Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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An On-Line Harmonic Elimination Pulse Width Modulation Scheme for Voltage Source Inverter

  • Salam, Zainal (Faculty of electrical Eng., Universiti Teknologi Malaysia)
  • Published : 2010.01.20
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Abstract

This paper proposes a new harmonic elimination PWM (HEPWM) scheme for voltage source inverters (VSI) based on the curve fittings of certain polynomials functions. The resulting equations to calculate the switching angle of the HEPWM require only the addition and multiplication processes; therefore any number of harmonics to be eliminated and the fundamental amplitude of the pole switching waveform (NP1) can be controlled on-line. An extensive angle error analysis is carried out to determine the accuracy of the algorithm in comparison to the exact solution. To verify the workability of the technique, an experimental single phase VSI is constructed. The algorithm is implemented on a VSI using a 16-bit microprocessor. The results obtained from the test rig are compared to the theoretical prediction and the results of the MATLAB simulations.

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References

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