Characteristics Measurement and FPGA Controller Design for an Air Motor and Electric Motor Hybrid Power System


This paper proposed an air-electric power hybrid system which utilizes a Field Programmable Gate Array (FPGA) controller to integrate two power systems together, one being the auxiliary power of an air motor and the other an electric power motor. The major task of air-electric power hybrid system is to extend the service life and reduce the change times of the batteries. Because the service life of the batteries is the crucial problem in electric vehicle development and it is related to the transportation distance, standing start or accelerating condition. With the auxiliary power, the batteries can avoid operating in the large discharge range and then promoting the safety. An air-electric power hybrid prototype platform is built with a FPGA controller and tested under the load condition. The testing results obtained by using the proposed two-power hybrid system indicate that the output current is 126A when the electric motor operating in standing start condition and the output current is 64A when the switching velocity is 1400 rpm. Hence, the reduction of the output current is about 49% and then the service life of the batteries can be greatly improved.

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