无线电能传输系统LLC型复合谐振模式研究
发布时间：2019-06-20 05:12
【摘要】：无线电能传输(Wireless Power Transfer,WPT)技术,是一种使用电磁场为传能媒介,从而实现电能在空间上无线传输的技术。它植根于控制技术、电力技术和电子技术这三门技术领域,一直受到研究者的密切关注。通过WPT技术能避免用电设备和供电端的电气接触,确保了供电体系的稳定性和安全性。在磁场型WPT系统中,处于松耦合状态的发射线圈和接收线圈实现了能量的传递,加之补偿电路的存在,整个系统是一个复杂的高阶非线性系统。为了提高系统的传能能力,需确保系统运行在高频条件下,此时系统对频率变化十分敏感。实际应用中,线圈相对移动导致的互感变化和负载变化都可能对系统的谐振匹配造成影响,从而导致谐振频率的漂移等问题,这对电路的功率传输等级和效率都有十分严重的影响。如何通过控制和电路方式解决系统对互感和负载变化的频率敏感性,提升工作频率的稳定度十分具有研究价值。本文针对于此提出了在系统中采用LLC复合谐振电路的方法。本文围绕WPT系统中补偿电路的研究,主要做了以下的工作:(1)介绍了WPT系统中谐振补偿电路的作用,介绍了基本的谐振拓扑,并分析了已有拓扑的一些特点,然后提出了应该采用的复合谐振拓扑模式,并提出采用LLC复合谐振拓扑这一方案。(2)提出了一种具有双边LLC复合谐振结构的WPT系统,详细分析了其谐振条件及相应的证明过程。用阻抗模型对系统进行了详细的分析,得到了系统所具有的特性,并推导出了相应的输出表达和功率表示。(3)针对双边LLC结构过于复杂这一缺点,提出了S-LLC型简化拓扑,从阻抗模型验证了该拓扑依旧具有双边LLC系统具有的频率特性,并推导了此时的系统输出表达,并提出了一种可运用于该系统的移相控制方式。(4)对LLC复合谐振拓扑引入后的系统参数设计与优化进行了概括的分析,说明了并联电感Lm和负载取值在非理想参数条件下对系统性能的影响,并给出了一个比较合理的参数取值范围。(5)根据分析的S-LLC系统的输出特性和控制进行了仿真和实验来验证相关理论推导特性。
[Abstract]:Radio energy transmission (Wireless Power Transfer,WPT (Radio Energy Transmission) technology is a kind of technology which uses electromagnetic field as energy transmission medium to realize wireless transmission of electric energy in space. It is rooted in the three technical fields of control technology, power technology and electronic technology, and has been paid close attention by researchers. Through WPT technology, the electrical contact between electrical equipment and power supply terminal can be avoided, and the stability and safety of power supply system can be ensured. In the magnetic field WPT system, the transmitting coil and the receiving coil in the loose coupling state realize the energy transfer, coupled with the existence of the compensation circuit, the whole system is a complex high-order nonlinear system. In order to improve the energy transmission ability of the system, it is necessary to ensure that the system runs under the condition of high frequency, and the system is very sensitive to the frequency change. In practical application, the mutual inductance change and load change caused by the relative movement of coil may affect the resonance matching of the system, which leads to the drift of resonance frequency, which has a very serious influence on the power transmission level and efficiency of the circuit. How to solve the frequency sensitivity of the system to mutual inductance and load change through control and circuit, and how to improve the stability of working frequency is of great research value. In this paper, a method of using LLC composite resonant circuit in the system is proposed. Based on the research of compensation circuit in WPT system, the main work of this paper is as follows: (1) the function of resonant compensation circuit in WPT system is introduced, the basic resonant topology is introduced, and some characteristics of existing topology are analyzed, and then the composite resonant topology mode that should be adopted is put forward, and the scheme of adopting LLC composite resonant topology is proposed. (2) A WPT system with bilateral LLC composite resonant structure is proposed. The resonance conditions and the corresponding proof process are analyzed in detail. The impedance model is used to analyze the system in detail, the characteristics of the system are obtained, and the corresponding output representation and power representation are derived. (3) in view of the fact that the bilateral LLC structure is too complex, the S-LLC simplified topology is proposed, and the impedance model verifies that the topology still has the frequency characteristics of the bilateral LLC system, and deduces the output expression of the system at this time. A phase shift control method which can be used in the system is proposed. (4) the design and optimization of system parameters after the introduction of LLC composite resonance topology is analyzed, and the influence of parallel inductance Lm and load value on the performance of the system under the condition of non-ideal parameters is explained. A reasonable range of parameters is given. (5) according to the output characteristics and control of the analyzed S-LLC system, simulation and experiments are carried out to verify the theoretical derivation characteristics.
