A Novel Variable Width PWM Switching Based Buck Converter to Control Power Factor Correction Phenomenon for an Efficacious Grid Integrated Electric Vehicle Battery Charger (original) (raw)
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IRJET, 2022
environmental effects. Hence, Electric vehicle comes into a picture, because they runs on no or very less fuel. This vehicle totally runs on battery, so battery charger system should be fast and work effectively. So, here in our paper we have use boost converter to charge our battery. Along with this we have also used rectifier circuit, CT, PT, micro-controller. We used boost converter because it is chip and boost output voltage that's why efficiency of battery charger increases. Here, we try to maintain power factor at AC side near to unity that's why losses in system decreases and ultimately efficiency increases. Simulation in the paper shows the practical output of our topic, which is nearly unity and output waveform is almost ripple free. So, we get almost DC wave for battery charging.
Design and Simulation of PFC based CUK Converter for Electric Vehicles Battery Charger
SAMRIDDHI : A Journal of Physical Sciences, Engineering and Technology
This paper describes a battery charger for plugin electric vehicles based on power factor conversion and CUK converter in the design of electric vehicles.. The integrated battery charger is supplied from the conventional three-phase inverter for electric vehicle, which is a power factor-correcting buck boost converter. The PFC controller changes battery voltage and monitors the converter's power supply to achieve a fast and high output unit power factor. The proposed power factor controlling which is alternative to the relationship between the input voltage rectified and the battery voltage. Simulation has been used to assess the practicality and efficiency of the battery charger of the proposed converter topology.
IRJET, 2020
Nowadays, the grid interference is increasing. To overcome this problem, a power factor correction (PFC) controller circuit is used for electric vehicle (EV) wireless charging system. The working of PFC controller is based on buck-boost converter topology. This converter work either in buck mode or boost mode based on the rectified DC voltage at the input side and load voltage at the output side. This paper describes how the power factor close to unity can be obtained with line frequency current control arrangement. The goal is achieved through the power factor controller circuit working in continuous conduction mode of converter. The process is modeled using the MATLAB Simulink model of closed-loop operation.
Inverse sinusoidal pulse width modulation switched electric vehicles' battery charger
International Journal of Electrical and Computer Engineering (IJECE), 2019
This paper presents an efficient, cost-effective and sustainable grid-connected electric vehicles' (EVs') battery charger based on a buck converter to reduce the harmonics injected into the mains power line. To utilize the switching converter as an effective power factor controller (PFC), inverse sinusoidal pulse width modulation (ISPWM) signals are applied. However, a mathematical relationship between the sending-end power factor and the duty ratio of the switching buck converter is derived. To ensure the sustenance of the proposed method, a simulation model of the battery charging system is tested in PSIM simulation platform. The simulation results yield to a loss-less charging system with a sending-end power factor close to unity. An experimental testbed comprising a 60 V battery bank of 100 A-h capacity with a charging current of 7 A is developed. The laboratory assessments present an 88.1% efficient charging prototype with a resultant sending-end power factor of 0.89. The laboratory framework concerns with the comparative analysis of the sending-end power factor, system efficiency , and mains line current total harmonic distortion (THD) obtained for different charging methods-simple battery charger, fixed duty ratio controlled buck converter and the proposed topology. The performance evaluations corroborate the reliability of the presented work.
A Modified PFC Rectifier Based EV Charger Employing CC/CV Mode of Charging
IFAC-PapersOnLine, 2020
Automobile industry has displayed an inclination towards Electric Vehicles (EVs). However, EVs charging throws inevitable challenges due to inclusion of non-linear charger circuitry. The conventionally utilized AC-DC rectification in charger poses ruinous effects to Grid and EV structure in the form of harmonics interference and obnoxious spikes in current. Thus, repercussions of elevated THD can be witnessed in poor efficiency and deterioration of EV charger. Furthermore, harmonics in input inductor current produce harmonics in rectifier's output voltage. This can lead to DC link voltage fluctuation and adversely affect DC/DC converter functioning. Henceforth, a Power Factor Correction (PFC) rectifier based charger has been proposed that eliminates unwanted harmonics from input current and reduces THD. Moreover, harmonics in rectifier's output voltage are reduced and constant DC link voltage is obtained. Sinusoidal input current is maintained through Critical Conduction Mode (CrCM) and hysteresis current control application. These are achieved using inner current and outer voltage control loop method. The former produces sinusoidal current wave in phase with input voltage to improve power factor. Whereas, latter helps in achieving constant DC link voltage. Hence, THD factor of 1.30% and power factor of 0.9998 are recorded. In addition, model inculcates CC/CV charging algorithm to control overcharging of battery. Here, battery charges at Constant Current (CC) initially. Once, maximum voltage is reached, charging occurs at Constant Voltage (CV). It is governed by two isolated PI controllers. The collaborated work of PFC and CC/CV helps in recording model's efficiency of 96.8%. Furthermore, a 2 kW charger prototype is analysed using real time simulation and validated through Hardware-in-loop (HIL) in OPAL-RT.
