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Selection of excitation signal waveform for improved performance of wound-rotor resolver*

Farhadi Beiranvand, A ; Sharif University of Technology | 2019

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  1. Type of Document: Article
  2. DOI: 10.1109/PEDSTC.2019.8697277
  3. Publisher: Institute of Electrical and Electronics Engineers Inc , 2019
  4. Abstract:
  5. Wound-Rotor (WR) resolvers are similar to two-phase synchronous generators. Their difference is related to the excitation signal. While DC voltage is used for exciting synchronous generator, high frequency AC voltage is employed for that of resolver. The common waveform for excitation signal of resolver is sinusoidal voltage. However, preparing the high frequency sinusoidal voltage in the resolver to digital converter (RDC) is always a challenge. Therefore, in this paper different high frequency AC waveforms are applied as the excitation signal of the resolver and the estimated position, resulted from RDC, is discussed. The aim of this work is to find an appropriate excitation waveform that ensures the high accuracy operation of resolver beside the simple implementation possibility for RDC. Output analogue voltages are obtained using time stepping finite element analysis. Then, the amplitude modulated (AM) signals are imported to the MATLAB where two demodulation techniques are compared for calculating the voltages' envelope and the position error. Finally, experimental measurements validate the simulation results. © 2019 IEEE
  6. Keywords:
  7. Excitation Signal ; Resolver to Digital Converter (RDC) ; Time Stepping Finite Element Method (TSFEM) ; Wound-Rotor (WR) Revolver ; Code converters ; Frequency converters ; MATLAB ; Power electronics ; Synchronous generators ; Amplitude modulated ; Demodulation techniques ; Excitation signals ; Resolver-to-digital converters ; Sinusoidal voltage ; Time-stepping finite element method ; Time-stepping finite elements ; Wound rotors ; Finite element method
  8. Source: 10th International Power Electronics, Drive Systems and Technologies Conference, PEDSTC 2019, 12 February 2019 through 14 February 2019 ; 2019 , Pages 160-165 ; 9781538692547 (ISBN)
  9. URL: https://ieeexplore.ieee.org/document/8697277