Mathematical Modeling and Dynamic Simulation of a Class of Drive Systems with Permanent Magnet Synchronous Motors (original) (raw)
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Drive System with Permanent Magnet Synchronuous Motor. Simulation and tests
Proceedings of the Power Electronics, Motion Control Conference (PEMC), Prague, 1998, vol. 4., pp. 204-209
The permanent magnet synchronous motor (PMSM) can be successfully utilized in variable speed positioning drive systems due to their great standstill torque and good dynamic characteristics. The drive system using PMSM has a three leveled control unit based upon the rotor flux oriented vector control of the machine. The dynamic behavior of the PMSM driven positioning system was analyzed by simulations and tests. The simulations were performed by using the SIMULINK package. The measurements were made on a special test bench. The results obtained by the two ways are compared and they are found to be in good accordance.
IEEE Transactions on Industry Applications, 1989
The brushless dc motor has a permanent-magnet rotor, and the stator windings are wound such that the back electromotive force (EMF) is trapezoidal. It therefore requires rectangular-shaped stator phase currents to produce constant torque. The trapezoidal back EMF implies that the mutual inductance between the stator and rotor is nonsinusoidal. Theref ore, no particular advantage exists in transforming the machine equations into the well-known two-axis equations, which is done in the case of machines with sinusoidal back EMF'S. This second part of the two-part paper develops a phase variable model of the BDCM and uses it to examine the performance of a BDCM speed servo drive system when fed by hysteresis and pulsewidth-modulated (PWM) current controllers. Transients similar to those applied to the permanent-magnet synchronous motor system of Part I are applied to this drive system to allow a comparative evaluation. Particular attention is paid to the motor torque pulsations. Some experimental verification is given.
Modeling and Dynamic Simulation of Permanent Magnet Brushless DC Motor (PMBLDCM) Drives
This paper deals with modeling and dynamic simulation of PMBLDCM drives using MATLAB and its toolbox Simulink. Mathematical model of whole system which incorporates BLDC Motor, inverter, current controller and speed/torque controller is used for the proposed model of PMBLDCM drives. The current, back emf and torque equations are used to build the mathematical model of BLDC Motor. Inverter is modeled with the help of switching function concept instead of using actual switching device. PI controller is utilized for speed/torque control of PMBLDCM drives. Hysteresis controller is employed for current control of PMBLDCM drives. With the aid of the developed model, the Steady and Transient-state characteristics of speed and torque in addition to voltages and currents of inverter components can be effectively examined and analyzed. This proposed model can be projected to trouble-free design tool for the development of PMBLDCM drives.
The design of the speed controller is important from the point of view of imparting desired transient and steady-state characteristic to the speed–controlled permanent magnet synchronous motor (PMSM) drive system. The design and analysis of a vector-controlled closed-loop permanent magnet synchronous motor (PMSM) drive is presented in this paper work. The effect of different factors like the time constant of proportional speed controller and the motor time constant on drive performance is analyzed. The D-partition technique is used to investigate the interaction of proportional speed time constant, amplifier gain and armature time constant on the system stability. In this paper work, a procedure has been suggested to find the optimum value of the amplifier gain to give minimum settling time, which is the most important requirement of high performance drives or high fidelity drives. Using the D-partition technique, a comprehensive performance analysis of system design is carried out in this paper work in MATLAB environment.
IJERT-Modeling and Simulation of a Torque Controlled Permanent Magnet Synchronous Motor Drive
International Journal of Engineering Research and Technology (IJERT), 2014
https://www.ijert.org/modeling-and-simulation-of-a-torque-controlled-permanent-magnet-synchronous-motor-drive https://www.ijert.org/research/modeling-and-simulation-of-a-torque-controlled-permanent-magnet-synchronous-motor-drive-IJERTV3IS031945.pdf This paper presents the detailed modeling and simulation of a permanent magnet synchronous Motor (PMSM) drive system. The torque control of PMSM is achieved with the help of vector control, which is the widely accepted method. It provides independent control of torque and mutual flux. The switching signals for inverter are generated by two techniques to test their effect for superior performance of the drive. They are hysteresis and sinusoidal pulse width-modulation (PWM) with current control. The response of the two drives are studied by simulation and evaluated based upon the magnitude of current ripples and torque pulsation. Also the effect on Total harmonic distortion (THD) which is a measurement of harmonic distortion or harmonic components of a distorted waveform is investigated. The proposed drive is tested at various operating conditions to conclude the effect of different switching techniques on the drive system. The study is carried out with Matlab Simulink software.
