Performance improvement of a double stage switch mode AC voltage regulator

Abstract

Widespread use of sensitive loads in industries has required the need for high efficiency voltage regulators in order to provide continuous and fast dynamic adjustable AC voltage. This paper introduces a new control strategy to improve the response time and performance of a double stage switch mode regulator. The proposed strategy responds to input voltage variations quickly and improves the efficiency and performance of the circuit. Results of some simulations are presented and analyzed. Experimental tests on a laboratory prototype verify the excellent performance of the proposed system.

High‐efficiency low‐cost AC/AC buck converter with stability analysis

“…In some practices, selective switching based on current and voltage waveforms is proposed in which voltage or current sensors are needed to detect the polarity of the voltage/current [17, 18]. This method not only increases the cost, but also can affect the overall system reliability due to higher complexity and inaccuracy [19]. On the other hand, using snubber circuits limits the output power of the converter and makes it hard or impossible to use the converter at higher power levels due to the size and heat dissipation of the snubber elements.…”