A novel single-phase soft-switching unipolar PWM inverter

Author

Jiang, Maoh-Chin ; Wang, Wei-Shiang ; Fu, Huang-Kai ; Wu-Chang, Kuei

Author_Institution

Dept. of Electr. Eng., Nat. Ilan Univ., Yilan, Taiwan

fYear

2011

fDate

May 30 2011-June 3 2011

Firstpage

2874

Lastpage

2879

Abstract

A novel single-phase soft-switching unipolar PWM inverter (SSUPI) using a simple auxiliary resonant unit is proposed. All main switches of high-frequency arm operate at zero-voltage-switching (ZVS) turn-on, while the auxiliary switches operate at zero-current-switching (ZCS) turn-off. All main switches of low-frequency arm operate at 60 Hz to greatly reduce switching losses. As a result, commutations of the main power devices occur with low losses. Consequently, higher efficiency is achieved. Moreover, a unipolar PWM scheme is used to reduce the output voltage harmonics. Some experimental results of the proposed SSUPI, rated 500 W and operated at 40 kHz, are presented for demonstration.

Keywords

PWM invertors; commutation; harmonics suppression; resonant invertors; switches; zero current switching; zero voltage switching; SSUPI; ZCS turn-off; ZVS turn-on; auxiliary switch; high-frequency arm switch; low-frequency arm switch; output voltage harmonics; power device commutation; pulse width modulation inverter; simple auxiliary resonant unit; single-phase soft-switching unipolar PWM inverter; switching loss reduction; zero current switching turn-off; zero voltage switching turn-on; Capacitors; Inductors; Inverters; Power harmonic filters; Pulse width modulation; Switches; Zero voltage switching; soft-switching unipolar PWM inverter; zero-current-switching (ZCS); zero-voltage-switching (ZVS);

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and ECCE Asia (ICPE & ECCE), 2011 IEEE 8th International Conference on

Conference_Location

Jeju

ISSN

2150-6078

Print_ISBN

978-1-61284-958-4

Electronic_ISBN

2150-6078

Type

conf

DOI

10.1109/ICPE.2011.5944785

Filename

5944785