US 12,273,019 B2
Controller for a power converter having an inverter frequency controlled by a switch control signal
Russell Jacques, Shatin (HK); David Coulson, Shatin (HK); and Niek van der Duijn Schouten, Shatin (HK)
Assigned to REDISEM LTD., Shatin (HK)
Appl. No. 17/905,596
Filed by REDISEM LTD., Shatin (CN)
PCT Filed Mar. 4, 2020, PCT No. PCT/CN2020/077818
§ 371(c)(1), (2) Date Sep. 2, 2022,
PCT Pub. No. WO2021/174453, PCT Pub. Date Sep. 10, 2021.
Prior Publication US 2023/0113700 A1, Apr. 13, 2023
Int. Cl. H02M 3/335 (2006.01); H02M 1/00 (2006.01); H05B 45/305 (2020.01); H05B 47/24 (2020.01)
CPC H02M 1/0058 (2021.05) [H02M 1/0009 (2021.05); H02M 3/33507 (2013.01); H05B 45/305 (2020.01); H05B 47/24 (2020.01)] 17 Claims
OG exemplary drawing
 
1. A controller for a power converter, the power converter comprising:
an inverter for receiving a supply power and providing an inverter output at an inverter frequency;
a primary inductance for receiving the inverter output and providing a primary output;
at least one current sensor for sensing at least one output current and providing at least one output current signal based on the at least one output current;
a main winding for receiving the primary output;
an auxiliary winding for providing an auxiliary power supply wherein said auxiliary winding is selected from a group including a first auxiliary winding inductively coupled to the main winding and a second auxiliary winding inductively coupled to the primary inductance;
the controller that:
receives the at least one output current signal;
controls the inverter frequency by providing a switch control signal to the inverter based on the at least one output current signal and a reference signal thereby providing a desired primary output corresponding to the reference signal; and
receives the auxiliary power supply from the auxiliary winding.