技术领域technical field
本发明属于电动汽车无线供电技术领域，尤其涉及一种分布式能源与基于磁共振耦合技术的电动汽车无线供电一体化系统。The invention belongs to the technical field of electric vehicle wireless power supply, and in particular relates to an integrated system of distributed energy and electric vehicle wireless power supply based on magnetic resonance coupling technology.
背景技术Background technique
与大型可再生能源发电接入于输电网，需要远距离传输不同，可再生分布式发电靠近负载端，能够有效降低输电损耗，具有小而灵活、效率高、投资成本低等优点，是智能电网的重要发展方向之一。但是由于分布式发电受地理位置及天气条件等因素的影响，间歇性较强，输出功率不太稳定且时间上与负荷波动也不一致，造成峰谷差大，对电网的调容、调压能力要求较高。而且目前储能系统的容量也有限，不能长时间提供功率以应对分布式发电容量的不足分布式发电需要10%~20%的备用容量。因此，分布式发电在一定程度上受到了限制。Unlike large-scale renewable energy power generation connected to the transmission grid, which requires long-distance transmission, renewable distributed power generation is close to the load end, which can effectively reduce transmission loss. It has the advantages of small and flexible, high efficiency, and low investment cost. It is a smart grid One of the important directions of development. However, due to the influence of geographical location and weather conditions on distributed power generation, the intermittent nature is strong, the output power is not stable, and the time is not consistent with the load fluctuation, resulting in a large peak-valley difference, which affects the capacity and voltage regulation capabilities of the power grid. Higher requirements. Moreover, the capacity of the current energy storage system is also limited, and it cannot provide power for a long time to cope with the shortage of distributed generation capacity. Distributed generation requires 10% to 20% of reserve capacity. Therefore, distributed generation is limited to a certain extent.
随着电动汽车的大规模发展，由于车主的充电行为往往比较随机，大量电动汽车插入电网充电必定会对电网结构及运行造成巨大的压力，影响电网的安全、经济运行，需要对其引导控制。With the large-scale development of electric vehicles, because the charging behavior of car owners is often random, a large number of electric vehicles plugged into the grid for charging will inevitably cause huge pressure on the structure and operation of the grid, affecting the safety and economic operation of the grid, and it is necessary to guide and control it.
同时动力电池一直是电动汽车发展的最大制约因素，电动汽车电池充电目前一般采用两种基本方法：接触式充电和感应耦合式充电。目前，电动汽车充电站桩采用的都是传导充电的接触充电模式，车辆处于静止状态，使用充电电缆将电能从供电设备传送至电池组中。这导致充电站存在以下几个缺点：充电时间长；充电线笨重，且需要频繁插拔；充电电流较大尤其是在快速充电模式下电流可达上百安培，在雨天充电或者出现电缆老化时存在着安全隐患；电池组昂贵，且寿命较短；充电桩接口频繁插拔，需要频繁更换，可维护性差。感应充电所存在的一个较大缺点即其传输距离过短，一般工业产品的有效传输距离只有2-3cm，而且需要机械装置将汽车停在合适的位置与充电线圈对准。At the same time, the power battery has always been the biggest constraint factor for the development of electric vehicles. Currently, two basic methods are generally used for charging electric vehicle batteries: contact charging and inductive coupling charging. At present, electric vehicle charging stations all adopt the contact charging mode of conduction charging. The vehicle is in a static state, and the charging cable is used to transmit the electric energy from the power supply equipment to the battery pack. This leads to the following disadvantages in the charging station: long charging time; heavy charging cable, and frequent plugging and unplugging; large charging current, especially in the fast charging mode, the current can reach hundreds of amperes, when charging in rainy days or when the cable is aging There are potential safety hazards; the battery pack is expensive and has a short life; the charging pile interface is frequently plugged and unplugged, requiring frequent replacement, and poor maintainability. A major disadvantage of inductive charging is that its transmission distance is too short. The effective transmission distance of general industrial products is only 2-3cm, and a mechanical device is required to park the car at a suitable position and align it with the charging coil.
