Patent ID: 11870335
Assignee: BEIJING INSTITUTE OF TECHNOLOGY
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 6:
7. The WPT system regulation system for implementing ZVS in a wide power range according to claim 6, wherein the optimal switching frequency determining module specifically comprises:
a phase-shift angle calculation unit configured to: for each expected output voltage of the WPT system, calculate, by using a Kirchhoff's voltage law, a phase-shift angle corresponding to each frequency that meets the expected output voltage in the frequency variation range of the frequency modulation method;
a second curve plotting unit configured to determine a curve, corresponding to each expected output voltage, of the minimum absolute value that is of the current of the inductor in the primary-side resonance compensation network and that varies with a frequency; and
an optimal switching frequency determining unit configured to determine an optimal switching frequency according to curves corresponding to all expected output voltages, wherein at the optimal switching frequency in all frequencies, a maximum quantity of minimum absolute values that are of the current of the inductor in the primary-side resonance compensation network and that are greater than 0 is obtained.