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Power electronic converters based on piezoelectric transformer (PT) have been widely adopted in recent years due to their many inherent advantages such as safety, low housing profile and high power density. However, few studies have been conducted about noises emitted by PT converters. In this paper, we study conducted EMI problems in a 10 W, DC-DC PT converter. The different sources and specific...
This paper presents a family of the PT-based CCM CP-PFC electronic ballasts, which include voltage-source type, current-source type and voltage-source current-source type. By replacing L-C resonant tank and high-voltage transformer in the discrete CCM VS, VSCS CP-PFC electronic ballast with PT, the cost and volume can be reduced. The main drawbacks of the PT-based DC-side DCM CP-PFC electronic ballasts...
Piezoelectric transformer (PZT) is a device which transforms voltage by piezoelectric effect and converse piezoelectric effect of ceramic material. Compared with electromagnetic transformer, it has favorable characteristics of miniaturization, electromagnetic-noise free and the variable voltage gain with frequency and impedance. The modeling of piezoelectric transformer is the base of control and...
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