发明内容Contents of the invention
针对现有技术存在的不足，本发明提出了一种分布式能源与基于磁共振耦合技术的电动汽车无线供电一体化系统。本发明就近利用分布式能源对电动汽车进行供电，解决了分布式能源并网产生的诸多问题，避免了大量电动汽车插入电网充电对电网结构及运行造成巨大的压力，同时采用磁共振耦合无线电能传输技术，避免了传导充电方式存在的弊端，极大地推动电动汽车的发展。Aiming at the deficiencies in the prior art, the present invention proposes an integrated system of distributed energy and electric vehicle wireless power supply based on magnetic resonance coupling technology. The present invention utilizes distributed energy sources to supply power to electric vehicles, solves many problems caused by grid-connected distributed energy sources, and avoids a large number of electric vehicles plugged into the grid for charging, causing huge pressure on the grid structure and operation. Transmission technology avoids the disadvantages of conduction charging and greatly promotes the development of electric vehicles.
为解决上述技术问题，本发明采用如下技术方案：In order to solve the problems of the technologies described above, the present invention adopts the following technical solutions:
分布式能源与基于磁共振耦合技术的电动汽车无线供电一体化系统，其特征是，包括：The integrated system of distributed energy and electric vehicle wireless power supply based on magnetic resonance coupling technology is characterized by including:
分布式能源发电系统：基于光伏或风力或两者结合进行发电；Distributed energy generation system: generate electricity based on photovoltaic or wind power or a combination of the two;
磁共振耦合无线电能传输系统：将分布式能源发电系统产生电能传输给电动汽车；Magnetic resonance coupling wireless power transmission system: transmit the power generated by the distributed energy generation system to electric vehicles;
直流微电网：设置在分布式能源发电系统、储能系统、配电网和磁共振耦合无线电能传输系统之间，用于将分布式能源发电系统产生的直流电进行DC/AC转换后通过磁共振耦合无线电能传输系统输送给电动汽车；DC microgrid: It is set between the distributed energy generation system, energy storage system, distribution network and magnetic resonance coupled wireless power transmission system, and is used to convert the direct current generated by the distributed energy generation system into DC/AC and pass through magnetic resonance Coupling wireless power transfer system to electric vehicles;
储能系统：将电动汽车行驶时，将动能产生的电能通过直流微电网传输至储能系统存储，并可以在电动汽车电力匮乏时，通过直流微电网给电动汽车充电。Energy storage system: When the electric vehicle is driving, the electric energy generated by the kinetic energy is transmitted to the energy storage system through the DC micro-grid for storage, and can be used to charge the electric vehicle through the DC micro-grid when the electric vehicle is short of power.
分布式能源发电系统产生的电能供给电动汽车充电还有剩余的情况下，通过直流微电网给储能系统储存或者在电网用电高峰时通过DC/AC转换输送给电网；在分布式能源发电系统产生的电能不足以给电动汽车充电时，储能系统将释放储存的能量进行DC/AC转换后通过共振磁耦合无线电能传输系统输送给电动汽车充电，如果还不够则由配电网电能补充；在电网用电量低谷时也可将电网多于电量通过直流微电网给储能系统储存。在没有电动汽车充电，或者分布式能源产生的电能多于电动汽车充电所需电能时，多于的电能通过直流微电网给储能系统充电，或者输送给电网When the electricity generated by the distributed energy generation system is supplied to the electric vehicle for charging and there is still surplus, it is stored in the energy storage system through the DC micro-grid or transmitted to the grid through DC/AC conversion during the peak power consumption of the grid; in the distributed energy generation system When the generated electric energy is not enough to charge the electric vehicle, the energy storage system will release the stored energy for DC/AC conversion and then transmit it to the electric vehicle for charging through the resonant magnetic coupling wireless power transmission system. If it is not enough, it will be supplemented by the electric energy of the distribution network; When the power consumption of the power grid is low, the excess power of the power grid can also be stored in the energy storage system through the DC micro-grid. When there is no electric vehicle charging, or the distributed energy generates more electric energy than electric vehicle charging requires, the excess electric energy is charged to the energy storage system through the DC microgrid, or sent to the grid
在上述的分布式能源与基于磁共振耦合技术的电动汽车无线供电一体化系统，所述直流微电网包括直流母线以及连接在直流母线与磁共振耦合无线电能传输系统之间若干的DC/AC转换装置；以及连接在直流母线与分布式能源发电系统、分布式能源发电系统、储能系统、配电网之间的若干DC/AC转换装置和若干DC/DC转换装置；所述储能系统通过DC/DC转换装置与直流母线连接。In the above integrated system of distributed energy and electric vehicle wireless power supply based on magnetic resonance coupling technology, the DC microgrid includes a DC bus and several DC/AC conversions connected between the DC bus and the magnetic resonance coupling wireless power transmission system device; and several DC/AC conversion devices and several DC/DC conversion devices connected between the DC bus and the distributed energy generation system, the distributed energy generation system, the energy storage system, and the distribution network; the energy storage system passes The DC/DC converting device is connected to the DC bus.
