An IPT Battery Charger With Near Unity Power Factor and Load-Independent Constant Output Combating Design Constraints of Input Voltage and Transformer Parameters

2019 ◽  
Vol 34 (8) ◽  
pp. 7719-7727 ◽  
Author(s):  
Xiaohui Qu ◽  
Haijun Chu ◽  
Siu-Chung Wong ◽  
Chi K. Tse
Keyword(s):  
Power Factor ◽  
Input Voltage ◽  
Battery Charger ◽  
Unity Power Factor ◽  
Design Constraints ◽  
Independent Constant ◽  
Constant Output

scholarly journals A Novel Design of Electric Vehicle Battery Charger using Modified Bridgeless Landsman Converter

2020 ◽  
pp. 20-23
Author(s):  
Pradeep Katta ◽  
Mohammed Ovaiz A ◽  
Prabaakaran K ◽  
Priya M ◽  
Keerthana K ◽  
...  
Keyword(s):  
Electric Vehicle ◽  
Power Factor ◽  
Current Mode ◽  
Input Voltage ◽  
Constant Current ◽  
Battery Charger ◽  
Unity Power Factor ◽  
Electric Vehicle Battery ◽  
Power Factor Improvement ◽  
Novel Design

This paper includes the design and implementation of a new electric vehicle charger, which is powered using a battery consisting of an enhanced power factor frontend. The traditional diode that is at the source end is omitted in the proposed design using the conventional power factor improvement inverter. The inverter has its parameters closer to the configuration of a basic push pull converter. The above-mentioned converter works with the phenomenon of electric vehicle battery control. Two modes of operation are incorporated out of which the former one is constant current mode and the latter is constant voltage mode. To obtain the desired regulation of DC voltage at the point of coupling and also to improve the operational efficiency to unity power factor, the proposed Landsman converter is operated using a single sensed individual. This method yields improved power quality, less harmonics in comparison with a conventional one. A prototype is constructed and tested by charging a 48V electric vehicle battery of 100Ah size under the transients in input voltage to display the proposed charger to an IEC61000-32 standard. All the cases are said to be satisfied by performance of the charger.

scholarly journals Modelling of three phase SVPWM AC-AC converter using unity power factor control

2019 ◽  
Vol 10 (4) ◽  
pp. 1823
Author(s):  
Saidah Saidah ◽  
Hari Sutiksno ◽  
Bambang Purwahyudi ◽  
Taufik Taufik
Keyword(s):  
Power Factor ◽  
Pulse Width Modulation ◽  
High Efficiency ◽  
Input Voltage ◽  
Input Power ◽  
Current Waveform ◽  
Unity Power Factor ◽  
Dc Voltage ◽  
Three Phase ◽  
Power Factor Control

This paper introduces the modelling of a novel three phase AC-AC converter with indirect use of a capacitor as DC voltage link. The proposed converter has high efficiency because it uses Space Vector PWM (SVPWM) technique at both rectificier and inverter stages to operate the pulse width modulation in IGBT switches. The novel converter is equipped with a power factor control to shape the rectifier input current waveform to be sinusoidal and to be in phase with the input voltage. To keep the DC voltage stable, the converter utilizes PI controllers. Simulations are conducted for output voltage from 120 to 300 Volts with output frequency ranging from 30 Hz to 60 Hz. The simulation results show that the converter is able to maintain stable the DC voltage and current. Furthermore, the model demonstrates the benefits of proposed converter in terms of acquiring high input power factor and sinusoidal current waveform at the output side of the inverter.

scholarly journals Comparison of Different Control Techniques for Interleaved DC-DC Converter

2018 ◽  
Vol 9 (2) ◽  
pp. 641 ◽  
Author(s):  
M. Kavitha ◽  
V. Sivachidambaranathan
Keyword(s):  
Fuzzy Logic ◽  
Output Voltage ◽  
Fuzzy Logic Controller ◽  
Input Voltage ◽  
Main Issue ◽  
Battery Charger ◽  
Matlab Simulink ◽  
Control Techniques ◽  
Constant Output ◽  
Simulation Results

<p>Interleaved DC-DC converter with coupled inductor is used in standalone Photovoltaic, battery charger/discharger application. The main issue of the Interleaved DC-DC converter is that, it does not provide constant output voltage for a change in input voltage. Therefore, the converter efficiency is reduced. Hence to overcome this drawback, proper controller has to be used. In this paper, different control techniques such as PI, PID and Fuzzy logic controller are used. The simulation results of all three controllers were done using MATLAB/Simulink and compared. Fuzzy logic controller provides better regulated output voltage with less settling time of 0.04sec.</p>

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