| 제목 |
전동기 파라미터 가변을 통한 변속기용 전동식 오일 펌프의 센서리스 극저온 저속 구동 성능 개선 |
| 분야 |
전기ㆍ전자ㆍ통신 |
| 언어 |
Korean |
| 저자 |
최진철(명화공업), 강준호(명화공업), 이우택(창원대학교) |
| Key Words |
Sensorless(센서리스), Electric motor(전동기), Electric oil pump(전동식 오일펌프), Transmission(변속기), Parameter(파라미터) |
| 초록 |
This paper describes an approach in improving the performance of the position sensorless control with varying motor parameters for a permanent-magnet synchronous motor. The model-based sensorless method requires accurate motor parameters, such as resistance and inductance. At low speed, the resistance and inductance variation degrade the accuracy of the position estimation. Motor temperature and magnetic saturation are the main sources of perturbation for the parameters. In this paper, the resistance is identified online based on the recursive least squares(RLS) method, considering the variation of the flux linkage, but the offline finite element analysis(FEA) value of the q-axis inductance is used. Dynamic resistance and inductance parameters are applied to sensorless drives of an electric oil pump for automotive transmissions which require very low speed drives of pumps at a lower limit oil temperature. The experimental results showed improvements of the low-speed drive performance for an automotive electric oil pump with 270 V 1 kW. |
| 원문(PDF) |
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