在上述的分布式能源与基于磁共振耦合技术的电动汽车无线供电一体化系统，所述分布式能源发电系统与所述磁共振耦合无线电能传输系统之间通过所述直流母线和所述变流装置相关联。所述分布式能源发电系统输出的电能依次经过所述变流装置、所述直流母线、再经过所述变流装置，最后进入所述磁共振耦合无线电能传输系统，为电动汽车供电。In the above-mentioned integrated system of distributed energy and electric vehicle wireless power supply based on magnetic resonance coupling technology, the distributed energy generation system and the magnetic resonance coupled wireless power transmission system are connected by the DC bus and the inverter device is associated. The electric energy output by the distributed energy generation system sequentially passes through the converter device, the DC bus, and then the converter device, and finally enters the magnetic resonance coupling wireless power transmission system to supply power for electric vehicles.
在上述的分布式能源与基于磁共振耦合技术的电动汽车无线供电一体化系统，所述储能系统输出的电能经过所述变流装置进入所述直流母线，然后经过所述变流装置，最后经过所述磁共振耦合无线电能传输系统，为电动汽车供电。In the above integrated system of distributed energy and electric vehicle wireless power supply based on magnetic resonance coupling technology, the electric energy output by the energy storage system enters the DC bus through the converter device, then passes through the converter device, and finally Power is supplied to electric vehicles through the magnetic resonance coupling wireless power transmission system.
在上述的分布式能源与基于磁共振耦合技术的电动汽车无线供电一体化系统，所述系统给电动汽车供电的优先级别由高至低依次为：分布式能源发电系统、储能系统以及配电网；当分布式能源发电系统和储能系统能源都不足以给电动汽车供电时，由配电网通过共振磁耦合无线电能传输系统给电动汽车供电。In the above-mentioned integrated system of distributed energy and electric vehicle wireless power supply based on magnetic resonance coupling technology, the priority of the system to supply power to electric vehicles from high to low is: distributed energy generation system, energy storage system and power distribution network; when the distributed energy generation system and the energy storage system are not enough to power electric vehicles, the distribution network supplies power to electric vehicles through the resonant magnetic coupling wireless power transmission system.
在上述的分布式能源与基于磁共振耦合技术的电动汽车无线供电一体化系统，所述分布式能源发电系统进一步包括光伏发电系统、风力发电系统和风光互补发电系统。光伏发电系统和风力发电系统可以分别单独供电，也可依据风光最佳配比，形成风光互补发电系统进行供电。In the above integrated system of distributed energy and electric vehicle wireless power supply based on magnetic resonance coupling technology, the distributed energy generation system further includes a photovoltaic power generation system, a wind power generation system and a wind-solar hybrid power generation system. The photovoltaic power generation system and the wind power generation system can supply power independently, or they can form a wind-solar hybrid power generation system for power supply according to the optimal ratio of wind and wind.
在上述的分布式能源与基于磁共振耦合技术的电动汽车无线供电一体化系统，所述风光互补发电系统进一步包括发电环节、变换控制环节、和电能存储环节。In the above-mentioned integrated system of distributed energy and electric vehicle wireless power supply based on magnetic resonance coupling technology, the wind-solar hybrid power generation system further includes a power generation link, a conversion control link, and an electric energy storage link.
