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A sinusoidal PAM‐PWM inverter
Author(s) -
Inoue Masakazu,
Taniguchi Katsunori
Publication year - 1993
Publication title -
electrical engineering in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.136
H-Index - 28
eISSN - 1520-6416
pISSN - 0424-7760
DOI - 10.1002/eej.4391130712
Subject(s) - inverter , waveform , pulse width modulation , sine wave , harmonics , modulation (music) , amplitude , power (physics) , control theory (sociology) , amplitude modulation , voltage , electronic engineering , physics , frequency modulation , electrical engineering , engineering , computer science , acoustics , optics , control (management) , quantum mechanics , artificial intelligence , radio frequency
A new strategy, using both PAM (pulse amplitude modulation) and PWM (pulsewidth modulation) in combination for a power inverter is described. The output waveforms in the proposed PAM‐PWM inverter are investigated both theoretically and experimentally. The line‐to‐line voltage waveform includes the fundamental component and the sidebands of the carrier frequency. Lower‐order harmonics are not included in the output waveform. The amplitude of the fundamental component increases 15 percent more than that of a conventional sine‐wave inverter. Since each inverter arm does not operate during two‐thirds of the period, the heat generated in the devices is reduced, i.e., the size of the inverter system can be minimized because of the reduction in the heat dissipating equipment.