Device and method for controlling a load flow in an alternating-voltage network

System and method for distributed grid control with sub-cyclic local response capability

MODULAR, SCALABLE, MULTI-FUNCTION, POWER QUALITY SYSTEM FOR UTILITY NETWORKS

Power control circuit and method for stabilizing a power supply

Control method of a virtual generator

System and method for distributed grid control with sub-cyclic local response capability

Unified power flow controller utilizing energy saving devices at a point of power consumption

AC network power flow control

Voltage adjusting apparatus

Method and apparatus for controlling low voltage ride through of photovoltaic grid-connected inverter

Method and device for controlling a multilevel converter

Method and apparatus for power plant dynamic var regulation and transient stability improvement

Power compensator

Modular, scalable, multi-function, power quality system for utility networks

Transformer-less unified power flow controller

Coordinated control method of generator and SVC for improving power throughput and controller thereof

Controlling method and system for supporting active power factor correction loads

Power flow control apparatus

Regenerative voltage doubler rectifier, voltage sag/swell correction apparatus and operating methods

Distributed power supply system

System and method for Var injection at a distributed power generation source

Uninterruptible power system

UPS system and method of supplying power to non-linear load

Grid-interactive photovoltaic generation system with power quality control and energy saving