Abstract
The devious but steady increase in the price of petroleum along with concerns about emissions of greenhouse gases, presents renewable energy sources as promising solutions. So, either enterprises or research institutions zealously take part in new energy automobile development for more and more serious energy and environment problems. Whatever, variable and dynamic loads are required in order to satisfying variable working conditions in the electric vehicle (EV) experiments of the traffic. The scheme of power electronic impendence converter which adopts bi-direction DC-DC topology base on ultra-capacitor (UC) is brought forward to satisfy bi-direction power train in experiments. When UC is charged, the system is look upon as positive load. On the other hand, if UC is discharged, the system is look upon as negative load. Impendence converting can be implemented by controlling converter’s duty cycle and operating condition. Then, the load torque is simulated by changing the variable load’s value. At last, the experiments show that the scheme is feasible and cost-efficiency.
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