Road Load Simulator Tests of the Gould Phase I Functional Model Silicon Controlled Rectifier Ac Motor Controller for Electric Vehicles
U.S. Department of Energy, Office of Vehicle and Engine R&D, 1984 - Electric controllers - 68 pages
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600 Motor speed ac motor controller ac propulsion battery current battery power battery simulator supply battery terminal voltage capacitor characteristic of motor constant motor speeds constant motor torque controller and motor cruise region current as function curve in figure Direct current drag coefficient driving cycle dynamic tests efficiency as function electric vehicles function of motor functional model controller horsepower Hybrid Vehicle inverter module J227a schedule km/hr 55 mph Lewis Research Center motor controller efficiency motor current motor operation Motor shaft power motor voltage NASA overall gear ratio parameters phase I functional power as function power inverter PWM operating quasi-square wave operation rad/sec Figure regeneration mode regenerative braking road load simulator SAE-J227a schedule schedule D cycle schedule D driving sec Figure shown in figure silicon controlled rectifier slip frequency speed for constant Steady state characteristic Steady state tests tachometer test results tests were run thermal transaxle vehicle speed wattmeter waveform