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2상 및 3상 변조된 각상별 랜덤 펄스위치 펄스폭 변조기법의 성능비교
위석오(Seog-Oh Wi),임영철(Yung-Cheol Lim),정영국(Young-Gook Jung),나석환(Seok-Hwan Na) 전력전자학회 2002 전력전자학술대회 논문집 Vol.- No.-
In this paper, a comparative study on the performance of two-phase and three-phase randonuzed pulse position PWM scheme for mitigation of audible switching acoustic noise in motor drives is done in the randomized pulse position PWM, each of two-phase or three-phase PWM pulses is located randomly in each switching interval. Simulation and experimental efforts were executed to investigate the spread effects of power spectra of inverter output voltage, waveforms of ripple current and audible switching acoustic noise.
새로운 3상 랜덤 펄스 위치 PWM기법에 의한 EPLD기반의 모터 속도제어 시스템
김회근(Hoe-Geun Kim),위석오(Seog-Oh Wi),임영철(Young-Cheol Lim),정영국(Young-Gook Jung),나석환(Seok-Hwan Na) 전력전자학회 2002 전력전자학술대회 논문집 Vol.- No.-
In tins paper, EPLD(Erasable Programmable Logic Device) based induction motor drives with a SRP-PWM(Separatley Randomized Pulse Position PWM) is proposed in the proposed RPWM (Random PWM), each of three phase pulses is located randomly in each switching interval. Based on the space vector modulation technique, the duty ratio of the pulses is calculated. To verify the validity of the proposed RPWM, the experimental study was tried Along With the randomization of PWM pulses, the space vector modulation is also executed in the TMS32OC31 DSP(Digital Signal Processor) The experimental results show that the voltage and switching noise harmonics are spread to a Wide band area Also, the performance of the proposed SRP- PWM and the conventional SVM-PWM are nearly the same from the viewpoint of the v/f constant control