직접순시토크 제어에 의한 SR구동형 유압 펌프시스템의 고성능 압력제어

A High Performance Pressure Control of SR Type Hydraulic Pump System using Direct Instantaneous Torque Control Method

  • 안진우 (경성대학교 전기전자메카트로닉스공학부)
  • 발행 : 2007.10.01

초록

This paper presents a high performance pressure control scheme for SR(Switched Reluctance) type hydraulic oil pump using DITC(Direct Instantaneous Torque Control). SR drive has a good feature for pump applications due to a high efficiency, high speed and high torque characteristics. But, SR drive has high torque ripple in commutation region. So, the pump pressure variation is high in the region. In order to reduce the pressure variation, DITC combined with pressure control scheme is presented in this paper. A simple PI controller with flow and pressure limit, generates a reference torque to keep the constant actual pump pressure. The direct torque controller of SR drive generates inverter switching signals according to a control rule and a torque estimator. Computer simulation and experiemtal results show the validation of the proposed control scheme.

키워드

참고문헌

  1. Jame L. Johnson et ai, Introduction To Fluid Power, Science & Technology, 2004
  2. B.C. Kim, D.H. Lee J.W. Ahn, 'Performance of SR drive for hydraulic pump' Proceedings of ICEMS 2005, Vol. 1, pp.659 - 663, 27-29 Sept. 2005
  3. Inderka, R.B., De Doncker, R.W., 'DITC-direct instantaneous torque control of switched reluctance drives', 37th lAS Annual Meeting. Conference Record of the Volume 3, pp. 1605 - 1609, 2002. 10
  4. 이진국, 이동회, 안진우, '직접 순시 토크 제어에 의한 SRM 토크리플 억제', 2006년도 대한전기학회 전기기기 및 에너지변환시스템부문회 춘계학술대회 논문집, pp. 87-90, 2006