Apparent power and power factor measurement by using FPGA-based chip considering nonsinusoidal and unbalanced conditions

  • Authors:

  • Shu-Chen Wang;Chi-Jui Wu;Sheng-Wen Yang

  • Affiliations:

  • Department of Computer and Communication Engineering, Taipei College of Maritime Technology, Taipei, Taiwan;Dep. of Electrical Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan;Dep. of Electrical Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan

  • Venue:
  • IMCAS'09 Proceedings of the 8th WSEAS international conference on Instrumentation, measurement, circuits and systems
  • Year:
  • 2009

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Abstract

Load characteristics of harmonic and unbalance can not be expressed in the traditional apparent power and power factor which only consider the fundamental and three-phase balanced sinusoidal conditions. This paper utilizes the Xilinx Spartan-3 FPGA (XC3S1500 - 4FG676) chip to develop the platform to implement the calculation methods of apparent powers and power factors. This paper discussed the effective power and power factor, the arithmetic power and power factor, and the fundamental power and power factor. ModelSim is used at first to simulate the calculation of apparent powers and power factors to ensure the accuracy of timing and function. Research results show that the designed chip can compute accurately the apparent powers and power factors considering the effects of nonsinusoidal and unbalanced conditions.