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. Author manuscript; available in PMC: 2021 May 26.
Published in final edited form as: IEEE Open J Power Electron. 2021 Mar 30;2:225–235. doi: 10.1109/ojpel.2021.3069780

TABLE 1.

Three-step Test Approach for Partial Discharge Study

Test step Studied Parameters
Single pulse tests

  • Voltage rise/fall time (trf)

  • Voltage pulse width (tw)
Repetitive pulse tests

  • Voltage pulse repetitive rate (fsw)

  • Duty ratio (d)

  • Voltage polarity (unipolar or bipolar)
Sine-PWM pulse tests

  • Fundamental frequency (fac)

  • Modulation index (Ma)