Silicon carbide is enabling a global shift to embedded industrial low voltage motor drives where the drive and motor are combined into one unit, resulting in smaller, lower cost and more efficient industrial drives. To support this shift, Wolfspeed evaluated three different power rated drives (4 kW, 11 kW, and 25 kW), replacing traditional silicon IGBTs with silicon carbide MOSFETs and diodes and measured the energy efficiency improvements. Efficiency improvements were also observed when designers reduced the size of heat sinks and passive components, demonstrating the ability of SiC in reducing the system’s physical size and mass.
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