在上述的分布式能源与基于磁共振耦合技术的电动汽车无线供电一体化系统，所述磁共振耦合无线电能传输系统包括依次连接的整流滤波模块、功率振荡模块、跟踪控制模块；用于给电动汽车充电的电磁场发射单元与功率振荡模块连接。In the above-mentioned integrated system of distributed energy and electric vehicle wireless power supply based on magnetic resonance coupling technology, the magnetic resonance coupling wireless power transmission system includes a rectification and filtering module, a power oscillation module, and a tracking control module connected in sequence; The electromagnetic field transmitting unit of the car charging is connected with the power oscillation module.
和现有技术相比，本发明具有如下优点和有益效果：1、利用可再生能源发电可降低电动汽车对化石燃料的依赖，实现真正意义上的低碳。2、电动汽车与可再生能源通过微电网集成，通过电动汽车充电的可调节特性，能协助解决可再生能源的间歇性问题，降低储能系统成本。3、采用直流微网结构，可再生能源与直流母线之间仅需一级电压变换装置，建设成本经济，电力传输效率较高。各种可再生能源之间的同步问题、环流抑制问题能得到更好的解决。直流连接本质上没有谐波因素干扰，因此具有更好的电能质量。4、就近利用分布式能源对电动汽车进行供电，解决了分布式能源并网产生的诸多问题，同时避免了大量电动汽车插入电网充电对电网结构及运行造成巨大的压力。5、分布式能源与电动汽车接入配电网，两者进行协调互补，可以更灵活、更方便地调整电网的运行状态。6、在单独利用光伏发电和风力发电的基础上，进一步提出风光互补发电系统，克服单纯的风力发电和光伏发电系统夏季日照条件好，但是风力较弱，冬季风力较强，但是日照弱的缺点，可满足持续供电的需求，提高了系统的经济性和运行可靠性。7、采用磁共振耦合无线供电方式，实现电源到车载电池组的非接触式新型电能接入模式，为电动汽车提供实时的电能供给，克服传统供电方式成本高、可靠性低等问题，提高了电能补给的便捷性和安全性，对电动汽车发展提供有力的支持。Compared with the prior art, the present invention has the following advantages and beneficial effects: 1. Utilizing renewable energy to generate electricity can reduce the dependence of electric vehicles on fossil fuels and realize low-carbon in the true sense. 2. The integration of electric vehicles and renewable energy through the micro-grid, through the adjustable characteristics of electric vehicle charging, can help solve the intermittent problem of renewable energy and reduce the cost of energy storage systems. 3. With the DC micro-grid structure, only one-stage voltage conversion device is needed between the renewable energy source and the DC bus, the construction cost is economical, and the power transmission efficiency is high. The synchronization problem among various renewable energy sources and the circulation suppression problem can be better solved. A DC link is inherently free of harmonic factor interference and therefore has better power quality. 4. The nearby distributed energy is used to supply power to electric vehicles, which solves many problems caused by the grid connection of distributed energy, and at the same time avoids the huge pressure on the grid structure and operation caused by a large number of electric vehicles plugged into the grid for charging. 5. Distributed energy and electric vehicles are connected to the distribution network, and the two coordinate and complement each other, which can adjust the operating status of the power grid more flexibly and conveniently. 6. On the basis of using photovoltaic power generation and wind power generation alone, a wind-solar hybrid power generation system is further proposed to overcome the shortcomings of simple wind power generation and photovoltaic power generation systems that have good sunshine conditions in summer, but weak wind power, and strong wind power in winter, but weak sunlight. , which can meet the demand of continuous power supply and improve the economy and operation reliability of the system. 7. Using the magnetic resonance coupling wireless power supply method, realize the non-contact new power access mode from the power supply to the vehicle battery pack, provide real-time power supply for electric vehicles, overcome the problems of high cost and low reliability of the traditional power supply method, and improve the The convenience and safety of power supply provide strong support for the development of electric vehicles.
