Inverter control method and apparatus

Details Inverter control method and apparatus Inverter control method and apparatus

1995-01-19

1998-04-28

Sircus, Brian

Electricity: motive power systems

Positional servo systems

Pulse-width modulated power input to motor

318811, 388805, 388812, H02P 763

Patent

active

057449279

ABSTRACT:
An inverter control apparatus and method for a motor driven by an inverter circuit. The primary current of the motor is detected by a detector circuit and is used in combination with a primary current command value to provide pulse-width modulation of the inverter circuit. The inverter is controlled by a switching circuit that can change the PWM frequency based on any one or more factors, including motor speed, motor speed or position control mode, equivalent load factor and detected temperature.

REFERENCES:
patent: 5248926 (1993-09-01), Kotake et al.
patent: 5343382 (1994-08-01), Hale et al.
Abstract of JP-62-77895 (Mitsubishi).
Abstract of JP-5-49298 (Matsushita).
Abstract of JP-4-295278 (Mitsubishi).
Abstract of JP-3-178565 (Toshiba).

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