电容起动式单相电机起动电容的计算

CALCULATION OF STARTING CAPACITANCE OF CAPACITOR START SINGLE PHASE MOTORS

以等效电流法为基础，推导了电容起动式单相电机主、副绕组为任意空间角度时，起动转矩及品质因数的计算公式。本文用直接法中一维寻优的黄金分割方法，求出了使起动转矩或品质因数达到最大时的起动电容值。

On the basis of equivalent current method, this paper deduces the fomulas for calculating starting torque and quality factor of capacitor start single phase motors in which the main winding and the auxiliary winding are displaced by any space angle. One dimension search method as a kind of direct method is used in this paper for getting starting capacitance with maximum starting torque or maximum quality factor.