I new to grid tied converter operation and i have read in some literature that BESS can provide reactive power through control of the converter. I have done this in my simulation but would like why this is possible?
to find the answer to your question , you can consult this link
https://www.adelaide.edu.au/energy-storage/docs/aeskb-case-study-2-power-factor-control-with-a-bess.PDF
A battery energy storage system (BESS) equipped with a suitably advanced inverter can perform reactive power control in addition to active power control. This allows a battery energy storage system to also provide reactive power support to the grid, and power factor control of loads when deployed in a microgrid.
Reactive power provides no useable power, but increases the load on the power system and reduces the amount of real, useful power that can be delivered. These concepts are explored with the aid of the power triangle, P-Q unit circle, and real waveforms.
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