为提升电力机车制动产生的大量再生制动能量的回收利用率,同时兼顾补偿单相牵引供电系统在电网中引起的电压不平衡问题,本文提出了一种基于YNd变压器-多端口变换器的铁路混合储能系统(YNd-multiport converter based railway hybrid ene...为提升电力机车制动产生的大量再生制动能量的回收利用率,同时兼顾补偿单相牵引供电系统在电网中引起的电压不平衡问题,本文提出了一种基于YNd变压器-多端口变换器的铁路混合储能系统(YNd-multiport converter based railway hybrid energy storage system,YNd-MC-RHESS)。首先,分析了YNd-MC-RHESS的工作原理及其工作模式。其次,以提高再生制动能量的利用率为主要目标,基于非线性电流控制,提出了多端口变换器的功率优化调控策略,在交流/直流(AC/DC)变换器中引入非线性控制,提升了多端口变换器的响应速度与混合储能的能量分配效率。最后,基于典型工况,通过半实物动态模拟验证了所提控制策略可以调度功率在不同端口间按需转移,同时不同介质储能功率可合理分配与存储释放。实验结果表明,混合储能装置投入后,再生制动能量的利用率为93.67%,实现了再生制动能量的高效利用。展开更多
Braking on low adhesion-coefficient roads, hybrid electric vehicle＇s motor regenerative torque is switched off to safeguard the normal anti-lock braking system （ABS） fimction. When the ABS control is terminated, th...Braking on low adhesion-coefficient roads, hybrid electric vehicle＇s motor regenerative torque is switched off to safeguard the normal anti-lock braking system （ABS） fimction. When the ABS control is terminated, the motor regenerative braking is readmitted. Aiming at avoiding permanent cycles from hydraulic anti-lock braking to motor regenerative braking, a novel electro-mechanical hybrid anti-lock braking system using fuzzy logic is designed. Different from the traditional single control structure, this system has a two-layered hierarchical structure, The first layer is responsible for harmonious adjustment or interaction between regenerative system and anti-lock braking system. The second layer is responsible for braking torque distribution and adjustment. The closed-loop simulation model is built. Control strategy and method for coordination between regenerative and anti-lock braking are developed. Simulation braking on low adhesion-coefficient roads with fuzzy logic control and real vehicle braking field test are presented. The results from simulating analysis and experiment show braking performance of the vehicle is perfect, harmonious coordination between regenerative and anti-lock braking function, significant amount of braking energy can be recovered and the proposed control strategy and method are effective.展开更多
Hydraulic hybrid vehicles （HHV） with secondary regulation technology has the potential of improving fuel economy by operating the engine in the optimum efficiency range and making use of regenerative braking. Hydros...Hydraulic hybrid vehicles （HHV） with secondary regulation technology has the potential of improving fuel economy by operating the engine in the optimum efficiency range and making use of regenerative braking. Hydrostatic transmission technology has the advantage of higher power density and the ability to accept the high rates and high frequencies of charging and discharging, both of which are not favorable for batteries, but the lower energy density requires special power matching design and control strategy to coordinate all the powertrain components in an optimal manner. A multi-objective optimization method is proposed to distinguish the components size values of HHV by considering the requirements of driving cycles and technology aspects. The regenerative braking strategy and energy control strategy based on the optimized HHV is proposed to recovery the braking energy and distribute the regenerated braking energy. Simulation results show that by taking the optimized configuration of HHV, adopting the regenerative braking strategy and energy control strategy are helpful to improve the system efficiency and fuel economy of HHV under urban driving cycles.展开更多
文摘为提升电力机车制动产生的大量再生制动能量的回收利用率,同时兼顾补偿单相牵引供电系统在电网中引起的电压不平衡问题,本文提出了一种基于YNd变压器-多端口变换器的铁路混合储能系统(YNd-multiport converter based railway hybrid energy storage system,YNd-MC-RHESS)。首先,分析了YNd-MC-RHESS的工作原理及其工作模式。其次,以提高再生制动能量的利用率为主要目标,基于非线性电流控制,提出了多端口变换器的功率优化调控策略,在交流/直流(AC/DC)变换器中引入非线性控制,提升了多端口变换器的响应速度与混合储能的能量分配效率。最后,基于典型工况,通过半实物动态模拟验证了所提控制策略可以调度功率在不同端口间按需转移,同时不同介质储能功率可合理分配与存储释放。实验结果表明,混合储能装置投入后,再生制动能量的利用率为93.67%,实现了再生制动能量的高效利用。
基金supported by National Development and Reform Commission of China (Grant No. 2005934)
文摘Braking on low adhesion-coefficient roads, hybrid electric vehicle＇s motor regenerative torque is switched off to safeguard the normal anti-lock braking system （ABS） fimction. When the ABS control is terminated, the motor regenerative braking is readmitted. Aiming at avoiding permanent cycles from hydraulic anti-lock braking to motor regenerative braking, a novel electro-mechanical hybrid anti-lock braking system using fuzzy logic is designed. Different from the traditional single control structure, this system has a two-layered hierarchical structure, The first layer is responsible for harmonious adjustment or interaction between regenerative system and anti-lock braking system. The second layer is responsible for braking torque distribution and adjustment. The closed-loop simulation model is built. Control strategy and method for coordination between regenerative and anti-lock braking are developed. Simulation braking on low adhesion-coefficient roads with fuzzy logic control and real vehicle braking field test are presented. The results from simulating analysis and experiment show braking performance of the vehicle is perfect, harmonious coordination between regenerative and anti-lock braking function, significant amount of braking energy can be recovered and the proposed control strategy and method are effective.
基金supported by National Natural Science Foundation of China (Grant No. 50875054)National Key Laboratory of Vehicular Transmission of China (Grant No. 51457050105HT0112).
文摘Hydraulic hybrid vehicles （HHV） with secondary regulation technology has the potential of improving fuel economy by operating the engine in the optimum efficiency range and making use of regenerative braking. Hydrostatic transmission technology has the advantage of higher power density and the ability to accept the high rates and high frequencies of charging and discharging, both of which are not favorable for batteries, but the lower energy density requires special power matching design and control strategy to coordinate all the powertrain components in an optimal manner. A multi-objective optimization method is proposed to distinguish the components size values of HHV by considering the requirements of driving cycles and technology aspects. The regenerative braking strategy and energy control strategy based on the optimized HHV is proposed to recovery the braking energy and distribute the regenerated braking energy. Simulation results show that by taking the optimized configuration of HHV, adopting the regenerative braking strategy and energy control strategy are helpful to improve the system efficiency and fuel economy of HHV under urban driving cycles.
