Isolated battery charger with multi-level rectifier

This paper presents an isolated battery charger which is configured by a seven-level AC-DC power converter and an isolated DC-DC power converter. The seven-level AC-DC power converter is composed of a diode rectifier and a three-port DC-DC power converter. The three-port DC-DC power converter generates a four-level voltage at the DC bus of the diode rectifier by controlling its power electronic switches. Accordingly, the voltage at the AC input terminals of the diode rectifier is an AC voltage with seven levels, and the input current is sinusoidal and in phase with the utility voltage to perform unity power factor. The inductance of the filter inductor and the capacity of the EMI filter can be reduced due to the seven-level AC voltage at the input AC terminals of the seven-level AC-DC power converter. The isolated DC-DC power converter is a two-level forward power converter to regulate the voltages of the three-port DC-DC power converter and generate an isolated output power to charge the battery set. A prototype is developed and tested to verify the performance of the isolated battery charger. The experimental results show the isolated battery charger performs as expected.

[1]  Yaow-Ming Chen,et al.  A Stepping On-Time Adjustment Method for Interleaved Multichannel PFC Converters , 2015, IEEE Transactions on Power Electronics.

[2]  Cursino B. Jacobina,et al.  Single-Phase AC-DC-AC Multilevel Five-leg Converter Based on a High-Frequency Transformer , 2014, 2021 IEEE Energy Conversion Congress and Exposition (ECCE).

[3]  Cassiano Rech,et al.  Single-stage high power factor step-up/step-down isolated AC/DC converter , 2012 .

[4]  Hadi Youssef Kanaan,et al.  PUC converter review: Topology, control and applications , 2015, IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society.

[5]  Alberto Rodriguez,et al.  On the Use of Front-End Cascode Rectifiers Based on Normally On SiC JFET and Si MOSFET , 2014, IEEE Transactions on Power Electronics.

[6]  Keith Corzine,et al.  Neutral-point balancing of neutral-pointclamped three-level inverter with a front end switched rectifier dc source for the full modulation range , 2009 .

[7]  Fernando Lessa Tofoli,et al.  Comparative study of high power factor boost rectifiers in continuous conduction mode , 2014, 2014 11th IEEE/IAS International Conference on Industry Applications.

[8]  Jung-Min Kwon,et al.  Single Power-Conversion AC--DC Converter With High Power Factor and High Efficiency , 2014, IEEE Transactions on Power Electronics.

[9]  Hani Vahedi,et al.  Single-Phase Single-Switch Vienna Rectifier as Electric Vehicle PFC Battery Charger , 2015, 2015 IEEE Vehicle Power and Propulsion Conference (VPPC).

[10]  Chuang Liu,et al.  Novel individual voltage balancing control scheme for multilevel cascade active-front-end rectifier , 2014 .

[11]  J. Melkebeek,et al.  Improved Natural Balancing With Modified Phase-Shifted PWM for Single-Leg Five-Level Flying-Capacitor Converters , 2012, IEEE Transactions on Power Electronics.

[12]  Murray Edington,et al.  Evaluation and Efficiency Comparison of Front End AC-DC Plug-in Hybrid Charger Topologies , 2012, IEEE Transactions on Smart Grid.

[13]  Kamal Al-Haddad,et al.  Small-signal modelling and linear control of a high efficiency dual boost single-phase power factor correction circuit , 2009 .

[14]  R. Naderi,et al.  Phase-Shifted Carrier PWM Technique for General Cascaded Inverters , 2008, IEEE Transactions on Power Electronics.

[15]  Liu Gang,et al.  Design-Oriented Analysis and Performance Evaluation of Buck PFC Front End , 2010, IEEE Transactions on Power Electronics.

[16]  Jung-Min Kwon,et al.  Single-stage high-power factor half-bridge flyback converter with synchronous rectifier , 2014 .

[17]  Uma Govindarajan,et al.  Power quality improvement in a low-voltage DC ceiling grid powered system , 2015 .

[18]  A. Prodic,et al.  Low-volume PFC rectifier based on non-symmetric multi-level boost converter , 2013, 2013 Twenty-Eighth Annual IEEE Applied Power Electronics Conference and Exposition (APEC).

[19]  Ires Iskender,et al.  DSP-based current sharing of average current controlled two-cell interleaved boost power factor correction converter , 2011 .

[20]  D. G. Holmes,et al.  Single-phase semi-bridge five-level flying-capacitor rectifier , 2012, 2012 IEEE Energy Conversion Congress and Exposition (ECCE).

[21]  Hirofumi Akagi,et al.  Low-Modulation-Index Operation of a Five-Level Diode-Clamped PWM Inverter With a DC-Voltage-Balancing Circuit for a Motor Drive , 2012, IEEE Transactions on Power Electronics.

[22]  Pritam Das,et al.  A ZVS Interleaved Boost AC/DC Converter Used in Plug-in Electric Vehicles , 2012, IEEE Transactions on Power Electronics.