Time:Oct 08, 2023 Views:991
There are two conventional connection methods between the components of the energy storage system - AC coupling or DC coupling. The difference lies in the path through which electricity is generated. Solar panels generate direct current, and electrical energy is also stored in solar cells in the form of direct current, but end users require alternating current. Therefore, power conversion is imperative and can be achieved through different paths. Regarding the strengths and weaknesses of each system,
Characteristics:
Including two inverters: solar inverter; Bidirectional inverter with battery
More flexibility
Easier to install, especially suitable for modification
Grid connected inverters can be retained to save costs
The system efficiency is low because the energy used by the battery undergoes multiple inverters (each stage of conversion causes more losses)
Suitable for modification (this method is more cost-effective, but only if there is an available photovoltaic system)
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