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Investigation of Tradeoffs Between Efficiency, Power Density and Switching Frequency in Three-Phase Two-Level PWM Boost Rectifier

Fig. 1. Three-phase two-level boost rectifier power stage design procedure.
Efficiency and power density are usually two important goals in power converter design. The goal of this paper is to develop an evaluation procedure to investigate the relationship between efficiency, power density and switching frequency. A three-phase two-level PWM boost rectifier is used as an example. The estimated efficiency and converter weight are shown to change as the switching frequency and power rating change. A comparison of this estimation with results obtained from a hardware prototype verify the estimation procedure.
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