Title :
A PWM method for reduction of switching loss in a full-bridge inverter
Author :
Lai, R.S. ; Ngo, K.D.T.
Author_Institution :
Dept. of Electr. Eng., Florida Univ., Gainesville, FL, USA
Abstract :
This paper presents the hybrid pulsewidth modulation (HPWM) method which requires only two of the four switches in a full-bridge inverter to be pulsewidth-modulated at high frequency, thus effectively reducing the switching loss by a factor of two. For triangular carriers, the HPWM frequency spectrum is identical to the conventional unipolar PWM (UPWM) spectrum. A low-frequency model for a fast-switching HPWM full-bridge inverter with high-quality output is described, and is substantiated by experimental data
Keywords :
bridge circuits; invertors; losses; pulse width modulation; switching circuits; frequency spectrum; full-bridge inverter; high frequency; high-quality output; hybrid pulsewidth modulation method; switching loss reduction; triangular carriers; unipolar PWM spectrum; Active filters; Amplitude modulation; Frequency modulation; Power harmonic filters; Pulse width modulation; Pulse width modulation inverters; Switches; Switching frequency; Switching loss; Voltage;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 1994. APEC '94. Conference Proceedings 1994., Ninth Annual
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-1456-5
DOI :
10.1109/APEC.1994.316410
