SLLA498 October 2020
The ultimate choice of a power topology boils down to the intended use case of that specific power converter block, namely the input and output parameters, the targeted power levels, efficiency and power density targets to name a few. While high power 3-phase commercial inverters would look at complex multilevel three-phase PFC stage and DC-DC stage to pack more-and-more power into them, the single phase residential inverters could be addressed by a simple 2-level H-bridge type PFC stage followed by a LLC DC/DC stage. With storage ready inverters becoming more commonplace, engineers may have to limit their Inverter and DC/DC topology choices to those that support bidirectional power transfer (such as TNPC, ANPC, DAB, and CLLLC between the local battery pack and the Grid.
No matter your choice of use case, the advancement in the field of power electronics in tandem with semiconductor technology is ready to offer everything you need to build your next generation storage ready solar inverter or a stand-alone energy storage system.