scholarly journals LLC Resonant Tank based Converter for EV Charging Application

2020 ◽  
Vol 9 (3) ◽  
pp. 4063-4066
Keyword(s):  
Power Factor ◽  
High Frequency ◽  
Output Voltage ◽  
Battery Life ◽  
Cuk Converter ◽  
Discontinuous Mode ◽  
Power Factor Improvement ◽  
Current Ripples ◽  
Ev Charging ◽  
Frequency Current

The aim of the article is to maximize the battery life using LLC resonant tank. LLC tank designing methodology and also the practical designing examination is introduced in LLC multi converter. Designed dc- dc converter increases the battery life by eliminating low and high frequency current ripples. In addition, bridgeless cuk converter is used for power factor improvement. To achieve the better power factor and to reduce the conduction losses the cuk converter is aimed to function in discontinuous mode of conduction (DCM). DC output voltage ranging 42-24 V for 650 W is obtained from the modelling for battery charging application.

Supply Power Factor Improvement in Ozone Generator System Using Active Power Factor Correction Converter

2015 ◽  
Vol 6 (2) ◽  
pp. 326 ◽  
Author(s):  
G. Udhayakumar ◽  
Rashmi M R ◽  
K. Patel ◽  
G.P. Ramesh ◽  
Suresh A
Keyword(s):  
High Voltage ◽  
Power Factor ◽  
High Frequency ◽  
Active Power ◽  
Ozone Generator ◽  
Generator System ◽  
Current Harmonics ◽  
Pwm Inverter ◽  
Sinusoidal Current ◽  
Power Factor Improvement

<p>Artificial Ozone Generating system needs High Voltage, High Frequency supply. The Ozonator distorts the supply currents and henceforth affect the supply power factor. This paper presents the performance comparison of PWM inverter to Power Factor Corrected (PFC) converter with PWM inverter based High-voltage High-frequency power supply for ozone generator system. The conventional inverter has front end bridge rectifier with smoothing capacitor. It draws non-sinusoidal current from ac mains; as a result input supply has more harmonics and poor power factor. Hence, there is a continuous need for power factor improvement and reduction of line current harmonics.  The proposed system has active power factor correction converter which is used to achieve sinusoidal current and improve the supply power factor. The active PFC converter with PWM inverter fed ozone generator generates more ozone output compared to the conventional inverter. Thus the proposed system has less current harmonics and better input power factor compared to the conventional system.  The performance of the both inverters are compared and analyzed with the help of simulation results presented in this paper.</p>

scholarly journals Generalized Circuit Averaging Technique for Two-Switch PWM DC-DC Converters in CCM

Electronics ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 392
Author(s):  
Sumukh Surya ◽  
Sheldon Williamson
Keyword(s):  
Output Voltage ◽  
Supply Voltage ◽  
Vital Role ◽  
Open Loop ◽  
Equivalent Series Resistance ◽  
Cuk Converter ◽  
Gain Margin ◽  
In Series ◽  
Ev Charging ◽  
Conduction Mode

Design of DC-DC converters like Cuk and SEPIC, which are fourth-order converters, play a vital role in the design of electric vehicle (EV) charging systems and drivers for LED. These converters possess a unique feature of input current being continuous due to the presence of an inductor in series with the supply voltage. In the present work, a generalized approach for obtaining the frequency response of the transfer function of the duty cycle to output voltage (Gvd) for converters operating in continuous conduction mode (CCM) having two switches is proposed. A practical Cuk converter and SEPIC operating in CCM were selected and their analyses in open loop were studied using the LTSpice simulation tool. The behavior of the output voltage and inductor currents under variable ESR’s (equivalent series resistance) of inductors was studied. It was observed that Gvd of these converters was unstable. Hence, an appropriate controller to stabilize the system and achieve a proper gain margin and phase margin in closed-loop operation is required.

scholarly journals Dynamic analysis of the high-power factor three-phase AC to DC converter using current injection hybrid resonant Technique

2019 ◽  
Vol 10 (1) ◽  
pp. 538
Author(s):  
Rahimi Baharom ◽  
Mohammad Nawawi Seroji
Keyword(s):  
Dynamic Analysis ◽  
Power Factor ◽  
High Power ◽  
High Frequency ◽  
Output Voltage ◽  
Current Injection ◽  
Line Frequency ◽  
Line Current ◽  
High Power Factor ◽  
Three Phase

<span lang="EN-US">This paper presents the dynamic analysis of the high-power factor three-phase ac to dc converter using current injection hybrid resonant technique in order to investigate the characteristics of the output voltage, line current, DC-link voltage and the resonant current of the proposed converter. The dynamic analysis have been developed based on a separate analysis of the rectifier line-frequency operation and at the resonant circuit high-frequency. Converter circuit analysis have been performed based on the operation at the fundamental frequency. The power balance relation method has been included in order to match the line frequency equation with the high frequency resonant stage equation. This analysis can be envisaged to be the heart of the small-signal model to design the output voltage regulation and maintain a high-power factor input line current of the proposed converter.</span>

scholarly journals Voltage tracking of bridgeless PFC cuk converter using PI controller

2020 ◽  
Vol 11 (1) ◽  
pp. 367
Author(s):  
W. M. Utomo ◽  
N. A. A. Isa ◽  
A. A. Bakar ◽  
A. F. H. A. Gani ◽  
B. E. Prasetyo ◽  
...  
Keyword(s):  
Steady State ◽  
Power Factor ◽  
Output Voltage ◽  
Pi Controller ◽  
Step Response ◽  
Pi Control ◽  
Control Voltage ◽  
Cuk Converter ◽  
Proportional Integral ◽  
Simulation Results

This paper proposes a Proportional-Integral (PI) control voltage tracking of Bridgeless Power Factor Correction (BPFC) Cuk converter.  In order to investigate the behaviour of different output voltages during overshoot, steady state and step response, P.I controller is designed to set the -42 V, -48 V, -54 V output voltages. The simulation results show that the proposed PI controller able to control the output voltage and achieve fast steady state and step response of BPFC Cuk converter.  When the value of output voltage increase, the overshoot voltage will become higher but the steady state respond will be faster. Furthermore, BPFC Cuk converter with P.I controller have low output voltage ripples.

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