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Project in Mechatronics February 2008 Double Aux Drive • Hybrid vehicles -> Electric auxilliaries • Several of these used intermittently • Can be combined, like air compressor and A/C compressor. One motor drive only needed. • Benefit: - Lower system cost, higher system efficiency. Double Aux Drive • Goal: • To design a combined electrically driven A/C and Air compressor system with an energy optimization strategy. Aux Connector for a hybrid vehicle • The hybrid vehicle electric power system has at least two voltage levels, 12/24 V and the traction voltage (e.g 300 V). • The 12/24 V system is chassis ground. • The traction voltage is floating. • There is a DC/DC converter in between. • Aux loads can be connected to both the 12/24 V and the traction voltage. Aux Connector • Goal: • Design two connectors, one for the 12/24 V and one for the traction voltage, that guarantees safe connection ofxternal auxilliaries. A sensing ciruit, earth fault detection and mechanical design should be employed. A/C system