Title :
PWM strategy for switching loss reduction in a high frequency link DC to AC converter
Author :
Rodrigues, Marta A. ; Da Silva, Edison R. ; Jacobina, Cursino B. ; Lima, Antônio M N
Author_Institution :
Dept. of Electr. Eng., Fed. Univ. of Paraiba, Campina Grande, Brazil
Abstract :
This paper presents a non-resonant high frequency DC to AC converter with a cycloconverter at the secondary of the transformer. The principles of a hybrid modulator previously utilized with inverters are applied to the cycloconverter together with nonresonant ZVS and ZCS techniques. A PWM pattern is introduced so that soft switching is obtained not only during the change from one switching interval to another but also within the interval. Simulated and experimental results verify the feasibility of the proposed scheme
Keywords :
DC-AC power convertors; PWM invertors; cycloconvertors; losses; power transformers; switching circuits; transformer windings; HF link DC-AC power converter; PWM pattern; PWM strategy; cycloconverter; inverters; nonresonant ZCS technique; nonresonant ZVS technique; soft switching; switching interval; switching loss reduction; transformer secondary; Analog-digital conversion; Digital modulation; Frequency conversion; Pulse width modulation; Pulse width modulation converters; Pulse width modulation inverters; Switching converters; Switching loss; Zero current switching; Zero voltage switching;
Conference_Titel :
Power Electronics Specialists Conference, 1999. PESC 99. 30th Annual IEEE
Conference_Location :
Charleston, SC
Print_ISBN :
0-7803-5421-4
DOI :
10.1109/PESC.1999.785600
