Capacitors Optimization of Novel Series-Connected Capacitor-Run Three-Phase Induction Motor Fed by Single-Phase Supply

摘要

The phase-shift capacitors played the important role in the three-phase induction motor operation with single-phase power supply. This paper provided the capacitors optimization of three-windings in series connection motor. First, the capacitors are optimized with the golden section method by selecting the smallest negative-sequence current coefficient as objective function. Then capacitances are further optimized with simulated annealing method by taking the highest efficiency under rated loads as objective function. The combined optimization method enabled the proposed motor to operate with high efficiency and provided the method for capacitors determination. The calculation and test efficiency of the motor with the optimized capacitors were compared to valid the optimization. The effect of capacitance on the motor performance was investigated with simulation, which provided the evidence of the optimization.