Title :
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
fDate :
May 30 2011-June 3 2011
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);
Conference_Titel :
Power Electronics and ECCE Asia (ICPE & ECCE), 2011 IEEE 8th International Conference on
Conference_Location :
Jeju
Print_ISBN :
978-1-61284-958-4
Electronic_ISBN :
2150-6078
DOI :
10.1109/ICPE.2011.5944785
