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A Power Regulation and Harmonic Current Elimination Approach for Parallel Multi-Inverter Supplying IPT Systems
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  • Journal title : Journal of Power Electronics
  • Volume 16, Issue 4,  2016, pp.1245-1255
  • Publisher : The Korean Institute of Power Electronics
  • DOI : 10.6113/JPE.2016.16.4.1245
 Title & Authors
A Power Regulation and Harmonic Current Elimination Approach for Parallel Multi-Inverter Supplying IPT Systems
Mai, Ruikun; Li, Yong; Lu, Liwen; He, Zhengyou;
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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.
 Keywords
Inductive power transfer (IPT);Parallel multi-inverter;Power regulation;Selective harmonic elimination;
 Language
English
 Cited by
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