A Power Regulation and Harmonic Current Elimination Approach for Parallel Multi-Inverter Supplying IPT Systems


Vol. 16, No. 4, pp. 1245-1255, Jul. 2016
10.6113/JPE.2016.16.4.1245


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 Abstract

The single resonant inverter is widely employed in typical inductive power transfer (IPT) systems to generate a high-frequency current in the primary side. However, the power capacity of a single resonant inverter is limited by the constraints of power electronic devices and the relevant cost. Consequently, IPT systems fail to meet high-power application requirements, such as those in rail applications. Total harmonic distortion (THD) may also violate the standard electromagnetic interference requirements with phase shift control under light load conditions. A power regulation approach with selective harmonic elimination is proposed on the basis of a parallel multi-inverter to upgrade the power levels of IPT systems and suppress THD under light load conditions by changing the output voltage pulse width and phase shift angle among parallel multi-inverters. The validity of the proposed control approach is verified by using a 1,412.3 W prototype system, which achieves a maximum transfer efficiency of 90.602%. Output power levels can be dramatically improved with the same semiconductor capacity, and distortion can be effectively suppressed under various load conditions.


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Cite this article

[IEEE Style]

R. Mai, Y. Li, L. Lu, Z. He, "A Power Regulation and Harmonic Current Elimination Approach for Parallel Multi-Inverter Supplying IPT Systems," Journal of Power Electronics, vol. 16, no. 4, pp. 1245-1255, 2016. DOI: 10.6113/JPE.2016.16.4.1245.

[ACM Style]

Ruikun Mai, Yong Li, Liwen Lu, and Zhengyou He. 2016. A Power Regulation and Harmonic Current Elimination Approach for Parallel Multi-Inverter Supplying IPT Systems. Journal of Power Electronics, 16, 4, (2016), 1245-1255. DOI: 10.6113/JPE.2016.16.4.1245.