CPC H02J 50/12 (2016.02) [H01F 38/14 (2013.01); H02J 7/00712 (2020.01); H02M 3/33523 (2013.01); H02M 3/33576 (2013.01); H02M 3/3372 (2013.01); H02J 50/60 (2016.02); H02J 50/90 (2016.02); Y02B 70/10 (2013.01)] | 38 Claims |
1. A wireless power transfer apparatus suitable for magnetic coupling with a second apparatus, the wireless power transfer apparatus comprising:
a power converter electrically coupled or coupleable with a power source or load;
a resonant circuit electrically coupled with the power converter and comprising a magnetic coupler for magnetic coupling with the second apparatus; and
a controller associated with the power converter and configured to vary a relative phase of operation of the power converter with respect to the second apparatus, the phase being varied to at least partially compensate for variations in a reactive impedance,
wherein the wireless power transfer apparatus is configured to compensate for changes in the inductance of the magnetic coupler caused by misalignment of the magnetic coupler relative to the second apparatus.
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