The Transactions of the Korean Institute of Power Electronics (전력전자학회논문지)

The Korean Institute of Power Electronics (전력전자학회)
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A New 12-Pulse Diode Rectifier System With Low kVA Components For Clean Power Utility Interface

  • ;
  • Prasad N.Enjeti (Power Quality Laboratory at Texas A&M University)
  • Published : 1999.10.01
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Abstract

This paper proposes a 12­pulse diode rectifier system with low kVA components suitable for powering switch mode power supplies or ac/dc converter applications. The proposed 12-pulse system employs a polyphase transformer, a zero sequence blocking transformer (ZSBT) in the dc link, and an interphase transformer. Results produce near equal leakage inductance in series with each diode rectifier bridge ensuring equal current sharing and performance improvements, The utility input currents and the voltage across the ZSBT are analyzed the kVA rating of each component in the proposed system is computed. The 5th , 7th , 17th and 19th harmonics are eliminated in the input line currents resulting in clean input power. The dc link voltage magnitude generated by the proposed rectifier system is nearly identical to a conventional to a conventional 6-pulse system. The proposed system is suitable to retrofit applications as well as in new PWM drive systems. Simulation and experimental results from a 208V , 10kVA system are shown.

Keywords

References

  1. IEEE PES and Static Converter Committee of IAS IEEE Recommended Practices and Requirements for Harmonic Control in Electric Power Systems
  2. Powr Electronic Converters AC/DC conversions G. Seguier
  3. Rectifier Circuits : Theory and Design J. Schaefer
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  8. IEEE Trans. on Industry Applications v.IA-22 no.5 New Method for Reducing Harmonics Involved in Input and Output of Rectifier with Interphase Transformer S. Miyairi (etc. al.)
  9. IEEE PESC Conf. New Polyphase Transformer Arrangements with Reduced kVA Capacities for Harmonic Current Reduction in Rectifier Type Utility Interphase S. Choi;P. Enjeti;I. Pitel
  10. United States Patent : 5,903,066 Active interphase reactor for 12-pulse rectifier P. Enjeti;I.J. Pitel