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Apparatus for driving electric machine arranged in vehicle, has control unit to generate drive signals for driving switching elements, so that electric machine torque corresponding to torque setpoint is generated based on duty cycle values
Apparatus for driving electric machine arranged in vehicle, has control unit to generate drive signals for driving switching elements, so that electric machine torque corresponding to torque setpoint is generated based on duty cycle values
A reference unit (22) transmits torque setpoint for electric machine (12). A criterion unit (54) provides optimization criterion. A voltage vector determination unit (34) determines torque setpoint associated with voltage vector. A duty ratio determining unit (52) determines duty cycle values for switching elements (16) based on a function of voltage vector and optimization criterion. A control unit (56) generates drive signals for driving switching elements, so that electric machine torque corresponding to torque setpoint is generated based on duty cycle values. Independent claims are included for the following: (1) method for driving electric machine; and (2) computer program product storing program for driving electric machine.
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