US 12,267,024 B2
AC-to-DC and DC-to-AC power conversion
Wenlong Qi, Hong Kong (CN); Sinan Li, Hong Kong (CN); Siew Chong Tan, Hong Kong (CN); and Shu Yuen Hui, Hong Kong (CN)
Assigned to VERSITECH LIMITED, Hong Kong (CN)
Appl. No. 17/434,463
Filed by VERSITECH LIMITED, Hong Kong (CN)
PCT Filed Mar. 10, 2020, PCT No. PCT/CN2020/078537
§ 371(c)(1), (2) Date Aug. 27, 2021,
PCT Pub. No. WO2020/182114, PCT Pub. Date Sep. 17, 2020.
Claims priority of provisional application 62/816,483, filed on Mar. 11, 2019.
Prior Publication US 2022/0140751 A1, May 5, 2022
Int. Cl. H02M 7/797 (2006.01)
CPC H02M 7/797 (2013.01) 17 Claims
OG exemplary drawing
 
1. A power converter circuit, comprising:
a direct current (DC) source or load;
a first passive network;
a first current switching network;
at least one floating capacitor;
a second current switching network;
a second passive network; and
an alternating current (AC) source or load;
wherein the first passive network is connected between the DC source or load and the first current switching network for linking the DC source or load and the first current switching network,
wherein the first current switching network is configured to operate in a plurality of states, including a first state which provides an interface between the DC source or load and the second passive network via a circuit path bypassing the at least one floating capacitor;
wherein the first current switching network comprises at least four serially linked switches for switching the power converter circuit between switching cycles;
wherein the at least four serially linked switches comprise at least two diodes and at least two metal-oxide-semiconductor field-effect transistor (MOSFET) switches; and
wherein one or more of the at least two diodes is connected to a corresponding MOSFET switch of the at least two MOSFET switches in a back-to-back arrangement.