Title :
A novel three-phase three-level ZVZCS DC-DC converter using phase-shift PWM strategy
Author :
Kongwirat, Thammachat ; Jangwanitlert, Anuwat
Author_Institution :
Dept. of Electr. Eng., King Mongkut´s Inst. of Technol. Ladkrabang, Bangkok, Thailand
Abstract :
A 3-Phase 3-Level DC-DC Converter is used for high electric applications. In this paper, all power semiconductor switches are operated under Soft-Switching conditions. The outer-switches are operated within ZVS conditions by using charge transfer through flying capacitors, while the innerswitches are operated within ZVZCS conditions by using leakage inductances and blocking capacitors. Also, this paper describes the operation modes under ZVS and ZCS conditions. In addition, the simulation and experimental results are compared. The practical test is at 5.5 kW rated power and efficiency of 93.40%.
Keywords :
DC-DC power convertors; PWM power convertors; charge exchange; power semiconductor switches; switching convertors; zero current switching; zero voltage switching; blocking capacitors; charge transfer; flying capacitors; phase-shift PWM strategy; power 5.5 kW; power semiconductor switches; three-phase three-level ZVZCS DC-DC converter; zero voltage zero current switching; Capacitors; Charge transfer; Power systems; Pulse width modulation; Switches; Zero current switching; Zero voltage switching; 3-Phase 3-Level; Blocking capacitors; Soft-Switching;
Conference_Titel :
Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON), 2014 11th International Conference on
Conference_Location :
Nakhon Ratchasima
DOI :
10.1109/ECTICon.2014.6839733
