【作者】 王天宇；

【导师】 朱春波；

【作者基本信息】 哈尔滨工业大学 ， 仪器科学与技术， 2010， 硕士

【摘要】 感应电能传输简称ICPT(Inductively Coupled Power Transfer)。该技术通过松耦合变压器使供电侧与用电侧以非接触的方式,间隔数毫米到十几厘米气隙,完成能量传输。在便携移动设备、电动汽车非接触充电、特殊环境中供电等方面发挥巨大作用。本文通过松耦合变压器的T型等效模型研究了其自身能量传输特性,分析了一次侧二次侧分别串联电容补偿结构的ICPT系统原理,给出了松耦合变压器的设计准则与系统电路参数计算式。并研制了ICPT系统硬件电路,包括全桥移相变换器,整流滤波,电压采集及无线反馈等部分,采用射频收发芯片和DSP完成无线闭环控制。本文对开环ICPT系统特性做了深入研究。包括工作频率偏离谐振频率时系统输出电压特性、全桥变换器移相角对输出电压的影响、全桥变换器实现零电压开通的条件、不同气隙传输特性。当系统工作在零电压开通模式,输入电压290V时,样机最大可传输功率3.75kW,系统整体效率89%。本文对闭环ICPT系统做了初步研究。根据改变移相角可以改变输出电压的特性,测试了系统开环幅频特性,设计了PI控制参数,通过调整移相角使输出电压在负载变化时保持恒定。输入电压为290V时,样机可稳压输出260V,最大输出功率2kW。更多还原

【Abstract】 Inductively Coupled Power Transfer is simplified for ICPT. This technology can transfer energy from a power supply to a power consumer contactlessly by loosely coupled transformer with an air gas varying from several millimeters to centimeters. Such energy transfer plays a tremendous role in power supply systems for handheld mobile equipment, electric vehicle and device in special environment.This thesis researched the power transfer characteristic of loosely coupled transformer basing on its T-type equivalent circuit model, analyzed the principle of Series-Series resonant ICPT system, gave the design criteria for loosely coupled transformer and calculate formulas for system circuit parameters, designed the circuit for ICPT system which consisted of full-bridge phase-shift converter, rectifier, filter, voltage sampling and wireless feedback system which completed wireless closed-loop control by RF transceiver chip and DSP.The characteristic of open-loop ICPT system was further researched, which included output voltage characteristic when the working frequency was different from the resonant frequency, phase-shift angle’s influence on system’s output voltage, realization conditions for full-bridge phase shift converter to work at Zero Voltage Switch Mode, and power transfer characteristic for different air gap. When the system worked at Zero Voltage Switch mode and the input voltage was 290V, the prototype’s maximum output power was 3.75kW, and the overall efficiency was 89%.The characteristic of closed-loop ICPT system was preliminary researched. By changing the phase-shift angle to obtain different output characteristic and testing the open-loop bode plot, the PI control parameters was determined. The output voltage could keep stable while the load varied by adjusting the phase-shift angle. When the input voltage was 290V, the output voltage was stable at 260V and the maximum output power was 2kW.更多还原