附图说明Description of drawings
图1是本发明的整体功能结构示意图。Fig. 1 is a schematic diagram of the overall functional structure of the present invention.
图2是风光互补发电系统结构示意图。Fig. 2 is a structural schematic diagram of a wind-solar hybrid power generation system.
图3是磁共振耦合无线电能传输系统结构示意图。Fig. 3 is a schematic structural diagram of a magnetic resonance coupled wireless power transmission system.
具体实施方式detailed description
下面通过实施例，并结合附图，对本发明作进一步具体的说明。The present invention will be further specifically described below through the embodiments and in conjunction with the accompanying drawings.
图1所示为分布式能源与基于磁共振耦合技术的电动汽车无线供电一体化系统的整体功能结构示意图。分布式能源发电系统1包含光伏发电系统、风力发电系统和风光互补发电系统。光伏发电系统和风力发电系统可以单独进行供电，也可以考虑光伏发电和风力发电之间的互补性，将两者相结合，依据风光最佳配比，形成风光互补发电系统进行供电，实现系统最大功率的输出。Figure 1 is a schematic diagram of the overall functional structure of the integrated system of distributed energy and electric vehicle wireless power supply based on magnetic resonance coupling technology. The distributed energy generation system 1 includes a photovoltaic power generation system, a wind power generation system and a wind-solar hybrid power generation system. Photovoltaic power generation system and wind power generation system can supply power independently, or consider the complementarity between photovoltaic power generation and wind power generation, combine the two, and form a wind-solar hybrid power generation system for power supply according to the optimal ratio of wind and wind power to achieve the maximum system power output.
风力发电机组产生的交流电通过AC/DC变流装置变成直流电，进入直流母线3，然后通过DC/AC变流装置变成交流电为磁共振耦合无线电能传输系统2供能，磁共振耦合无线电能传输系统2利用磁共振耦合的方式为电动汽车充电。The alternating current generated by the wind turbine is converted into direct current through the AC/DC converter, enters the DC bus 3, and then is converted into alternating current through the DC/AC converter to supply energy for the magnetic resonance coupling wireless power transmission system 2, and the magnetic resonance coupling wireless power Transmission system 2 uses magnetic resonance coupling to charge electric vehicles.
光伏组件输出的直接是直流电流，经过DC/DC变流装置后进入直流母线3，然后通过DC/AC变流装置变成交流电为磁共振耦合无线电能传输系统2供能，利用磁共振耦合的方式为电动汽车充电。The direct current output by the photovoltaic module is direct current, which enters the DC bus 3 after passing through the DC/DC converter device, and then becomes alternating current through the DC/AC converter device to supply energy for the magnetic resonance coupling wireless power transmission system 2, using the magnetic resonance coupling way to charge electric vehicles.
风光互补发电系统输出的电流为经过变换的直流电，可直接进入直流母线3，然后通过DC/AC变流装置变成交流电为磁共振耦合无线电能传输系统2供能，利用磁共振耦合的方式为电动汽车充电。The output current of the wind-solar hybrid power generation system is converted direct current, which can directly enter the DC bus 3, and then become alternating current through the DC/AC converter device to supply energy for the magnetic resonance coupling wireless power transmission system 2. The magnetic resonance coupling method is Electric car charging.
储能系统输出的电流通过DC/DC变流装置进入直流母线3，然后通过DC/AC变流装置变成交流电为磁共振耦合无线电能传输系统2供能，利用磁共振耦合的方式为电动汽车充电。The current output by the energy storage system enters the DC bus 3 through the DC/DC converter device, and then becomes alternating current through the DC/AC converter device to supply energy for the magnetic resonance coupling wireless power transmission system 2, and uses the magnetic resonance coupling method to power the electric vehicle Charge.
