| Title |
Switching Characteristics Analysis of a 3-phase Voltage Disturbance Generator Applicable to Linear and Nonlinear Loads |
| Authors |
Eui-Cheol Nho ; Sung-Dae Park ; In-Dong Kim |
| Keywords |
Voltage disturbance generator; Linear and nonlinear loads |
| Abstract |
This paper proposes the instantaneous source voltage and phase current control for torque ripple reduction of a high speed miniature BLDC motor. As compared with general BLDC motor, a high speed miniature BLDC motor has a fast electrical time-constant. So the current and torque ripple are very serious in a conventional PWM switching during conduction period. In order to reduce the switching current ripple, instantaneously controlled source voltage is supplied to the inverter system according to the motor speed and load torque. In addition, the fast hysteresis current controller can keep the phase current in the limited band. The proposed method is verified by the computer simulation and experimental results. |