Title :
Analysis and Minimization of Output Current Ripple of Multiphase PWM Inverters
Author :
Dahono, Pekik Argo
Author_Institution :
Sch. of Electr. Eng. & Informatics, Bandung Technol. Inst.
Abstract :
Analysis and minimization of output current ripple of multiphase PWM inverters are presented in this paper. The analytical expression of the rms value of output current ripple of multiphase PWM inverters as a function of the reference signal is first derived. Based on this expression, it is shown that a pure sinusoidal signal is the optimum reference signal that results in minimum output current ripple. Different to three-phase PWM inverters, injection of harmonics into the sinusoidal reference signal is neither necessary nor useful. The output current ripples of multiphase PWM inverters become unsymmetrical when third harmonic signal is injected. The rms values of output current ripple of 5-, 7-, and 9-phase PWM inverters under various reference signals are compared
Keywords :
PWM invertors; harmonics; harmonics injection; multiphase PWM inverters; output current ripple; pure sinusoidal signal; sinusoidal reference signal; third harmonic signal; three-phase PWM inverters; AC motors; Harmonic analysis; Inductance; Informatics; Pulse width modulation; Pulse width modulation inverters; Signal analysis; Switches; Tellurium; Voltage; Multiphase; PWMInverter; Ripple;
Conference_Titel :
Power Electronics Specialists Conference, 2006. PESC '06. 37th IEEE
Conference_Location :
Jeju
Print_ISBN :
0-7803-9716-9
DOI :
10.1109/PESC.2006.1712231
