Journal
IEEE ACCESS
Volume 10, Issue -, Pages 81042-81053Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/ACCESS.2022.3195041
Keywords
Shafts; Voltage; Windings; Synchronous motors; Pulse width modulation; Permanent magnet motors; Induction motors; Bearing fault; common-mode voltage; dual three-phase motor; pulse width modulation inverter; shaft voltage
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Funding
- Industrial Strategic Technology Development Program of the Korea Evaluation Institute of Industrial Technology (KEIT) [20018442]
- Korea Institute for Advancement of Technology (KIAT) [P0017155]
- Korea Evaluation Institute of Industrial Technology (KEIT) [20018442] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- Ministry of Health & Welfare (MOHW), Republic of Korea [P0017155] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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This paper proposes a method of eliminating common-mode voltage (CMV) and shaft voltage in dual three-phase motors using the carrier phase shift of space vector pulse width modulation (SVPWM), and verifies the feasibility through experiments.
This paper proposes a method of eliminating common-mode voltage (CMV) and shaft voltage in dual three-phase motors using the carrier phase shift of space vector pulse width modulation (SVPWM). SVPWM for the dual three-phase motor is simply implemented using two traditional three-phase SVPWM structures. The representative work of the study is to eliminate the shaft voltage by applying the carrier phase shift method due to the cancellation of CMV. It was verified that the proposed method could reduce the shaft voltage with a simple technique, rather than applying a complex algorithm to reduce it. Also, the motor current and torque behaviors are analyzed to confirm that the proposed method does not affect the motor characteristics. The proposed method has been analyzed based on an equivalent circuit model and it has been verified through the experiment that the shaft voltage is simply eliminated by applying the proposed method.
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