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[전력전자, Power Electronics]Implementation of a DPS Controlled Random Switching Frequency PWM Inverter for Industrial Drives.

등록일 2004.06.14 파일확장자압축파일 (alz) | 18페이지 | 가격 29,900원

소개글

영문판 파워포인트로 작성된 이 논문의 제목은 "lmplementation of a DPS Controlled Random Switching Frequency PWM Inverter for Industrial Drives." 2002년 대한전기학회 산하인 [ICEE`02] 전력전자부문에서 발표되었던 Random PWM에 관한 필수 논문으로써 RPWM관련 또는 유사한 연구를 하시는분에게는 매우 유익한 자료가 될것입니다.

목차

I. Introduction
II. Carrier Frequency Modulated RPWM
III. Implementation
IV. Experimental Results
V. Conclusions

본문내용

***Induction***

PWM switching invokes
harmonics in voltage and current wave
mechanical vibration
acoustic noise
EMI(Electro Magnetic Interference)


***Studies on PWM up to NOW***

Aims
reduce harmonic loss
reduce torque ripple
make good shaped waveforms(sinusoidal)
PWM strategics
SHE(selected harmonic elimination)
optimal PWM

***Random PWM***
A new method to avoid fixed frequency switching
Effects of random PWM
spread the voltage and current spectra
reduce the discrete harmonic components
minimize the EMI
spread the acoustic tonal noise -> makes less annoying sound

***Carrier frequency modulated random PWM in this study***
Carrier frequency in each switching interval is changed randomly.
Uniformly distributed random number generator is implemented by DSP.
A real real-time random PWM which can change the switching frequency band while the motor is running .

참고 자료

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