| 摘要 |
A frequency converter comprises three in series connected bridge voltage inverters in each output phase, each being composed of four two-side conductivity keys that have completely controlled thyristor or transistor and parallel connected feedback diode, three insulated direct voltage sources connected in diagonal inverters direct current, keys control inputs are connected with outputs of control unit with three input of phase voltage setting, an electric drive control system. Each phase has an adder and a function generator with input being connected to the control system output and the first adder input. The second adder input is connected with output of the function generator, output being connected with corresponding input of phase voltage setting of control unit. |
