Inventor

WEI LIXIANG

US103 patents

⚠️ This page may combine multiple inventors who share the name “WEI LIXIANG”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

WEI LIXIANG

ROCKWELL AUTOMATION TECH INC

Pulse width modulation (PWM) rectifier with variable switching frequency

Junction temperature prediction method and apparatus for use in a power conversion module

Method and apparatus including multi-drive configurations for medium voltage loads

Common voltage reduction for active front end drives

Power electronic module pre-charge system and method

Method and apparatus for bypassing cascaded H-bridge (CHB) power cells and power sub cell for multilevel inverter

Power module life estimation fatigue function

Junction temperature reduction for three phase inverters modules

Compensator with filter for use with a three-phase drive powering a one-phase load

Auxiliary circuit for use with three-phase drive with current source inverter powering a single-phase load

Rectifier for reducing current harmonics from unbalanced source

Power conversion system with PWM carrier emulation

Adjustable PWM method to increase low speed starting torque and inverter voltage measurement accuracy

Electric motor drive employing hybrid, hysteretic/pulse-width-modulated dynamic braking

Bootstrap charging by PWM control

Double fed induction generator (DFIG) converter and method for improved grid fault ridethrough

Precharge apparatus for power conversion system

Method to implement drive diagnostics and prognostics automatically

Power conversion system and filter therefor

Converter lifetime improvement method for doubly fed induction generator

Motor drive filter damping

Power cell bypass method and apparatus for multilevel inverter

Power converter and integrated DC choke therefor

System and method for controlling input line harmonics in a motor drive

WEI LIXIANG

DC bus boost method and system for regenerative brake

Power cell bypass method and apparatus for multilevel inverter

Fault identification techniques for high resistance grounded systems

Methods and apparatus for continuous and discontinuous active rectifier boost operation to increase power converter rating

Multifunction power converter with option for integrated magnetics

Power converter and integrated DC choke therefor

Ground scheme identification method

Methods and power conversion system control apparatus to control IGBT junction temperature at low speed

Apparatus and method for energy efficient motor drive standby operation

System for detection of a ground fault in a high resistance ground network

Power electronic module IGBT protection method and system

Converter lifetime improvement method for doubly fed induction generator

Power transformer and power converter incorporating same

DC bus clamp circuit to prevent over voltage failure of adjustable speed drives

LU HAIHUI

Wind power converter system with grid side reactive power control

Double fed induction generator (DFIG) converter and method for improved grid fault ridethrough

Double fed induction generator converter and method for suppressing transient in deactivation of crowbar circuit for grid fault ridethrough

WEISS BRUCE W

DC pre-charge circuit

AC pre-charge circuit

WISCONSIN ALUMNI RES FOUND

Dual bridge matrix converter

SARTLER CHRISTIAN

Filter capacitor degradation identification using measured and expected voltage

XIAO YUAN

Drive failure protection

PATEL YOGESH

Active front end power converter with boost mode derating to protect filter inductor

AHMED AHMED MOHAMED SAYED

Single phase operation of a three-phase drive system

YUAN ZHENHUAN

Method and apparatus for islanding detection for grid tie converters

VRANKOVIC ZORAN V

Method and apparatus for detecting a location of ground faults in a motor/motor drive combination