Inventor

LI HUAQIANG

US42 patents

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

LI HUAQIANG

EATON INTELLIGENT POWER LTD

Mitigation of harmonic disturbances in a power converter

Fault tolerant motor and zone controller apparatus

System and method for compact motor control with redundant power structures

Adjustable speed drive with integrated solid-state circuit breaker and method of operation thereof

Determining an initial position of a rotor of a permanent magnet synchronous machine

Hybrid drive apparatus

Protection of an electrical apparatus

Protection of an electrical apparatus

Active harmonic filter and regenerating energy control apparatus and method of operation

Soft-starter AC-AC converter with integrated solid-state circuit breaker and method of operation thereof

System and method for compact motor control with redundant power structures

Drive system with common DC bus

Adjustable speed drive with integrated solid-state circuit breaker and method of operation thereof

Adjustable speed drive with integrated solid-state circuit breaker and method of operation thereof

Determining an initial position of a rotor of a permanent magnet synchronous machine

Matrix converter with solid state circuit breaker

Motor control system with integrated solid-state contactor and relays and method of operation thereof

Motor control device with solid state circuit breaker

EATON CORP

System and method for single-phase and three-phase current determination in power converters and inverters

System and method for operating a three-phase load from a single phase source

System and method for intelligent circuit breaking in adjustable speed drives

System and method of rotor time constant online identification in an AC induction machine

Board-level motor control system with integrated protection and control components

Variable frequency drive circuit with overvoltage protection

System and method for stability control in adjustable speed drive with DC link thin film capacitor

System and method for controlling output flow of parallel connected blowers

System and method for consistent speed regulation in a variable frequency drive

System and method of rotor time constant online identification in an AC induction machine

System for determining a magnetizing curve and rotor resistance of an induction machine and method of making same

System and method for controlling regenerating energy in an adjustable speed drive

Dynamic performance and active damping methods in web winder tension control systems

System and method for controlling regenerating energy in an adjustable speed drive

System and method for capacitor fault energy interruption in adjustable speed drives

LI HUAQIANG

System and method for high resistance ground fault detection and protection in power distribution systems

System and method for detecting phase loss and diagnosing DC link capacitor health in an adjustable speed drive

System and method for ground fault detection and protection in adjustable speed drives

HARRISON MICHAEL JOHN

Feed forward control for a cyclo-converter

Power factor control of a cyclo-converter

Closed loop control of a cyclo-converter

FAMILIANT YAKOV LVOVICH

System for optimizing switching dead-time and method of making same

Methods and apparatus for determining power distribution system topology using disturbance detection

UNIV INNER MONGOLIA TECHNOLOGY

Device for surface strengthening of metal plate based ultrasonic vibration