电动汽车既可作为负荷充电，又可作为电源发电。在分布式发电充足时，可以对电动汽车进行充电储能；而在分布式发电不足时，电动汽车可以回馈电能。电动汽车发出的电能依次经过磁共振耦合无线电能传输系统2、AC/DC变流装置，进入直流母线3，可以调节母线电压，协助解决可再生能源的间歇性问题，或进一步通过DC/DC变流装置进入储能系统4储能。Electric vehicles can be used both as a load charge and as a power source to generate electricity. When distributed generation is sufficient, electric vehicles can be charged and stored; when distributed generation is insufficient, electric vehicles can feed back electric energy. The electric energy generated by the electric vehicle passes through the magnetic resonance coupling wireless power transmission system 2 and the AC/DC converter in turn, and then enters the DC bus 3, which can adjust the bus voltage to help solve the intermittent problem of renewable energy, or further pass through the DC/DC converter. The flow device enters the energy storage system 4 for energy storage.
通过对交流母线公共连接点PCC端口开关的控制，可以实现微网并网与孤岛运行模式的转换。电动汽车不仅可在微网中充电，也可在某些时段向配电网释放电能，通过优化充放电管理，电动汽车可作为储能系统来增强电网接纳间歇性电源的能力。同时，分布式发电系统1不仅可以就近为电动汽车充电，也可通过开关控制并入配电网，与电动汽车进行协调互补，可以更灵活、更方便地调整电网的运行状态。Through the control of the PCC port switch of the common connection point of the AC bus, the conversion between the grid-connected micro-grid and the island operation mode can be realized. Electric vehicles can not only be charged in the microgrid, but also release electric energy to the distribution network at certain times. By optimizing charge and discharge management, electric vehicles can be used as energy storage systems to enhance the grid's ability to accept intermittent power sources. At the same time, the distributed power generation system 1 can not only charge the nearby electric vehicles, but also can be integrated into the distribution network through switch control, coordinate and complement the electric vehicles, and can adjust the operating status of the power grid more flexibly and conveniently.
如图2所示，风光互补发电系统包含发电环节、变换控制环节、和电能存储环节。发电环节由风力发电机和太阳能光伏组件组成，产生电能。变换控制环节由整流器和变换器组成。电能存储环节由蓄电池组成。风力发电机组产生的三相交流电通过不可控三相整流器变成直流电，经过滤波器后送入DC/DC变换器，最后进入直流母线3。光伏组件输出的直接是直流电流，在电池组输出的直流出口接一个防反二极管以防止反向电压损坏光伏电池板，再经过DC/DC变换器，最后进入直流母线3。其中的DC/DC变换环节是最大功率的控制环节，通过最大功率跟踪MPPT跟踪控制，调节变换器的占空比可以实现最大功率跟踪，实现系统最大功率的输出。电能存储环节中蓄电池承担了能量的储存工作，是储能的核心单元，储存的能量可以用来在由于天气原因风光互补系统不能供电时作为备用电源提供给负载，在整个系统中起着平衡发电系统电能输出和荷载部分电能需求的重要作用。As shown in Figure 2, a wind-solar hybrid power generation system includes a power generation link, a conversion control link, and an electric energy storage link. The power generation link consists of wind generators and solar photovoltaic modules to generate electricity. The conversion control link is composed of a rectifier and a converter. The energy storage link is composed of batteries. The three-phase alternating current generated by the wind power generating set is converted into direct current through the uncontrollable three-phase rectifier, and then sent to the DC/DC converter after passing through the filter, and finally enters the direct current bus 3 . The output of the photovoltaic module is direct current. An anti-reverse diode is connected to the DC output of the battery pack to prevent reverse voltage from damaging the photovoltaic panel, and then passes through the DC/DC converter and finally enters the DC bus 3 . Among them, the DC/DC conversion link is the control link of the maximum power. Through the maximum power tracking MPPT tracking control, the duty cycle of the converter can be adjusted to realize the maximum power tracking and realize the maximum power output of the system. In the electric energy storage link, the battery undertakes the energy storage work and is the core unit of energy storage. The stored energy can be used as a backup power supply to the load when the wind-solar hybrid system fails to supply power due to weather, and plays a role in balancing power generation in the entire system. The important role of system power output and load part power demand.
