Th. Antonakopoulos and V. Makios:

A New Microcontroller Based Technique for Generating Variable Voltage/Frequency Sinusoidal PWM Signals

International Journal of Electronics, Vol. 88, No. 5, 2001, pp. 615-624.

Abstract: This paper presents a flexible and robust microcontroller-based technique for generating the control signals of any sinusoidal pulse width modulation (SPWM) scheme for variable voltage/frequency output. The proposed technique exploits the fully static design of a high-speed microcontroller and generates the PWM control signals by varying the controller’s clock, while keeping the number of the algorithm processing states constant. As the experimental results show, the technique can be used for transient-free frequency and/or voltage changes with very good resolution and a wide range of applications.

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