| 摘要 |
To ensure that a synchronous motor supplied from a DC source operates at maximum torque and efficiency, the static windings W1 to W4 are connected to the DC voltage supply V0 in a cyclic sequence by cyclically applying a control voltage to valves V1 to V4 in accordance with the position of the motor rotor and within an electric angular region which is substantially symmetrical with respect to the crest of the negative half wave of the AC voltage U1-U4 induced in a static winding which is not connected to the DC supply voltage. <IMAGE> |
