Design and Implementation of a DSP Controlled Bridgeless Power Factor Corrector

  • 陳 聖儒

Student thesis: Master's Thesis


When conventional boost power factor corrector (PFC) circuit operates in high power application rectifier bridge diode causes high power loss A bridgeless PFC circuit with digital signal processor (DSP) control is implemented in this thesis Average current mode is implemented by DSP and the input current follows the input voltage Therefore the PFC converter achieves high power factor and low total harmonic distortion current Types of PFC converter and the methods of control are discussed The operating principle of semi-boost PFC converter is analyzed and the parameters of key components are design The software of average current mode control in DSP is described Outter voltage loop inner current loop and the design of the compensator are introduced Finally a 1 3 kw bridgeless PFC circuit with DSP control is implemented Input voltage range is 90 Vrms ~ 264 Vrms and output voltage is constant 400 V Maximum efficiency is 98 1% Maximum power factor is 0 996 and minimum iTHD is 5 1%
Date of Award2016 Aug 29
Original languageEnglish
SupervisorTsorng-Juu Liang (Supervisor)

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