Title :
A novel single-phase soft-switching AC chopper without auxiliary switches
Author :
Wang, Chien-Ming ; Su, Ching-Hung ; Lin, Chang-Hua ; Chang, Shih-Yuan
Author_Institution :
Dept. of Electr. Eng., Nat. Ilan Univ., Ilan
Abstract :
A single-phase soft-switched series-resonant ac chopper without auxiliary switches is presented. The presented single-phase ac chopper is configured by a series-resonant conversion without cycloconversion and auxiliary switches. The presented single-phase ac chopper is a series resonator with four main switches to configure adaptively the resonant voltage robes. The output sinusoidal voltage is synthesized by a series of sinusoidal amplitude Quasi-Sinusoidal Pulses (QSPs) following the input voltage amplitude. The presented single-phase ac chopper is operated by frequency modulation with a constant-on time control. Waveform syntheses for the output sinusoidal voltage are clearly derived. A typical design example of a 600 W single-phase soft-switching ac chopper is examined to assess the system performance. The power efficiency is over 92% when the output power is at maximum output rated power. The Total Harmonic Distortion (THD) when the output power is at maximum output rated power is within 5%.
Keywords :
choppers (circuits); harmonic distortion; resonant power convertors; switching convertors; frequency modulation; output sinusoidal voltage; resonant voltage robes; series resonator; series-resonant ac chopper; series-resonant conversion; single-phase ac chopper; sinusoidal amplitude quasisinusoidal pulses; soft-switching ac chopper; total harmonic distortion; waveform syntheses; Choppers; Chromium; Circuit synthesis; Frequency modulation; Power generation; Resonance; Signal synthesis; Switches; Switching circuits; Voltage;
Conference_Titel :
Industrial Electronics and Applications, 2009. ICIEA 2009. 4th IEEE Conference on
Conference_Location :
Xi´an
Print_ISBN :
978-1-4244-2799-4
Electronic_ISBN :
978-1-4244-2800-7
DOI :
10.1109/ICIEA.2009.5138749