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Ultracapacitor-Based Auxiliary Energy System for Construction Machinery

机译:基于超级电容器的工程机械辅助能源系统

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摘要

Regenerative braking is an effective approach for construction machinery to extend their driving range. In the system, an ultracapacitor is preferred for high power buffer and regenerative braking energy storage because it has the advantages of high power density, long life cycles, and high efficiency. Bidirectional dc-dc converters for the automotive applications typically are limited to generate only a small voltage ripple, especially when the ultracapacitor with a limited ripple current capability is interfaced by the converter. This paper presented an ultracapacitor-based energy storage system design for motor hoist. In order to provide constant input and output current for the ultracapacitor, this design uses a double proportional-integral (PI) control strategy in regulating the duty cycle of Pulse Width Modulation (PWM) to the DC/DC converter. The simulation experiment proved the correctness of theoretical analysis.
机译:再生制动是工程机械扩展其行驶范围的有效方法。在该系统中,超级电容器是高功率缓冲器和再生制动能量存储的首选,因为它具有高功率密度,长寿命和高效率的优点。汽车应用中的双向DC-DC转换器通常仅限于产生很小的电压纹波,特别是当转换器连接了具有有限纹波电流能力的超级电容器时。本文提出了一种基于超级电容器的电动葫芦储能系统设计。为了给超级电容器提供恒定的输入和输出电流,此设计使用双比例积分(PI)控制策略来调节DC / DC转换器的脉宽调制(PWM)的占空比。仿真实验证明了理论分析的正确性。

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