Elektronika ir Elektrotechnika, 2019
A dynamic voltage compensator (DVC) technique is presented for the minimizing of the capacitance value of the interleaved power factor corrected (PFC) boost converter for the battery charger in electric vehicles. This technique is based on eliminating the ripple on the capacitor by creating a voltage in the opposite direction as well as the amount of ripple on the capacitor. With the proposed method, the capacitance value is reduced by approximately five times. Reducing the size of the capacitor also provides the use of film-capacitors with a longer life. The other contribution of this study is designing a faster and more stable fully-digital control system, instead of the commonly used analogue controller of interleaved PFC boost converter. A 3.3 kW interleaved PFC boost converter is designed to verify the effect of the designed dynamic voltage compensator and digital controller.
Single-Phase PFC Converter for Plug-in Hybrid Electric Vehicle Battery Chargers
International Journal of Power Electronics and Drive Systems (IJPEDS), 2012
In this paper, a front end ac-dc power factor correction topology is proposed for plug-in hybrid electric vehicle (PHEV) battery charging. The topology can achieve improved power quality, in terms of power factor correction, reduced total harmonic distortion at input ac mains, and precisely regulated dc output. Within this context, this paper introduces a boost converter topology for implementing digital power factor correction based on low cost digital signal controller that operates the converter in continuous conduction mode, thereby significantly reducing input current harmonics. The theoretical analysis of the proposed converter is then developed, while an experimental digital control system is used to implement the new control strategy. A detailed converter operation, analysis and control strategy are presented along with simulation and experimental results for universal ac input voltage (100-240V) to 380V dc output at up to 3.0 kW load and a power factor greater than 0.98. Experimental results show the advantages and flexibilities of the new control method for plug-in hybrid electric vehicle (PHEV) battery charging application.
IJERT-Efficient PFC with Switched Inductor DC-DC Converter for Battery Charging Application
International Journal of Engineering Research and Technology (IJERT), 2019
https://www.ijert.org/Efficient-PFC-with-Switched-Inductor-DC-DC-Converter-for-Battery-Charging-Application https://www.ijert.org/research/efficient-pfc-with-switched-inductor-dc-dc-converter-for-battery-charging-application-IJERTCONV7IS02042.pdf DC:-DC converter performances have been proved to be solution for battery charging applications.Most of the two-stage converters for electric bike battery charging comprise of a boost converter for power factor correction (PFC) followed by a dc-dc converter with universal input voltage. These two-stage conversions suffer from poor efficiency and increased component count. In this project, The single ended cuk converter has been replaced by SEPIC converter to overcome the problem associated with DC-DC converter. The problem associated with DC converter such as high amount of ripple, create harmonics, invert the voltage, create overheating and effective efficiency can be minimized and achieved best efficiency by SEPIC converters.It is focused on design, comparison of DC-DC with the SEPIC converter as using closed loop feedback control. In comparison DC-DC converter to SEPIC converter, single-stage switched inductor SEPIC converter based PFC converter is proposed, which offers high step-down gain, low current stress, high efficiency, and reduced component count. The operational analysis and design equations for various components of the proposed converter are carried out in continuous current mode. This project presents simulation, and experimentation on the proposed converter rated output for 48V. Furthermore, the dynamic performance of the proposed converter with battery charging is investigated in Constant Voltage mode and Constant Current mode with respect to the wide range of supply variations.
Integrated buck and boost converter for a universal battery charger of an Electric Vehicle
E3S Web of Conferences, 2021
A two-stage converter connects the input grid voltage to a pack of batteries with the voltage varying between 48-400 V, depending on the size and the range of the vehicle, with battery-operated electric and Plug-in Hybrid Electric Vehicles (PHEVs). This article offers a unique built-in converter that can interface with both high voltage (HV) and low voltage (LV) batteries. For all car architectures a universal charger that can accommodate this wide range of battery pack voltages is suitable. The novel integrated buck and boost converter (IBBC) is the proposed converter supplied using AC-DC driver at the front end mode. The main objective of this paper is to show a universal battery charger for an EV with a high power factor (PFC) and a small total harmonic distortion (THD) in addition to the high power density. A PFC converter is formed without any auxiliary circuit to balance the output voltage dependence of the battery against fluctuations in the ac grid input voltage, which in tu...