Digital sine wave generator and motor controller

Details Digital sine wave generator and motor controller Digital sine wave generator and motor controller

1993-12-06

1996-02-27

Sircus, Brian

Electricity: motive power systems

Induction motor systems

Primary circuit control

318807, 318812, 364720, 395142, G06F 1546

Patent

active

054951607

ABSTRACT:
Digital sinusoidal waves are generated using a method based on an error measuring algorithm used to generate a synthesized circle. X and Y waves are generated step-wise to follow the contour of a reference circle in the x-y plane by computing the mean square error at each step and using the error value to calculate the next values of X and Y. The digital sine waves are converted to three-phase, pulse width modulated signals. Direct current power is inverted to three phase power to operate a motor under the control of the PWM signals. The controller permits control of voltage, voltage-frequency ratio, boost voltage, and acceleration-deceleration.

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