Papers by Keyword: Supply Voltage

Abstract: A novel Line-start Permanent Magnet Synchronous Motor (LS-PMSM) with arc straight inserted permanent magnet is presented in this paper. The Simulink model is established according to voltage equation and motion equation, starting performance with rated voltage is calculated, performance on different voltages is also calculated, and the lowest voltage is obtained. Experimental facility is established. Influence of voltage on starting performance, such as electromagnetic torque, armature current, speed and slip ratio is analyzed by simulation and experimentation respectively. Results verify that good matching attributes are got. The foundation for widely industrial application of this LS-PMSM with novel rotor structure is found with performance research done above.

Abstract: This paper presents investigation results of the influence of the supply voltage amplitude variation law on the efficiency of AC induction motor in variable-speed drive based on the frequency converter. It is demonstrated that the commonly employed linear and square voltage amplitude variation laws do not provide the highest efficiency of the AC induction motor. The corrected AC voltage amplitude variation dependences for different motor load torque, at which high efficiency of the motor supplied by the frequency converter is maintained, are proposed and discussed. Reported experimental study was performed on a special test bench.