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Double stage switch mode AC voltage regulator

Hajimoradi, M. R ; Sharif University of Technology | 2011

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  1. Type of Document: Article
  2. DOI: 10.1109/PEDSTC.2011.5742414
  3. Publisher: 2011
  4. Abstract:
  5. Development of high frequency power electronic devices leads to high performance and flexible switch mode AC voltage stabilizers instead of traditional electromechanical types. This paper introduces a novel double stage topology for switch mode AC voltage regulators. The system produces a continuous adjustable isolated AC voltage providing a constant output voltage for sensitive loads. In order to simplify the control strategy, a symmetrical PWM is used. In contrast with conventional AC choppers, the proposed circuit does not need any snubber circuits or voltage and current sensors which leads to a simpler and more reliable circuit. Detailed analysis and simulation results show the satisfactory performance of the proposed structure in regulating the load voltage. The validity of the results is verified by experiment by implementing a single phase prototype
  6. Keywords:
  7. Switching ; Ac voltage ; AC Voltage Regulator ; Ac voltage stabilizer ; AC-chopper ; Analysis and simulation ; Constant output voltage ; Control strategies ; Current sensors ; Direct AC-AC Voltage Converter ; Double stage ; High frequency power ; Load voltages ; Sensitive loads ; Single phase ; Snubber circuit ; Symmetrical PWM ; Electric potential ; Electric rectifiers ; Electric switches ; Electromechanical devices ; Power electronics ; Voltage control ; Voltage regulators ; Choppers (circuits)
  8. Source: 2011 2nd Power Electronics, Drive Systems and Technologies Conference, PEDSTC 2011, 16 February 2011 through 17 February 2011 ; February , 2011 , Pages 187-192 ; 9781612844213 (ISBN)
  9. URL: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5742414