| CPC H02M 1/32 (2013.01) [H02M 1/08 (2013.01); H02M 3/33569 (2013.01)] | 20 Claims |
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1. A method comprising:
generating, by a control circuit, a first gate drive signal to initiate operation of an LLC resonant power converter at a first frequency, wherein, during operation, the LLC resonant power converter is configured to:
drive a wireless power signal at a primary winding of a rotary power transformer disposed on a first platform;
transmit the wireless power signal across a gap separating the first platform and a second platform, wherein the second platform is configured to rotate relative to the first platform;
receive the wireless power signal at a secondary winding of the rotary power transformer, wherein the secondary winding is disposed on the second platform; and
operate, in an open loop mode without feedback control, a device mounted on the second platform based on the secondary winding receiving the wireless power signal; and
generating, by the control circuit and in response to satisfaction of a condition, a second gate drive signal to operate the LLC resonant power converter at a second frequency that is lower than the first frequency.
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