Improved PWM Methods to Reduce the Common Mode Voltage of the Five-Phase Open-Winding Drive Topology

With the phase angle and shape modifications for carriers, two improved carrier-based pulse width modulation (CPWM) methods with common-mode voltage (CMV) suppression effects for the five-phase open-winding drive topologies are introduced. Theoretical analysis reveals that, by employing reversed tri...

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Bibliographic Details
Published in:Energies (Basel) 2022-09, Vol.15 (17), p.6382
Main Authors: Wang, Pengye, Liu, Zicheng, Jiang, Dong, Tian, Jie, Li, Peng
Format: Article
Language:English
Subjects:
carrier-based PWM
common mode voltage
Design
Electric potential
Induction electric motors
Induction motors
Inverters
Methods
multi-phase machine
Pulse duration modulation
Software
Theoretical analysis
Topology
Voltage
Winding
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Summary:With the phase angle and shape modifications for carriers, two improved carrier-based pulse width modulation (CPWM) methods with common-mode voltage (CMV) suppression effects for the five-phase open-winding drive topologies are introduced. Theoretical analysis reveals that, by employing reversed triangular carriers for two inverters under the carrier-reversed PWM (CRPWM), CMV contributions of two bridge legs belonging to the same phase can be cancelled, realizing the zero CMV effect. By dynamically employing positive and negative sawtooth carriers for all bridge legs under the carrier-switching PWM (CSPWM), the CMV contribution of each inverter can be reduced, decreasing both the amplitude and step frequency of the CMV. Current qualities and dead-time effects on CMV under the above PWM methods are analyzed. Moreover, performances of two PWM methods are verified by experiments implemented on a five-phase open-winding topology with the induction motor load.
ISSN:1996-1073
1996-1073
DOI:10.3390/en15176382