• Proceedings of the KIEE Conference
• /
• 2005.04a
• /
• pp.96-98
• /
• 2005

This paper presents a new two-phase linear hybrid stepping motors (LHSM), which has two windings per phase and one of them shares the other phase winding. The proposed motor shows a unique ability to deliver low cogging force without any particular complex control scheme and additional power electronics hardware in micro stepping control. An analytical and experimental comparison between conventional and proposed LHSM is evaluated to confirm the effectiveness of the proposed design.

• The Transactions of The Korean Institute of Electrical Engineers
• /
• v.65 no.5
• /
• pp.769-772
• /
• 2016

In this paper, the overhang structure was applied to the axial flux permanent magnet (AFPM) motor. This paper describes the overhang effect in the AFPM motor. Moreover, the overhang effect was analyzed according to the different overhang length and an optimal overhang structure was proposed. Finally, the proposed structure was applied to design, analysis and experiment of prototype motors. Through the comparison between 3D finite element analysis results and experimental ones, the validity of proposed structure is clarified.

• Proceedings of the KIEE Conference
• /
• 2007.10a
• /
• pp.239-240
• /
• 2007

In this paper, a robust adaptive backstepping controller will be proposed for the speed control of permanent magnet synchronous motors in using electrical vehicles. Stator resistance, damping coefficient, load torque are considered as uncertainties and noise generated at applying load torque to motor is also considered. It shows that the backstepping algorithm can be used to solve the problems of nonlinear system very well and robust controller can be designed without the variation of adaptive law. Simulation results are provided to demonstrate the effectiveness of the Proposed controller.

• Proceedings of the KIEE Conference
• /
• 2007.10a
• /
• pp.349-350
• /
• 2007

In general, PID controller is widely used for speed control of motor. PID control method is easy and simple to set the control gains without model parameters. However, the precise and robust control of the motors needs complex and difficult control method. In this paper, we present a simple and robust speed controller for disturbances of a motor. The numerical simulation shows that the proposed control considering disturbances can improve the speed tracking performance more than PI control.

• Journal of Power Electronics
• /
• v.3 no.1
• /
• pp.33-39
• /
• 2003

This paper presents the self-commissioning for surface-mounted permanent magnet synchronous motor. The proposed strategy executes three tests with a vector controlled inverter drive system. To do this, synchronous d-q axes currents are appropriately controlled for each test. From the three tests, armature resistance, armature inductance, equivalent iron loss resistance, and emf coefficient are identified automatically. The validity of the proposed strategy is confirmed by experimental results.

• Proceedings of the KIPE Conference
• /
• 2018.07a
• /
• pp.414-415
• /
• 2018

본 논문에서는 유도 전동기의 V/f 운전 시 동손을 최소로 하는 제어 방법을 제안한다. 제안된 방법은 V/f 운전 시 부하에 따라 최소 동손 제어가 가능하도록 고정자 전압 크기를 가변하여 부하 변동에 따른 동특성 향상과 효율적인 구동이 가능하게 하였다. 5HP 유도 전동기 구동시스템에 대한 시뮬레이션을 통해 제안된 기법의 효용성을 검증하였다.

• Proceedings of the KIPE Conference
• /
• 2013.07a
• /
• pp.84-85
• /
• 2013

본 논문은 스파스 매트릭스 컨버터로 구동되는 유도전동기에 과도응답특성 개선을 위한 모델예측제어 기법을 제안한다. 제안하는 기법은 유도전동기의 파라미터를 이용하여 구한 예측 토크와 자속을 통하여 비용함수를 최소화하는 최적의 스위칭 상태를 결정한다. 시뮬레이션을 통해 제안한 제어 기법의 타당성을 검증한다.

• Proceedings of the KIPE Conference
• /
• 2019.11a
• /
• pp.100-101
• /
• 2019

본 논문은 유도전동기 고정자 자속 기준 벡터제어에서, 슬립 관계식과 순환 최소자승법을 이용하여 회전자 저항 및 고정자 과도 인덕턴스를 동시에 추정하는 알고리즘을 제안한다. 모의실험을 수행하여, 추정 회전자 저항과 고정자 과도 인덕턴스가 제안된 방법에 의해 각각 실제 값에 수렴함을 보인다.

• Proceedings of the KIPE Conference
• /
• 2019.11a
• /
• pp.110-111
• /
• 2019

본 논문은 자동차 쿨링팬용 스위치드 릴럭턴스 전동기(이하, SRM) 설계 및 성능 비교에 관한 논문으로 기존의 유니버설 및 브러쉬리스 전동기를 대체하기 위해 3상 6/4극 및 12/8극 그리고 4상 8/6극 SRM을 설계하였으며 성능을 비교를 통해 적용 및 대체 가능성을 검증하였다. 각 구조의 성능은 시뮬레이션을 통해 성능을 예측하였으며 예측된 성능을 시험을 통해 검증하였다.

• Proceedings of the KIEE Conference
• /
• 1998.07a
• /
• pp.269-271
• /
• 1998

Reluctance Synchronous Motors(RSM) with new rotor shape are considered in this paper. Since the stator of a RSM is similar as that of an induction motor, attention is focused here on the rotor structure. We have designed the parameter of RSM and analyzed the characteristics of the electromagnetic energy conversion.