Parallel structure PCS to prevent system shut down due to Power Stack failure
PCS applied to existing ESS consists of 2Stage structure composed of DC/DC converter and inverter.
In case of the existing structure, if a part of the switching element of DC/DC converter and inverter breaks down, the entire ESS system of is shut down.
In the case of DC/DC converter, secure ESS charge/discharge Redundancy through the development of converters that can be driven when there is a failure in some of the power switching element constituting converter
Secure the redundancy of ESS charge/discharge PCS through system configuration that can cope with 50% output, in case of 1stack failure due to the parallel structure design of inverter
DC/DC converter reduces current ripple by using a 4-Leg method, and secures high efficiency of converter by reducing switching loss.
Application of multilevel inverter for THD reduction of inverter connected with system.