Analysis and Design of PFC Rectifier System without ADC |
Author(s): |
Gowtham M , SELVAM COLLEGE OF TECHNOLOGY; Srinivasan K, SELVAM COLLEGE OF TECHNOLOGY |
Keywords: |
Single Phase AC/DC Converter, Bridge Rectifier, Power Factor Correction, DC/DC Boost rectifier |
Abstract |
The mains current in an ac/dc converter contains periodic current pulses due to the action of rectifier and output filter capacitor. The high current peaks cause harmonic distortion of the supply current and low power factor. This results in a poor power quality, voltage distortion, poor power factor at input ac mains, slowly varying rippled dc output at load end and low efficiency. This project proposes a DC power supply system to give high power factor and low current distortion on the rectifier side and provide stable DC voltage on the isolated DC-DC converter side. The proposed method which uses a MOSFET switch driven by the rectangular pulses of continuously varying duty cycle over a period of supply voltage is analyzed. Method of re-shaping the input current waveform to be similar pattern as the sinusoidal input voltage is done by the Boost converter and the related controls that act as a Power Factor Correction (PFC) circuit. The controller is based on PIC microcontroller, requires no A/D converter type based programmings. Hence cost is low and gives high effectiveness. In this power factor correction is made automatic by using the closed loop circuit and workout by simulink using matlab. A simulation design example of 2600Watts soft-switching single phase DC power supply system is examined to assess the converter performance. |
Other Details |
Paper ID: IJSRDV7I110229 Published in: Volume : 7, Issue : 11 Publication Date: 01/02/2020 Page(s): 358-361 |
Article Preview |
|
|