Planar Transformer Systems for Modular Power Electronics in Long-Haul, Low-Cost PV Systems-Mike K. Ranjram Title: Assistant Professor-Arizona State University

 

Planar Transformer Systems for Modular Power Electronics in Long-Haul, Low-Cost PV Systems Mike K. Ranjram Title: Assistant Professor-Arizona State University

 Background The aim of this project is to develop and verify a new approach to designing medium-voltage (MV) planar transformers for emerging, utility-scale, modular PV systems. This approach considers these MV planar transformers as systems rather than as components. This means they can comprise multiple individual magnetic cores and printed circuit boards (PCBs) which can be distinctly organized both electrically and physically to achieve maximum performance. Central to this approach is that lowcomplexity winding stack-ups are leveraged which simplify primary-to-secondary insulation requirements, mitigate the need for interleaved windings, and aid in streamlining manufacturing and greatly reducing cost. Additionally, these systems dramatically expand the available material choices for the PCB by significantly reducing their required dielectric strength. This is a key driver of low-cost PCBs and mitigates sensitivity to supply chain changes in any particular material. The three key aspects of a medium voltage planar transformer in a solar PV application are its: (1) isolation capability, (2) cost, and (3) loss. This project comprehensively explores each of these three facets and we ultimately advance planar transformers having higher isolation capability, much lower cost, and lower loss than the state-of-the-art, at a comparable and lower volume. In this section, we provide background on each of these three key facets of the design.

VIEW FULL PAPER:https://www.osti.gov/servlets/purl/2452814