风光互补发电系统中控制的核心就是最大功率跟踪MPPT跟踪控制，本质是寻求最优输出值的过程，在不同的气象条件和环境下通过调节系统的参数，实现系统最大功率的输出，达到能量的最大利用。同时也应当保护蓄电池的安全工作，防止电池因过充过放造成损坏。The core of the control in the wind-solar hybrid power generation system is the maximum power tracking MPPT tracking control, which is essentially the process of seeking the optimal output value. By adjusting the parameters of the system under different weather conditions and environments, the maximum power output of the system can be achieved to achieve energy efficiency. Maximum utilization. At the same time, the safe operation of the battery should also be protected to prevent the battery from being damaged due to overcharging and over-discharging.
如图3所示，磁共振耦合无线电能传输系统2，由整流滤波模块、功率振荡模块、跟踪控制模块和电磁场发射单元四个部分组成。直流母线3的直流电经过DC/AC变流装置后变为交流电，进入整流滤波模块。整流滤波模块进一步包括整流模块和滤波模块，整流模块用来将交流电整流为直流电，滤波模块用来消除整流模块输出直流电中高次谐波，从而输出恒定电压直流电。功率震荡模块用来将整流滤波模块输出的恒定电压直流电转换为适应负载频率要求的交变电流，可依照实际需求调整输出交变电流的频率。跟踪控制模块用来定位电动汽车行驶时的位置，并向功率振荡模块发出信号。As shown in Figure 3, the magnetic resonance coupling wireless power transmission system 2 is composed of four parts: a rectification and filtering module, a power oscillation module, a tracking control module and an electromagnetic field emission unit. The DC power of the DC bus 3 is converted into AC power after passing through the DC/AC converter, and enters the rectification and filtering module. The rectifying and filtering module further includes a rectifying module and a filtering module. The rectifying module is used to rectify the alternating current into direct current, and the filtering module is used to eliminate high-order harmonics in the direct current output by the rectifying module, thereby outputting a constant voltage direct current. The power oscillation module is used to convert the constant voltage direct current output by the rectification and filtering module into an alternating current that meets the load frequency requirements, and the frequency of the output alternating current can be adjusted according to actual needs. The tracking control module is used to locate the position of the electric vehicle while driving, and sends a signal to the power oscillation module.
跟踪控制模块根据电动汽车位置信息，做出工作决策，并向功率振荡模块发出控制命令，使之与电磁场发射单元连接，实现电动汽车到达充电点时，电磁场发射单元处于工作状态。同时，跟踪控制模块也可依据电动汽车位置信息，向功率振荡模块发出控制命令，使之切断与电磁场发射单元的连接，确保电动汽车离开充电点时，电磁场发射单元处于停止工作状态。The tracking control module makes work decisions based on the location information of the electric vehicle, and sends control commands to the power oscillation module to connect it to the electromagnetic field emission unit, so that when the electric vehicle reaches the charging point, the electromagnetic field emission unit is in working condition. At the same time, the tracking control module can also send a control command to the power oscillation module to cut off the connection with the electromagnetic field emission unit according to the position information of the electric vehicle, so as to ensure that the electromagnetic field emission unit is in a stop working state when the electric vehicle leaves the charging point.
电磁场发射单元中发射线圈埋设于地面下，与地面所在平面平行，用来发射调谐电路产生的交变电磁场。The transmitting coil in the electromagnetic field transmitting unit is buried under the ground and is parallel to the plane of the ground, and is used to transmit the alternating electromagnetic field generated by the tuning circuit.
| Application Number | Priority Date | Filing Date | Title |
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| CN201610970527.6ACN106427640A (en) | 2016-10-28 | 2016-10-28 | Distributed energy source and electric vehicle wireless power supply integrated system based on magnetic resonance coupling technology |
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| CN201610970527.6ACN106427640A (en) | 2016-10-28 | 2016-10-28 | Distributed energy source and electric vehicle wireless power supply integrated system based on magnetic resonance coupling technology |
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| CN201610970527.6APendingCN106427640A (en) | 2016-10-28 | 2016-10-28 | Distributed energy source and electric vehicle wireless power supply integrated system based on magnetic resonance coupling technology |
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