Patents & Certificates

A kind of whole Zhang Fangfa of card-less rotary cutter tailgate

Control method, system and equipment for high-voltage brushless dual-feeder and readable storage medium

Excitation shaft generator system start-stop logic control circuit and excitation shaft generator system

Tower-type pumping unit and frequency converter, control method and storage medium thereof

Method, device and system for compensating weighing-free starting torque of elevator

A kind of asynchronous machine identification method for offline static parameter and its device

Communication protocol conversion card

IGBT parameter identification method, dead zone compensation method and inversion device

Oscillation suppression method, system, device and readable storage medium

Method and system for detecting DC bias of output current of frequency inverter

Motor control method and device (GD5000)

Multi-drive frequency inverter (GD600)

Phase current reconstruction method and device (GD10)

Codec method, related device and codec system (GD800)

Harmonic detection method and related device (iSVG)

Voltage equalization protection circuit and diode clamp multilevel topology device (GD3000)

Calibration and driving method and device of photovoltaic inverter (Solar Inverter)

The method of parameter identification and implementation system for Synchronous motor inductance (GD300-01/GD800/GD3000)

The method of parameter identification and implementation system for Synchronous motor inductance (GD300)