Maximum efficiency tracking method based on parameter detection for ICPT systems

Xuerui Sheng; Liming Shi

Maximum efficiency tracking method based on parameter detection for ICPT systems

Xuerui Sheng

Liming Shi

Vol. 21, No. 9, pp. 1296-1308, Sep. 2021

10.1007/s43236-021-00270-4

Inductively coupled power transfer

Maximum efficiency tracking

Semi-controlled rectifier

Active shortcircuit

Abstract

Efficiency is very important in inductively coupled power transfer (ICPT) systems. To maintain a high efficiency, a maximum efficiency tracking (MET) method based on parameter detection is proposed in the paper. The basic idea is to convert the load value to the active short-circuit (ASC) time interval for the semi-controlled rectifier on the pick-up side. The ASC time interval and the transmitting coil current are detected to calculate the load and mutual inductance values on the transmitting side. According to the detected parameters, the output voltage of the high-frequency inverter that makes the system run at its maximum efficiency can be calculated and controlled. In addition, the load voltage is controlled by the high-frequency rectifier on the pick-up side. Simulation and experimental results show that this method can quickly achieve MET without wireless communication. Furthermore, the difference between the experimental maximum efficiency and the theoretical maximum efficiency is no more than 2%.

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Cite this article

[IEEE Style]

X. Sheng and L. Shi, "Maximum efficiency tracking method based on parameter detection for ICPT systems," Journal of Power Electronics, vol. 21, no. 9, pp. 1296-1308, 2021. DOI: 10.1007/s43236-021-00270-4.

[ACM Style]

Xuerui Sheng and Liming Shi. 2021. Maximum efficiency tracking method based on parameter detection for ICPT systems. Journal of Power Electronics, 21, 9, (2021), 1296-1308. DOI: 10.1007/s43236-021-00270-4.