US 12,003,114 B2
Series/series resonant topology for wireless power transfer
Keyao Sun, Blacksburg, VA (US); Jun Wang, Blacksburg, VA (US); Rolando Burgos, Blacksburg, VA (US); and Dushan Boroyevich, Blacksburg, VA (US)
Assigned to VIRGINIA TECH INTELLECTUAL PROPERTIES, INC., Blacksburg, VA (US)
Filed by VIRGINIA TECH INTELLECTUAL PROPERTIES, INC., Blacksburg, VA (US)
Filed on Jun. 26, 2020, as Appl. No. 16/913,066.
Prior Publication US 2021/0408923 A1, Dec. 30, 2021
Int. Cl. H02J 50/12 (2016.01); H02M 7/5387 (2007.01)
CPC H02J 50/12 (2016.02) [H02M 7/5387 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A wireless power transfer (WPT) system comprising:
a compensation network for reducing reactive power in the WPT system, the compensation network comprising:
a series/series (S/S) constant current (CC) source comprising a transformer and a S/S compensation network for the transformer, the S/S compensation network consisting of a first compensation capacitor and a second compensation capacitor, the first compensation capacitor being connected in series with a first inductor on a primary side of the transformer and the second compensation capacitor being connected in series with a second inductor on a secondary side of the transformer, the first compensation capacitor, the first inductor and a mutual inductance of the transformer configured for resonant operation at a defined frequency, the S/S CC source converting an input voltage signal of the WPT system into a constant alternating current (AC) current signal at the defined frequency; and
a constant current (CC)-to-constant voltage (CV) network comprising at least a third capacitor and a third inductor, the CC-to-CV network configured for resonant operation at the defined frequency, the CC-to-CV network converting the constant AC current signal into a constant AC voltage signal at the defined frequency.