The rapid consumption of fossil fuel and increased environmental damage caused by it have given a strong impetus to the growth and development of fuelefficient vehicles. Hybrid electric vehicles (HEVs) have evolved fr...The rapid consumption of fossil fuel and increased environmental damage caused by it have given a strong impetus to the growth and development of fuelefficient vehicles. Hybrid electric vehicles (HEVs) have evolved from their inchoate state and are proving to be a promising solution to the serious existential problem posed to the planet earth. Not only do HEVs provide better fuel economy and lower emissions satisfying environmental legislations, but also they dampen the effect of rising fuel prices on consumers. HEVs combine the drive powers of an internal combustion engine and an electrical machine. The main components of HEVs are energy storage system, motor, bidirectional converter and maximum power point trackers (MPPT, in case of solar-powered HEVs). The performance of HEVs greatly depends on these components and its architecture. This paper presents an extensive review on essential components used in HEVs such as their architectures with advantages and disadvantages, choice of bidirectional converter to obtain high efficiency, combining ultracapacitor with battery to extend the battery life, traction motors’ role and their suitability for a particular application. Inclusion of photovoltaic cell in HEVs is a fairly new concept and has been discussed in detail. Various MPPT techniques used for solar-driven HEVs are also discussed in this paper with their suitability.展开更多
为提高电池储能系统的功率分配合理性,提出基于状态优先的金枪鱼群优化PSTSO(priority of status tuna swarm optimization)算法的储能系统功率分配策略。首先设定了3个储能系统功率分配的评价指标,其次建立储能系统的运行成本、储能单...为提高电池储能系统的功率分配合理性,提出基于状态优先的金枪鱼群优化PSTSO(priority of status tuna swarm optimization)算法的储能系统功率分配策略。首先设定了3个储能系统功率分配的评价指标,其次建立储能系统的运行成本、储能单元的健康状态SOH(state-of-health)损失、储能系统的荷电状态SOC(state-of-charge)一致性的数学模型,最后在满足系统功率平衡和SOC上、下限约束条件下,采用PSTSO算法进行功率分配。算例分析结果表明,所提策略可以有效减少电池单元充放电次数,降低电池单元的容量损耗,且保证储能系统的SOC一致性好。展开更多
“双碳”背景下,综合考虑储能系统容量配置方法和运行策略,有助于提高风光可再生能源消纳率、保障系统经济性和安全运行。在储能系统规划阶段,针对风光协同消纳的不同应用场景,本文提出一种基于运行成本考虑的储能系统容量优化配置方法...“双碳”背景下,综合考虑储能系统容量配置方法和运行策略,有助于提高风光可再生能源消纳率、保障系统经济性和安全运行。在储能系统规划阶段,针对风光协同消纳的不同应用场景,本文提出一种基于运行成本考虑的储能系统容量优化配置方法。以弃风、弃光和储能投资成本之和最小为目标函数,考虑功率平衡、支路潮流以及火电、风电和光伏出力等构建约束条件,对不同场景下储能系统容量进行规划,从而减少弃风弃光,实现对风光可再生能源的消纳。在储能系统实际运行阶段,针对储能系统SOC均衡度较差和运行策略实现较难的问题,提出储能系统功率优化分配双层运行策略。根据调度系统为消纳风光等可再生能源下发的储能系统功率指令,在上层基于储能电池子系统剩余电量(state of charge, SOC)和充放电能力选择最优充放电电池子系统,在下层以电池单元SOC均衡为目标实现功率优化分配,并基于AOE(activity on edge)控制组态通过Excel编写配置文件实现该策略,具有使用难度低、编写简单、控制过程形象直观、计算与运行效率高等优点,对减缓电池老化、降低用户运行策略实现难度、有效消纳风光可再生能源具有重要意义。展开更多
文摘The rapid consumption of fossil fuel and increased environmental damage caused by it have given a strong impetus to the growth and development of fuelefficient vehicles. Hybrid electric vehicles (HEVs) have evolved from their inchoate state and are proving to be a promising solution to the serious existential problem posed to the planet earth. Not only do HEVs provide better fuel economy and lower emissions satisfying environmental legislations, but also they dampen the effect of rising fuel prices on consumers. HEVs combine the drive powers of an internal combustion engine and an electrical machine. The main components of HEVs are energy storage system, motor, bidirectional converter and maximum power point trackers (MPPT, in case of solar-powered HEVs). The performance of HEVs greatly depends on these components and its architecture. This paper presents an extensive review on essential components used in HEVs such as their architectures with advantages and disadvantages, choice of bidirectional converter to obtain high efficiency, combining ultracapacitor with battery to extend the battery life, traction motors’ role and their suitability for a particular application. Inclusion of photovoltaic cell in HEVs is a fairly new concept and has been discussed in detail. Various MPPT techniques used for solar-driven HEVs are also discussed in this paper with their suitability.
文摘为提高电池储能系统的功率分配合理性,提出基于状态优先的金枪鱼群优化PSTSO(priority of status tuna swarm optimization)算法的储能系统功率分配策略。首先设定了3个储能系统功率分配的评价指标,其次建立储能系统的运行成本、储能单元的健康状态SOH(state-of-health)损失、储能系统的荷电状态SOC(state-of-charge)一致性的数学模型,最后在满足系统功率平衡和SOC上、下限约束条件下,采用PSTSO算法进行功率分配。算例分析结果表明,所提策略可以有效减少电池单元充放电次数,降低电池单元的容量损耗,且保证储能系统的SOC一致性好。
文摘“双碳”背景下,综合考虑储能系统容量配置方法和运行策略,有助于提高风光可再生能源消纳率、保障系统经济性和安全运行。在储能系统规划阶段,针对风光协同消纳的不同应用场景,本文提出一种基于运行成本考虑的储能系统容量优化配置方法。以弃风、弃光和储能投资成本之和最小为目标函数,考虑功率平衡、支路潮流以及火电、风电和光伏出力等构建约束条件,对不同场景下储能系统容量进行规划,从而减少弃风弃光,实现对风光可再生能源的消纳。在储能系统实际运行阶段,针对储能系统SOC均衡度较差和运行策略实现较难的问题,提出储能系统功率优化分配双层运行策略。根据调度系统为消纳风光等可再生能源下发的储能系统功率指令,在上层基于储能电池子系统剩余电量(state of charge, SOC)和充放电能力选择最优充放电电池子系统,在下层以电池单元SOC均衡为目标实现功率优化分配,并基于AOE(activity on edge)控制组态通过Excel编写配置文件实现该策略,具有使用难度低、编写简单、控制过程形象直观、计算与运行效率高等优点,对减缓电池老化、降低用户运行策略实现难度、有效消纳风光可再生能源具有重要意义。