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자료유형
학술저널
저자정보
이승용 (서호전기) 윤덕용 (공주대학교)
저널정보
대한전기학회 전기학회논문지 전기학회논문지 제68권 제2호
발행연도
2019.2
수록면
285 - 295 (11page)
DOI
10.5370/KIEE.2019.68.2.285

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이 논문의 연구 히스토리 (5)

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In this paper, we have studied the PWM techniques for operating inverter for PMSM with 150-degree conduction method. In the conventional upper switch PWM technique, only three upper switches perform PWM switching, so they are very much used and have a large switching loss compared to three lower switches. And torque ripple occurs due to circulating current flowing by difference of back-EMF generated between two stator windings of motor in PWM switching section of inverter where one upper switch for PWM switching is turned off and two lower switches are turned on when motor operate in high speed and at light load. So, we propose a six-switch asymmetrical discontinuous PWM(SADPWM) techniques in order to improve the disadvantages of upper switch PWM technique. The proposed PWM technique can be used as SADPWM1 and SADPWM2 technique by changing the order of PWM switching sections.
Computer simulations and experiments were carried out for SPMSM of 750[W] class. Using proposed PWM technique, upper and lower switches have the same PWM switching operation. And circulating current did not flow in stator winding of motor under operating condition in which motor operate at high speed 3000[rpm] and at light load. In addition, it is confirmed that loss of switching elements in inverter is reduced at light load and torque ripple of motor does not occur. Also, in SADPWM2 technique freewheeling current does not flow in the non-conduction section and less operation loss results in comparison to SADPWM1 technique. Because proposed PWM technique can be realized only by software modification in conventional upper switch PWM technique, it can be widely used in applications using 120-degree conduction method. Also, it can be applied to inverter for BLDCM.

목차

Abstract
1. 서론
2. 영구자석형 동기전동기를 구동하기 위한 150도 통전 방식에서의 상전환 방법
3. 150도 통전 방식을 위한 새로운 PWM 기법
4. 시뮬레이션 및 실험 결과
5. 결론
References

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UCI(KEPA) : I410-ECN-0101-2019-560-000438171