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ADVANCED TOPICS IN ELECTRICAL ENGINEERING – ATEE 2017

Papers Proceedings »

Automated System Adjustment Criterion for Sinusoidal Input Signal

The paper presents a PWM control system of a sinusoidal voltage as output of a single-phase inverter with resistive load and LC low-pass filter. First the PWM control for a sinusoidal voltage and the control loop optimization via modulus criterion for step input signal are discussed, further analyzing the stationary error for a sinusoidal signal. This error can be reduced to zero by introducing a resonant element in the control loop. A new method of introducing a resonant element is proposed, such that the open loop transfer function of the system equals the transfer function derived from the modulus criterion multiplied by a resonant element and added by one or two compensating zeros. The presented method is confirmed by simulation results.

Author(s):

Mihail Ștefan TEODORESCU    
University Politehnica of Bucharest
Romania

Stefan George ROSU    
University Politehnica of Bucharest
Romania

 

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