Patent ID: 6885166

Claim:
A device for regulating a polyphase machine in a field-oriented regulation in which a direct-axis voltage and a quadrature-axis voltage are determined as manipulated variables of a regulating system, the device comprising: a pulse-width-modulation inverter for generating phase voltages of individual phases, the inverter being triggered by one of (a) a PWM signal in PWM operation and (b) a block signal in block operation; a software device for generating a PWM control signal which determines switching points in time of the PWM signal; a software device for generating a block control signal which determines switching points in time of the block signal; a switch device which in a PWM mode selects the PWM control signal and in a block mode selects the block control signal; and a PWM/block signal device for receiving one of the PWM control signal and the block control signal relayed from the switch device, and for supplying one of the PWM signal and the block signal at an output.