A new algorithm for self-commissioning procedure of DC-DC boost converters is presented. It is based on closed-loop adaptive observer of the converter model in average coordinates and provides identification of parameters namely: resistance and inductance of input inductor and DC-link capacitance. The rigorous proof of stability for physical operating conditions is given based on second Lyapunov method. Simulation results show fast convergence of the estimation errors.

General Theoretical Solution of Sensorless Speed-Flux Vector Control of Induction Motor

Tekhnichna Elektrodynamika, 2016

Tekhnichna Elektrodynamika, 2022

A speed observer for field-oriented controlled induction drives is presented. The proposed soluti... more A speed observer for field-oriented controlled induction drives is presented. The proposed solution exploits the concept of the classic full-order flux observer which is adaptive to the rotor resistance variations. Due to the structural similarity of the rotor speed and active rotor resistance in motor model, the speed observer can be designed using similar structure. The observer guarantees local asymptotic estimation of the rotor fluxes, stator currents and rotor speed in all operating conditions, excluding DC stator excitation. The stability properties of the observer are studied using Lyapunov’s second method. It is experimentally shown that the observer provides an acceptable dynamics of the speed estimation if speed is slowly varying. The proposed observer is suitable for the applications with medium requirements for speed regulation performance. References 13, figures 5.

Dynamic Performances of the Shunt Active Power Filter Control System

Applied Aspects of Information Technology, 2021

Harmonic pollution of the electrical mains is well known and well-studied phenomena. Active power... more Harmonic pollution of the electrical mains is well known and well-studied phenomena. Active power filter being a powerful tool to meet the requirements of regulatory documents regulating the electricity quality. Despite this fact, practical implementation of the active power filter is still connected with significant difficulties. In particular, existing systems typically use fast Fourier transform methods or instantaneous power theory to estimate the harmonic composition of the mains current. However, the use of fast Fourier transform requires high computing power of the control system, and the implementation of the theory of instantaneous power significantly increases the requirements for the power part of the active filter. The application of another approach - selective compensation of harmonics, makes it possible to reduce computational requirements and significantly simplify the technical implementation of the active filter and at the same time to achieve an acceptable level o...

Energies

The accurate magnetic model is mandatory for high-performance control of high anisotropy synchron... more The accurate magnetic model is mandatory for high-performance control of high anisotropy synchronous machines. This paper presents a time-efficient and accurate magnetic model identification based on triangle current injection while the machine under the test is driven at a constant speed by a prime mover. The current injection pattern allows scanning the whole range of current, reducing the identification time compared to the standard constant-speed method (CSM) with the same level of accuracy. The ohmic voltage drop and inverter nonlinearities are compensated by using the average voltage of motor and generator modes. The synchronous reluctance machine is used as a case study for validation through the comparison between the experimental results obtained by the proposed method and the CSM against finite element simulation. Moreover, the temperature variation of the machine winding is measured showing no considerable changes during the identification test.

This paper develops and experimentally substantiates a new algorithm to identify unknown paramete... more This paper develops and experimentally substantiates a new algorithm to identify unknown parameters of induction motors during self-commissioning procedure. To guarantee asymptotic identification, we design an adaptive stator current controller using a stator flux observer. Allowed current references guarantee global exponential identification of three induction motor parameters as well as estimation of stator fluxes in both motionless and rotating motor operations. Overestimation of the stator fluxes is introduced to achieve global stability of parameters identification and flux estimation. An asymptotic stator current tracking is also ensured. Our experiments demonstrate that the proposed schemes guarantee identification and estimation accuracy with fast asymptotic convergence of errors to zero. The proposed procedure compliments the existing practical control schemes, and, consistent with vector controls including sensorless algorithms. References 17, figures 4.

Identification of the Interior Permanent Magnet Synchronous Motor Electrical Parameters for Self-Commissioning

2020 IEEE 40th International Conference on Electronics and Nanotechnology (ELNANO)

This paper develops a novel algorithm for interior permanent magnet synchronous motors (IPMSM) pa... more This paper develops a novel algorithm for interior permanent magnet synchronous motors (IPMSM) parameters identification for a self-commissioning procedure. The proposed algorithm is based on adaptive current controllers with robustness properties to inverter nonlinearities. It guarantees the stator resistance and inductances asymptotic estimation with permanent magnets flux if the conditions of persistency of excitation are provided. The validity of the conclusions is confirmed by the coincidence of the simulation study results with the experimental data.

Dynamics of the Synchronous Motor based Traction Electromechanical Systems with Hybrid Energy Sources

2020 IEEE Problems of Automated Electrodrive. Theory and Practice (PAEP)

The research methodology of electric vehicles electromechanical systems consisting of synchronous... more The research methodology of electric vehicles electromechanical systems consisting of synchronous electric drives and hybrid energy storages is developed. The simulation platform for investigation of the complete electromechanical system is validated on the base of separate experimental tests of the hybrid energy storage system and vector-controlled interior permanent magnet synchronous motor drive. The simulation testing results of the most spread topologies of energy storage for electric vehicles based on batteries and supercapacitors are given. The load for energy storages is calculated based on the experimental transients of a drive system. The integrals of squared battery current and its rate of change are compared to analyze the battery ageing characteristics.

Inverter Nonlinearity Effects on Self-Commissioning of Synchronous Reluctance Drives

2021 24th International Conference on Electrical Machines and Systems (ICEMS)

High-performance sensorless synchronous reluctance drives (SynRel) require self-commissioning dur... more High-performance sensorless synchronous reluctance drives (SynRel) require self-commissioning during the drive start-up to identify a magnetic model (flux maps) of the machine taking into account the saturation and the cross-saturation phenomena. Generally, the stator flux linkage is calculated based on the stator voltage integration. Inverter nonlinear voltage errors mainly caused by dead-time and on-state voltage drops deteriorate the voltage estimation that decreases the flux estimation accuracy. This paper presents a comprehensive study of inverter nonlinearity effects on flux maps identification and its compensation strategy.

2018 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles & International Transportation Electrification Conference (ESARS-ITEC)

A novel speed-flux tracking controller for induction motors has been developed and experimentally... more A novel speed-flux tracking controller for induction motors has been developed and experimentally verified. Direct rotor flux field oriented controller is designed for current-fed induction motor model on the base of full order hybrid continuous time-sliding mode flux observer. Controller guarantees local asymptotic speedflux tracking and asymptotic direct field-orientation under condition of unknown constant load torque. The flux subsystem is invariant with respect to limited rotor resistance variations due to special structure of the flux observer. The efficiency of the proposed solution is confirmed by the results of experimental studies, which demonstrate the improved robustness properties in all motor operating conditions including nearby zero speeds.

In this paper, the results of the experimental investigations of the dynamic modes of the hybrid ... more In this paper, the results of the experimental investigations of the dynamic modes of the hybrid energy storage system for electric vehicles are shown which is based on the batteries and supercapacitors. The recommendations on the formation of dynamical modes are presented. The load current is formed based on diagrams of the motor torque and speed which correspond to the movement of a typical electric vehicle. It is experimentally shown that hybrid energy storage systems with a fixed configuration of the decoupling filter improve the batteries operation conditions, comparing with the battery-only source, but cannot guarantee effective currents distribution for all dynamic modes of an electric vehicle. References 10, figures 4.