scholarly journals Study of 3.3 MW voltage-source active rectifier

2016 ◽  
Author(s):  
Vojtech Blahnik ◽  
Jakub Talla
Keyword(s):  
Voltage Source ◽  
Active Rectifier

scholarly journals Asymmetric snubberless current-fed full-bridge isolated DC-DC converters

2018 ◽  
Vol 14 (1) ◽  
pp. 5-11 ◽  
Author(s):  
Roman Kosenko ◽  
Andrei Blinov ◽  
Dmitri Vinnikov ◽  
Andrii Chub
Keyword(s):  
Low Voltage ◽  
Operating Conditions ◽  
Voltage Source ◽  
Resonant Circuit ◽  
Dc Microgrid ◽  
Leakage Inductance ◽  
Active Rectifier ◽  
Shift Control ◽  
Steady State Operation ◽  
Wide Range

Abstract This paper presents two isolated current-fed fullbridge DC-DC converters that can be used to interface a lower voltage source into a DC bus of higher voltage. The first topology uses a resonant circuit to force current redistribution between low-voltage-side transistors and a passive rectifier. The second topology utilizes an active rectifier with secondary modulation to achieve the same goal. The resonant circuit can be formed by using transformer leakage inductance and the parasitic capacitances of the switches. The converters feature soft switching of semiconductors over a wide range of operating conditions. This is achieved with decreased energy circulation when compared to existing topologies with symmetric control and with fewer semiconductors than in those with phase-shift control. The topologies can be implemented in renewable, supercapacitor, battery, fuel cell, and DC microgrid applications. Steady-state operation and design aspects of the converters are presented and verified experimentally with 400 W prototypes

scholarly journals Advanced Control Strategy for Single–Phase Voltage–Source Active Rectifier with Low Harmonic Emission

2014 ◽  
Vol 65 (2) ◽  
pp. 121-124 ◽  
Author(s):  
Vojtĕch Blahník ◽  
Zdenĕk Peroutka ◽  
Jakub Talla
Keyword(s):  
Control Strategy ◽  
Single Phase ◽  
Supply Voltage ◽  
Low Frequency ◽  
Voltage Source ◽  
Phase Voltage ◽  
Active Rectifier ◽  
Advanced Control ◽  
Pr Controller ◽  
Frequency Harmonic

Abstract This paper introduces the advanced control of single-phase voltage-source active rectifier. This control provide direct control of trolley-wire current and active damping of low-frequency disturbances at the converter ac side. Our proposed control strategy combines PR controller with feed-forward model and low-frequency harmonic compensator based on resonant controllers. Achieved experimental results show excellent converter behavior, where converter is fed by strongly distorted supply voltage.

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