A Reactive Power Control Method of Inverter Based on Virtual Synchronization Mechanism
A virtual synchronization and power control technology, applied in reactive power compensation, reactive power adjustment/elimination/compensation, AC network voltage adjustment, etc. Take advantage of reactive power and other issues to achieve the effects of reducing reactive power response time, slowing down the trend of voltage drop, and improving reactive power utilization
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[0025] The present invention will be described in more detail below in conjunction with the accompanying drawings.
[0026] The invention is a reactive power control method of an inverter based on a virtual synchronous mechanism. The reactive power control mode is divided into three types: a reactive power control mode, a voltage control mode and a low voltage ride-through control mode. The three control modes are independent of each other, do not interfere with each other, and can be switched freely. When the LVRT control module detects that the grid-connected point voltage is normal, the reactive power control module controls the inverter to output reactive power to the set value; when the LVRT control module detects that the grid-connected point voltage drops, the reactive power control module controls the grid-connected point voltage to the set value Fixed value to prevent or slow down the voltage drop; when the LVRT control module detects that the voltage at the grid-conn...
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