抄録
A method is given for calculating the characteristics of the series-connected windings capacitor motors by applying the theory of two-phase symmetrical components. This winding connection is effective to decrease the voltages of windings and capacitor. Experimental confirmation of the theory is included. Relation between the characteristics of the series connected windings capacitor motor and that of the parallel-connected windings capacitor motor are clarified. Two methods for speed adjustment of the series connected windings capacitor motor are discussed: (a) capacitor adjust type (b) extra-winding type. The principal characteristics, such as the slip for the maximum torque, and efficiency, are obtained taking into account the symmetric conditions. Characteristics of these two-speed capacitor motor are compared with that of the conventional capacitor motor with tapped auxiliary winding.
