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Low cost integrated motor-controller drive for an electrical active suspension system

This paper presents an electrical drive designed for an electrical active suspension system with motor, pump wheel and power electronics integrated in the same housing, sharing the same cooling method. The proposed drive is designed for the new 48V automotive standard for auxiliary drives having a maximum load of 2.5kW. The necessary mechanical and electrical requirements for the complete drive are documented. Design guidelines are presented for the integrated power electronics and motor drive and verified through experimental results. Thermal simulations are conducted to support the thermal design of the system.