Search Results - chao+fei

3 Results Sort By:
Matrix Transformer and the Winding Structure
A novel matrix transformer structure along with its winding structure are proposed. 4 transformers are integrated in 1 core and flux cancellation is employed to reduce the flux density in the top and bottom plates of the magnetic core. The primary windings are arranged to fully utilize the copper in the PCB. SR and output are part of the secondary winding...
Published: 2/8/2017   |   Inventor(s): Chao Fei, Fred Lee, Qiang Li
Keywords(s):  
Category(s): Electrical
Adaptive SR Driving Scheme for Resonant Converter
In this invention, adaptive SR driving for resonant converter using ripple counter concept is proposed. With the proposed method, SR drain to source voltage Vds is sensed to detect the body diode conduction and SR is well tuned to eliminate the body diode conduction within all operation regions of resonant converter in different applications. Tow control...
Published: 3/30/2015   |   Inventor(s): Chao Fei, Fred Lee, Weiyi Feng, Qiang Li
Keywords(s):  
Category(s): Electrical, Energy, Engineering
Multi-Step Simplified Optimal Trajectory Control (SOTC) Based on Only VO and ILoad
In this invention, multi-step Simplified Optimal Trajectory Control (SOTC) based on only VO and ILoad is proposed to solve the challenges in the control of resonant converter. The main concept involved in this invention is that adaptive multi-step SOTC based on controller's performance is employed to settle resonant tank. The proposed method has a very...
Published: 2/27/2015   |   Inventor(s): Chao Fei, Fred Lee, Weiyi Feng, Qiang Li
Keywords(s):  
Category(s): Electrical, Energy, Engineering