CONTROL UNIT FOR AC ROTATING MACHINE Russian patent published in 2013 - IPC H02H7/08 H02P21/00 H02P21/12 H02P27/04 

FIELD: electricity.

SUBSTANCE: in control unit for alternating-current rotating machine with function of current limitation in order to protect AC rotating machine and excitation module, for example, of the inverter from current overload the frequency correction arithmetic device has an element for amplification coefficient computation based on electric permanent values related to AC rotating machine and an amplifier to calculate arithmetic value of frequency correction based on amplification coefficient computed by the element for amplification coefficient computation and current of AC rotating machine, at that an arithmetic value of frequency correction is output as frequency correction value within the preset mode of rotation for AC rotating machine.

EFFECT: ensuring reliability for current limitation of AC rotating machine at different values of its electric parameters.

4 cl, 26 dwg