Mobile QR Code QR CODE : The Korean Institute of Power Electronics
Title New LED Driver Circuit to Reduce Voltage Stress
Authors Kyu-Min Park ; Kwang-Il Lee ; Sung-Soo Hong ; Sang-Kyoo Han ; Chung-Wook Roh
Page pp.243-250
ISSN 1229-2214
Keywords LED; LED driver; two-stage LED
Abstract This paper examines the design and the performance of a PMA-RSM(permanent-magnet assisted reluctance synchronous motor) for washing machine. A FEM(finite element method) is used to analyze performance and maximum torque characteristic of the proposed PMA-RSM. The designed motor is a combination of salient poles, which is making reluctance torque, and permanent magnet which are located on the air-gap of rotor to get a enough torque during low speed resign. Typical flux barrier type reluctance synchronous motor and the effects of adding magnet into the flux barrier of the rotor of a PMA-RSM are compared and examined. Also the maximum torque point of the reluctance torque by reluctance and reaction torque by magnetic alignment torque, which is in barrier, of the proposed PMS-RSM are derived through simulation. Using this results, the characteristics analysis of a performance, an average torque and a torque ripple of flux barrier RSM and the proposed PMA-RSM are performed through FEM under the saturation effect respectively.