Construction of Grid-Tied System for PV using Universal Smart Power Module

In recent years, the realization of an energy system that uses renewable energy as the main power source is being considered toward carbon neutrality. Authors are developing a low-cost, highly functional, and versatile Universal Smart Power Module (USPM) to adapt to various power electronics system. In this paper, a power conversion system using multiple USPMs is verified as a Grid-Tied system for PV generation, which consists of a USPM master controller, USPM slave inverter unit, USPM slave chopper1 unit, USPM slave chopper2 unit and equipment housing. Three phase grid-tied inverter was experimentally verified to confirm the USPM controller capability. A demonstration was carried out with a PV simulator, an energy storage battery, and a utility voltage simulator. Slave USPM controller controls its own USPM module. All the slave controllers communicate with the master controller via CAN network to operate the sequence control. Basic function of the proposed system was confirmed.