Network construction type energy storage converter pre-synchronization control method based on virtual instantaneous power
The invention discloses a virtual instantaneous power-based pre-synchronization control method for a network construction type energy storage converter. The network construction type energy storage converter comprises an energy storage battery, a direct current side capacitor, a three-level inverter...
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Main Authors | , , , , , |
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Format | Patent |
Language | Chinese English |
Published |
12.05.2023
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Subjects | |
Online Access | Get full text |
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Summary: | The invention discloses a virtual instantaneous power-based pre-synchronization control method for a network construction type energy storage converter. The network construction type energy storage converter comprises an energy storage battery, a direct current side capacitor, a three-level inverter, an alternating current filter and a controller, in the grid-connected/off-grid mode switching process of the grid-forming type energy storage converter, virtual instantaneous power is constructed to generate compensation amount of voltage difference between the grid-forming type energy storage converter and an alternating current power grid, and voltage synchronization at two ends of a grid-connected point is ensured, so that the grid-forming type energy storage converter can smoothly switch an operation mode under the condition of no impact current; the invention further provides a non-linear variable integral coefficient control method based on the grid-connected voltage difference, power impact of a pre-synchr |
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Bibliography: | Application Number: CN202211536724 |