System and method of dynamic regulation of real power to a load

A method for controlling a motor drive output comprising:

• operating a motor drive according to a static voltage-frequency profile to generate an output power;
• determining a value of a specified motor parameter corresponding to the static voltage-frequency profile;
• determining a tolerance zone of the specified motor parameter;
• selectively modifying the static voltage-frequency profile during operation of the motor drive to generate a reduced motor input power;
• and
• operating the motor drive at a voltage-frequency setting corresponding to a value of the specified motor parameter within the tolerance zone.

A motor drive configured to supply power to a load, the motor drive comprising:

• an inverter designed to provide power to the load;
• and
• a controller operationally connected to control operation of the inverter, the controller configured to:
• adjust a voltage-frequency setting during operation of the motor drive to cause the inverter to operate according to each of a plurality of varied voltage-frequency settings;
• monitor a real-time value of a motor parameter corresponding to each voltage-frequency setting;
• identify a tolerance zone for the motor parameter;
• and
• cause the inverter to operate according to the voltage-frequency setting such that the motor parameter is within the tolerance zone;
• wherein adjusting the voltage-frequency setting during operation of the motor drive comprises adjusting at least one of a motor voltage and a motor frequency, so as to minimize at least one of a motor torque and a motor input power.