• Journal of the Korea Institute of Information and Communication Engineering
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• v.19 no.8
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• pp.1874-1882
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• 2015

In this paper, robust backstepping controller for IPMSM is proposed based on the PID integral sliding mode control. Because of the unmatching condition of load, the sliding mode control is difficult to be used for IPMSM without backstepping. However, the backstepping control has the difficulty of deriving error dynamics which is derived by differentiating the previous input. This difficulty is avoided by adopting PID as a nominal controller for the integral sliding mode control. The proposed controller can be achieved easily by adding integral sliding controller to the conventional PID controller.

• Journal of Power Electronics
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• v.12 no.3
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• pp.468-476
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• 2012

The interior permanent magnet synchronous motor (IPMSM) has been widely used in electric vehicle applications due to its excellent power to weigh ratio. This paper proposes the maximum torque control of an IPMSM drive using an adaptive learning (AL) fuzzy neural network (FNN) and an artificial neural network (ANN). This control method is applicable over the entire speed range while taking into consideration the limits of the inverter's rated current and voltage. This maximum torque control is an executed control through an optimal d-axis current that is calculated according to the operating conditions. This paper proposes a novel technique for the high performance speed control of an IPMSM using AL-FNN and ANN. The AL-FNN is a control algorithm that is a combination of adaptive control and a FNN. This control algorithm has a powerful numerical processing capability and a high adaptability. In addition, this paper proposes the speed control of an IPMSM using an AL-FNN, the estimation of speed using an ANN and a maximum torque control using the optimal d-axis current according to the operating conditions. The proposed control algorithm is applied to an IPMSM drive system. This paper demonstrates the validity of the proposed algorithms through result analysis based on experiments under various operating conditions.

• The Transactions of The Korean Institute of Electrical Engineers
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• v.64 no.10
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• pp.1486-1492
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• 2015

The following study carried out the characteristic analysis based on the magnet segment of Interior Permanent Magnet Synchronous Motor(IPMSM) for the urban railway vehicles. IPMSM affects the electromagnetic characteristics through the change in magnetic flux based on the rotor structure, and significantly influences the structural features through the change of pressure. Therefore, satisfied by the demanded traction force of the IPMSM, magnet segment derived three different model types. The 1-segment PM model consisted an undivided permanent magnet. The 2-Bridge model consisted a divided permanent magnet with the application of Bridge. The 3-Bridge model consisted additional dividing with one more Bridge applied. The electromagnetic characteristics of the three models were compared and analyzed along with the structural features regarding the scattering of permanent magnet based on strong centrifugal force from the rotation of the rotor at high speed. In conclusion, the final model with electromagnetic characteristics and structural features most suitable of IPMSM for the urban railway vehicles was derived, and the effectiveness was verified through the characteristic experiments after the production of the derived model.

• The Transactions of The Korean Institute of Electrical Engineers
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• v.67 no.10
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• pp.1303-1307
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• 2018

A improving sensorless compensator for the IPMSM(Interior Permanent Magnet Synchronous Motor) drive system is proposed. Generally, the motor drive system is required the robust parameter variation and disturbance. The speed estimation methods of the conventional IRP(Instantaneous Reactive Power) compensator is improved by the speed estimation techniques of the current model observer with the proposed instantaneous reactive power compensator. Performance evaluations of the novel speed error compensator and sensorless control system are carried out by the experiments.

• Proceedings of the KIEE Conference
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• pp.928-929
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• 2011

본 논문에서는 IPMSM(Interior Permanent Magnet Synchronous Motor)의 회전자에 보조 슬롯인 노치(Notch)와 자속 장벽인 베리어(Barrier)를 설치하여 전반적인 구동 특성을 향상 시켰으며, 각 형상에 따른 d, q축 인덕턴스의 변화를 고찰하였다. 인덕턴스의 계산은 IPMSM의 등가회로 및 벡터도를 이용하였으며 계산되어진 인덕턴스로 전류위상각에 따른 토크를 계산하고 FEM(Finite Element Method)결과와 비교하였다.

• Proceedings of the KIPE Conference
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• pp.444-445
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• 2010

This paper deals with the development of an IPMSM motor drive for NEVs. The drive system consists of 7kW IPMSM motor, DSP-based controller, and MOSFET-based inverter. The controller provides the same accelerator function as the conventional vehicle for an easy NEV drive.

• Proceedings of the KIPE Conference
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• pp.526-527
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• 2010

본 논문에서는 슬라이딩 모드 관측기를 이용하여 IPMSM(Interior Permanent Magnet Synchronous Motor)의 센서리스 제어의 기동특성에 관한 연구를 수행하였다. IPMSM의 센서리스 제어는 초기 구동시 회전자의 위치를 알 수가 없으므로 Open-Loop알고리즘을 이용하여 강제로 모터를 구동시킨다. 그러므로 Open-Loop에서 Closed-Loop로 제어되는 시점에서 부하의 상태에 따라 기동 특성에 문제점을 야기 시킬 수 있다. 본 논문에서는 부하에 따라 기동 특성에서 야기되는 문제점과 해결책을 제시한다. 제시된 방법을 시뮬레이션을 통해 검증한다.

• Proceedings of the KIPE Conference
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• pp.15-16
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• 2012

본 논문에서는 스위칭 주파수의 구형파 전압 주입을 이용한 IPMSM의 센서리스 제어 기법에서 개선된 신호처리 방법을 제안하였다. 제안된 기법에서는 기본파 전류와 고주파 성분 전류추출에 필요한 필터를 간단히 구현함으로써 신호처리에서 발생하는 시지연을 줄일 수 있으며, 그 결과 센서리스 제어의 동특성을 개선할 수 있다. 800[W]급 IPMSM에 대한 실험을 통해 제안된 방법의 타당성을 검증하였다.

• Proceedings of the KSR Conference
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• pp.2027-2034
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• 2008

To predict efficiency of Interior Permanent Magnet Synchronous Motors(IPMSM) and to cope with the demagnetization risk of permanent magnets used in the IPMSM, accurate iron analysis of the IPMSM is very important at the motor design stage. In this paper, we present the method to estimate the iron loss for the IPMSM considering the condition of field weakening control and harmonics of flux density waveform.

• Proceedings of the KIEE Conference
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• pp.694_695
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• 2009

본 논문은 매입형 영구자석 동기 전동기(IPMSM)의 고속출력 구동을 위한 제어 특성 해석을 시뮬레이션을 통해 나타낸다. IPMSM의 d축,q축 인덕턴스인 Ld, Lq 선형모델과 비선형 모델의 선형 제어와 비선형제어를 실험과 시뮬레이션에 의하여 비교 분석 하였다. 본 논문은 IPMSM에 최적화된 제어 시스템 구연에 있어서 기초 자료가 될 것이다.