지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 발행연도
- 2011.5
- 수록면
- 2,274 - 2,281 (8page)
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초록· 키워드
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This paper presents an improved variable band hysteresis current controller for a two level three phase voltage source inverter. The controller takes the average voltages of the phase-leg switched outputs as an approximation to the load back-EMFs, and uses this result to vary the hysteresis bands to maintain constant phase leg switching frequencies. The switching frequency control process is then further refined by fine tuning the hysteresis band variations to synchronise the zero crossings of the phase leg current errors with a fixed reference clock, to ensure nearest space vector switching and hence achieve the best possible harmonic switching performance. Finally, a technique is proposed to replace the third phase leg current regulator with a fixed frequency open loop PWM modulator, where its commanded reference is generated from the average switched output voltage of the other two phases. This avoids the hazard of three independent current regulators in a conventional system adversely interacting as an over constrained control problem, and allows the linear modulation range to be increased by adding a common mode third harmonic component to the third phase leg reference command.
목차
Abstract
Ⅰ. INTRODUCTION
Ⅱ. VARIABLE HYSTERESIS BAND CONTROL TO ACHIEVE CONSTANT SWITCHING FREQUENCY
Ⅲ. IMPROVED VARIABLE HYSTERESIS BAND CURRENT REGULATION
Ⅳ. CURRENT ERROR ZERO CROSSING-SYNCHRONISATION TO A FIXED REFERENCE CLOCK
Ⅴ. IMPLEMENTATION IN A THREE PHASE SYSTEM
Ⅵ. IMPLEMENTATION USING TWO HYSTERESIS CONTROLLERS
Ⅶ. CONCLUSION
REFERENCES
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UCI(KEPA) : I410-ECN-0101-2013-560-000301960