• Proceedings of the KIPE Conference
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• 2015.11a
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• pp.219-220
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• 2015

비대칭 배리어 방법으로 설계된 견인용 매입형 영구자석동기전동기(IPMSM)에 대한 최대토크 제어기법을 Simplorer기반 시뮬레이션해석에 의해 고찰한다. 그리고 레졸버와 R/D 컨버터를 이용하여 회전자의 절대위치를 검출하고, 이를 위한 절대 위치 검출회로 및 제어보드를 제작하여 이에 대한 유효성을 실험을 통해 성능을 확인한다.

• Proceedings of the KIEE Conference
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• 2007.07a
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• pp.1130-1131
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• 2007

레졸바는 엔코더에 비하여 가격면에서 유리하지 않다. 그러나 절대위치를 검지해야 하는 경우와 기계적으로 견고해야 하는 장소에서 정교한 제어에 사용되고 있다. 레졸바에 의한 위치와 속도검출 방법은 일반적으로 관측기를 응용하고 있으며 아날로그신호를 처리해야 하는 부분을 갖고 있다. 본 연구에서는 레졸바의 출력신호를 위치정보인 cos과 sin파형으로 복조하고 복조된 아날로그신호를 제어기에 전송하는 방법을 사용하였다. 제어기의 프로그램에 추정기를 설계하고 극 저속에서 그 동작을 관찰하였다.

• Proceedings of the KIPE Conference
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• 2008.10a
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• pp.22-24
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• 2008

영구자석 동기전동기(Permanent Magnet Synchronous Motor)를 벡터 제어로 구동 시 정확한 회전자 위치정보가 요구된다. 일반적으로 레졸버(Resolver)를 이용하면 회전자의 절대 위치(absolute position)를 알 수 있다. 하지만 레졸버의 변압비 차이, 불평형 여자신호, 불균일한 인덕턴스 성분, 신호처리 회로상의 왜곡으로 인해 신호의 크기 불평형이 발생하고 이는 위치정보에 주기적인 오차 성분이 나타나게 되며, 이러한 오차 성분들은 토크에 영향을 준다. 본 논문에서는 이러한 오차 성분을 수학적 해석을 바탕으로 확인하고 보상하는 방법을 제안하였다. 제안된 알고리즘의 타당성을 실험을 통해 검증하였다.

• The Transactions of the Korean Institute of Power Electronics
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• v.8 no.4
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• pp.336-343
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• 2003

Generally, brushless DC motor(BLDCM) driving system uses hall sensors or encoders as the mechanical position or speed sensors. It is necessary to achieve the information's of rotor position for driving trapezoidal type brushless DC motor without any position sensor. This paper proposes a sensorless driving system with absolute rotor position detecting circuit which acquires both commutating phase and commutating time by analyzing motor phase voltages. Proposed system is applied to a 10k[W] rating motor which actually used in Hybrid Electric Vehicles. The experimental results will show the validity of the proposed system and the practical use of proposed sensorless drive.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.10
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• pp.4569-4573
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• 2011

Resolver doesn't have a advantage to price in comparision with encorder. However, resolver is used to the case of detecting a absoluteness position and is used to a fine control in the place of having a stability by mechanic. The position by resolver and the method by speed detecting is applied by observer and have a part of processing analog signal. In this paper, we used the method which output signal of resolver is demodulated by cos and sin waveform and the demodulated analog signal is transmitted to controller. We designed the estimated on the program of a controller and observed the movement on the low speed.

• The Transactions of the Korean Institute of Power Electronics
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• v.10 no.2
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• pp.148-154
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• 2005

As the exciting point of each phase is determined by the position of rotor, the rotor's accurate position-information is needed for the Switched Reluctance Motor(SRM). When using an absolute-encoder or a resolver, to detect the location of rotor the initial starting is possible, as early sensing of rotor's location is possible. However, this is not appropriate, considering the economical efficiency, and in case of using the incremental-encoder, there's a problem at initial starting as it is not easy to track down the location of rotor at the very beginning. When using Hall-ICs, there's a fault, as it needs a special ring magnet. Considering the initial starting and economical efficiency, the optical sensor technique using a slotted-disk and an opto-interrupter is appropriate, however, this method needs three opto-interrupters and a slotted-disk when using the 6/4 pole SRM. Nevertheless, in this paper, it used only two optical sensors to operate 6/4 pole SRM and made the start up and also forward and reverse operation possible. By excluding the slotted-disc md shortening a optical sensor, it improved the convenience and economical efficiency of the production. Also, as the space for slotted-disc is no more needed, it was able to reduce the size of motor.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.2 no.2
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• pp.231-239
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• 1998

In this paper, we designed a current controlling servo system for speed control of a PMSM. In existing auto-tuning methods for PI controller parameters, the output response is delayed and the overshoot is generated. By solving these existing problems in this paper, a new PI auto-tuning method is applied to the speed controller for fast-response and reduced overshoot. PMSM servo systems offer a great advantage in unmanned factories where a great number of servo motors are employed, because of its easy maintenance characteristics and controllability. The implemented servo system is composed of absolute position detecting circuits of a rotor, a new auto-tuning PI control algorithm, a speed controller by using DSP, and power driving section. The proposed servo system is verified for it's practical availability by considering experimental results.