High performance position control of permanent magnet synchronous drives
2017 7th International Electric Drives Production Conference (EDPC), 2017
In the design and test of electric drive control systems, computer simulations provide a useful way to verify the correctness and efficiency of various schemes and control algorithms before the final system is actually constructed, therefore, development time and associated costs are reduced. Nevertheless, the transition from the simulation stage to the actual implementation has to be as straightforward as possible. This document presents the design and implementation of a position control system for permanent magnet synchronous drives, including a review and comparison of various related works about non-linear control systems applied to this type of machine. The overall electric drive control system is simulated and tested in Proteus VSM software which is able to simulate the interaction between the firmware running on a microcontroller and analogue circuits connected to it. The dsPIC33FJ32MC204 is used as the target processor to implement the control algorithms. The electric drive model is developed using elements existing in the Proteus VSM library. As in any high performance electric drive system, field oriented control is applied to achieve accurate torque control. The complete control system is distributed in three control loops, namely torque, speed and position. A standard PID control system, and a hybrid control system based on fuzzy logic are implemented and tested. The natural variation of motor parameters, such as winding resistance and magnetic flux are also simulated. Comparisons between the two control schemes are carried out for speed and position using different error measurements, such as, integral square error, integral absolute error and root mean squared error. Comparison results show a superior performance of the hybrid fuzzy-logic-based controller when coping with parameter variations, and by reducing torque ripple, but the results are reversed when periodical torque disturbances are present. Finally, the speed controllers are implemented and evaluated physically in a testbed based on a brushless DC motor, with the control algorithms implemented on a dsPIC30F2010. The comparisons carried out for the speed controllers are consistent for both simulation and physical implementation.
Indonesian Journal of Electrical Engineering and Computer Science
On the basis of analysis of dq model of permanent magnet synchronous motor (PMSM) and principle of field oriented control (FOC), detail modelling of PMSM drive system and simulation results presented in this paper. The PMSM model is based on electronic components rather than mathematical blocks, this enabled us to achieve simulation results more realistic. Moreover all the modules of this simulation, such as inverter and pwm generator are made from scratch instead of using premade Simulink blocks. Simulation was carried on the basis of step change in speed and torque then made performance comparison of several parameters such as abc current, dq current, speed and torque.
Control Strategies and Parameter Compensation for Permanent Magnet Synchronous Motor Drives
Variable speed motor drives are being rapidly deployed for a vast range of applications in order to increase efficiency and to allow for a higher level of control over the system. One of the important areas within the field of variable speed motor drives is the system's operational boundary. Presently, the operational boundaries of variable speed motor drives are set based on the operational boundaries of single speed motors, i.e. by limiting current and power to rated values. This results in under-utilization of the system, and places the motor at risk of excessive power losses. The constant power loss (CPL) concept is introduced in this dissertation as the correct basis for setting and analyzing the operational boundary of variable speed motor drives.
International Journal of Power Electronics and Drive Systems (IJPEDS), 2016
In this paper an extensive comparative study is carried out between PI and PID controlled closed loop model of an adjustable speed Permanent Magnet Synchronous Motor (PMSM) drive. The incorporation of Sinusoidal Pulse Width Modulation (SPWM) strategy establishes near sinusoidal armature phase currents and comparatively less torque ripples without sacrificing torque/weight ratio. In this closed loop model of PMSM drive, the information about reference speed is provided to a speed controller, to ensure that actual drive speed tracks the reference speed with ideally zero steady state speed error. The entire model of PMSM closed loop drive is divided into two loops, inner loop current and outer loop speed. By taking the different combinations of two classical controllers (PI & PID) related with two loop control structure, different approximations are carried out. Hence a typical comparative study is introduced to familiar with the different performance indices of the system correspondi...