METHODS AND SYSTEMS FOR DYNAMIC CONTROL OF REACTIVE POWER

摘要

A system for controlling reactive power may comprise a power stage circuit and a controller configured to operate the power stage circuit to provide reactive power to a utility grid. The power stage circuit may comprise a grid frequency rectifier, a high frequency inverter connected to the grid frequency rectifier, and an energy storage device connected to the high frequency inverter. The controller maybe configured to operate switches in the grid frequency rectifier in synchronization with zero crossings of a grid voltage of the utility grid, and operate the high frequency inverter in duty cycle modulation.