前驱纯电动汽车制动能量回收系统研究
发布时间：2018-08-20 18:46
【摘要】：随着全球石油消耗的增加能源危机越发严重,环境污染问题也日益加重。电动汽车因其具有零排放、噪声低、污染少等优点,使得大力发展电动汽车成为解决当前资源与环境问题的重要途径。当前制约电动汽车发展的主要因素为续驶里程短、电池寿命短、使用成本高等,从近期来看制动能量回收技术是解决这一问题最直接最行之有效的方法。通过制动能量回收系统回收电动汽车在制动过程中的能量并将其储存到蓄电池中,从而增加续驶里程进一步降低电池使用成本。研究能量回收率高的制动能量回收系统是增加续驶里程的最有效方法。本文在对制动能量回收系统结构与原理研究以及永磁直流电机工作状态与发电原理研究的基础上,着重研究了制动力分配对能量回收率的影响,明确了电机再生制动力的分配将直接影响到能量回收率的大小,并建立了本文的制动力分配策略。为保证与传统汽车机械摩擦式制动的一致性进而提高制动过程中的稳定性与舒适性,本文在建立最大能量回收率制动力分配策略的基础上对电机控制方法做了进一步研究,并提出了对制动强度以及电机制动力矩的双PID闭环回馈控制方法。通过在ADVISOR高级仿真软件中重新建立本文所需要的制动力分配控制策略,并对搭建的新模型进行ADVISOR二次仿真。仿真结果表明在本文的制动力分配策略下有效的提高了能量回收率,并增加了电动汽车的续驶里程。
[Abstract]:With the increasing oil consumption in the world, the energy crisis is becoming more and more serious, and the environmental pollution is becoming more and more serious. Because of its advantages of zero emission, low noise and less pollution, electric vehicle (EV) has become an important way to solve the problem of resources and environment. At present, the main factors restricting the development of electric vehicles are short driving mileage, short battery life and high cost. In the near future, braking energy recovery technology is the most direct and effective method to solve this problem. The braking energy recovery system is used to recover the energy of the electric vehicle during the braking process and store it in the battery, thus increasing the driving mileage and further reducing the battery cost. The study of braking energy recovery system with high energy recovery rate is the most effective method to increase the driving range. On the basis of the research on the structure and principle of braking energy recovery system and the working state and generation principle of permanent magnet DC motor, the influence of braking force distribution on energy recovery is studied in this paper. It is clear that the distribution of regenerative braking force will directly affect the energy recovery rate, and the braking force allocation strategy is established in this paper. In order to ensure the consistency with the traditional friction brake and improve the stability and comfort in the braking process, this paper makes a further study on the motor control method based on the establishment of the maximum energy recovery braking force distribution strategy. A double PID closed loop feedback control method for braking strength and motor braking torque is proposed. The braking force allocation control strategy needed in this paper is re-established in the advanced simulation software of ADVISOR, and the new model is simulated by ADVISOR. The simulation results show that the braking force distribution strategy can effectively improve the energy recovery rate and increase the driving range of the electric vehicle.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：U469.72
本文编号：2194641
[Abstract]:With the increasing oil consumption in the world, the energy crisis is becoming more and more serious, and the environmental pollution is becoming more and more serious. Because of its advantages of zero emission, low noise and less pollution, electric vehicle (EV) has become an important way to solve the problem of resources and environment. At present, the main factors restricting the development of electric vehicles are short driving mileage, short battery life and high cost. In the near future, braking energy recovery technology is the most direct and effective method to solve this problem. The braking energy recovery system is used to recover the energy of the electric vehicle during the braking process and store it in the battery, thus increasing the driving mileage and further reducing the battery cost. The study of braking energy recovery system with high energy recovery rate is the most effective method to increase the driving range. On the basis of the research on the structure and principle of braking energy recovery system and the working state and generation principle of permanent magnet DC motor, the influence of braking force distribution on energy recovery is studied in this paper. It is clear that the distribution of regenerative braking force will directly affect the energy recovery rate, and the braking force allocation strategy is established in this paper. In order to ensure the consistency with the traditional friction brake and improve the stability and comfort in the braking process, this paper makes a further study on the motor control method based on the establishment of the maximum energy recovery braking force distribution strategy. A double PID closed loop feedback control method for braking strength and motor braking torque is proposed. The braking force allocation control strategy needed in this paper is re-established in the advanced simulation software of ADVISOR, and the new model is simulated by ADVISOR. The simulation results show that the braking force distribution strategy can effectively improve the energy recovery rate and increase the driving range of the electric vehicle.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：U469.72
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