DEVICE for CONTROL of excitation of synchronous motor in dynamic mode

摘要

A device for control of excitation of synchronous motor in dynamic modes that comprises a synchronous motor with excitation winding connected through a current sensor to a single-phase bridge converter transistor the output of which is connected to the storage capacitor. Additionally a buffer throttle is introduced, a thyristor converter the output of which is connected in parallel with excitation winding, the input is connected to the secondary winding of the transformer the primary winding of which is connected to the network, the thyristor converter control unit, excitation current master block, first and second comparison units, the first and second relay elements, the first and the second logic elements, differentiation block and locking gate element, at that the output of the excitation current master unit is connected to the first input of the first and second comparator blocks, the second input of those is connected to the output of the current sensor unit , the first comparator unit output is connected to the input of the first relay element, the second comparator unit output is connected to the input of the second relay element, the output of the first relay element is connected to the second input of the first logic element, the output the second relay element is connected to the second input of the second logic element, the first inputs of those are connected to the output of the differentiation block with the input connected to the excitation current master block, the outputs of the logical elements are connected to the control electrodes of the transistors of the transistor converter, the first input of the blocking logic element is connected to the output of excitation current master unit, the second input is connected to the output of differentiation block, the output of the logic blocking element is connected to the input of the thyristor converter control unit, the output of this one is connected to the control input of the thyristor converter.