Modeling and Analysis of Leakage Currents in PWM-VSI-Fed PMSM Drives for Air-Conditioners with High Accuracy and within a Wide Frequency Range

Kai Sun; Yangjun Lu; Yan Xing; Lipei Huang

Modeling and Analysis of Leakage Currents in PWM-VSI-Fed PMSM Drives for Air-Conditioners with High Accuracy and within a Wide Frequency Range

Vol. 16, No. 3, pp. 970-981, May 2016

10.6113/JPE.2016.16.3.970

Air-conditioner

Leakage current

Modeling

Permanent magnet synchronous motor (PMSM)

Pulse-width-modulated voltage source inverter (PWM-VSI)

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Abstract

Leakage currents occur in pulse-width-modulated voltage source inverter (PWM-VSI)-fed permanent magnet synchronous motor (PMSM) drives for air-conditioners, which seriously affect system safety and operation performance. High accuracy modeling and prediction of leakage currents are key issues for the design and implementation of air-conditioning products. In this study, the generation mechanism of leakage currents is discussed. A systematic modeling approach of leakage currents is proposed, including the modeling of leakage current sources and leakage current paths. By using the proposed approach, the complete model of leakage currents in PWM-VSI-fed PMSM drives for air-conditioners has been developed based on the extraction of all parameters. A comparison between the simulated leakage currents based on the developed model and measured leakage currents in the outdoor unit of an air-conditioning product is conducted. The comparison verifies the effectiveness of the proposed modeling approach, and the developed model exhibits high accuracy within a wide frequency range.

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Cite this article

[IEEE Style]

K. Sun, Y. Lu, Y. Xing, L. Huang, "Modeling and Analysis of Leakage Currents in PWM-VSI-Fed PMSM Drives for Air-Conditioners with High Accuracy and within a Wide Frequency Range," Journal of Power Electronics, vol. 16, no. 3, pp. 970-981, 2016. DOI: 10.6113/JPE.2016.16.3.970.

[ACM Style]

Kai Sun, Yangjun Lu, Yan Xing, and Lipei Huang. 2016. Modeling and Analysis of Leakage Currents in PWM-VSI-Fed PMSM Drives for Air-Conditioners with High Accuracy and within a Wide Frequency Range. Journal of Power Electronics, 16, 3, (2016), 970-981. DOI: 10.6113/JPE.2016.16.3.970.