【学位授予单位】：重庆大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TM724
本文编号：2502963
[Abstract]:Radio energy transmission (Wireless Power Transfer,WPT (Radio Energy Transmission) technology is a kind of technology which uses electromagnetic field as energy transmission medium to realize wireless transmission of electric energy in space. It is rooted in the three technical fields of control technology, power technology and electronic technology, and has been paid close attention by researchers. Through WPT technology, the electrical contact between electrical equipment and power supply terminal can be avoided, and the stability and safety of power supply system can be ensured. In the magnetic field WPT system, the transmitting coil and the receiving coil in the loose coupling state realize the energy transfer, coupled with the existence of the compensation circuit, the whole system is a complex high-order nonlinear system. In order to improve the energy transmission ability of the system, it is necessary to ensure that the system runs under the condition of high frequency, and the system is very sensitive to the frequency change. In practical application, the mutual inductance change and load change caused by the relative movement of coil may affect the resonance matching of the system, which leads to the drift of resonance frequency, which has a very serious influence on the power transmission level and efficiency of the circuit. How to solve the frequency sensitivity of the system to mutual inductance and load change through control and circuit, and how to improve the stability of working frequency is of great research value. In this paper, a method of using LLC composite resonant circuit in the system is proposed. Based on the research of compensation circuit in WPT system, the main work of this paper is as follows: (1) the function of resonant compensation circuit in WPT system is introduced, the basic resonant topology is introduced, and some characteristics of existing topology are analyzed, and then the composite resonant topology mode that should be adopted is put forward, and the scheme of adopting LLC composite resonant topology is proposed. (2) A WPT system with bilateral LLC composite resonant structure is proposed. The resonance conditions and the corresponding proof process are analyzed in detail. The impedance model is used to analyze the system in detail, the characteristics of the system are obtained, and the corresponding output representation and power representation are derived. (3) in view of the fact that the bilateral LLC structure is too complex, the S-LLC simplified topology is proposed, and the impedance model verifies that the topology still has the frequency characteristics of the bilateral LLC system, and deduces the output expression of the system at this time. A phase shift control method which can be used in the system is proposed. (4) the design and optimization of system parameters after the introduction of LLC composite resonance topology is analyzed, and the influence of parallel inductance Lm and load value on the performance of the system under the condition of non-ideal parameters is explained. A reasonable range of parameters is given. (5) according to the output characteristics and control of the analyzed S-LLC system, simulation and experiments are carried out to verify the theoretical derivation characteristics.
【学位授予单位】：重庆大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TM724
【参考文献】
相关期刊论文 前10条
1 颜湘武;杨利鸣;梁宵;赵慧超;张波;;一种高效隔离的双向DC/DC变换器[J];华北电力大学学报(自然科学版);2013年04期
2 戴欣;施惠;孙跃;;复合谐振型非接触电能双向传输模式[J];西南交通大学学报;2013年03期
3 杨芳勋;孙跃;戴欣;;多负载感应耦合电能双向传输的仿真[J];中南大学学报(自然科学版);2012年10期
4 赵志斌;孙跃;周诗杰;田勇;;非接触电能传输系统参数优化的改进遗传解法[J];西安交通大学学报;2012年02期
5 戴欣;孙跃;苏玉刚;王智慧;唐春森;;感应电能传输系统参数辨识与恒流控制[J];重庆大学学报;2011年06期
6 戴欣;孙跃;;感应电能传输系统能量注入控制方法研究[J];电子科技大学学报;2011年01期
7 孙跃;李砚玲;;非接触传输系统的广义状态空间平均法分析[J];同济大学学报(自然科学版);2010年10期
8 戴欣;孙跃;苏玉刚;唐春森;王智慧;;非接触电能双向推送模式研究[J];中国电机工程学报;2010年18期
9 孙跃;王智慧;苏玉刚;戴欣;唐春森;;电流型CPT系统传输功率调节方法[J];重庆大学学报;2009年12期
10 孙跃;卓勇;苏玉刚;王智慧;唐春森;;非接触电能传输系统拾取机构方向性分析[J];重庆大学学报(自然科学版);2007年04期
相关博士学位论文 前2条
1 夏晨阳;感应耦合电能传输系统能效特性的分析与优化研究[D];重庆大学;2010年
2 王智慧;基于包络线调制的非接触电能传输模式研究[D];重庆大学;2009年
相关硕士学位论文 前5条
1 曹伟华;ICPT系统双AC-DC-AC型拓扑与控制策略研究[D];重庆大学;2014年
2 石佳;多功率等级ICPT系统的线圈优化设计[D];重庆大学;2014年
3 杨敏;PWM加移相控制双有源全桥双向DC-DC变换器的研究[D];南京航空航天大学;2013年
4 蒋磊磊;电动汽车应急充电用非接触双向谐振变换器的研究[D];南京航空航天大学;2013年
5 张凯;非接触供电技术及其水下应用研究[D];国防科学技术大学;2008年
，本文编号：2502963
本文链接：https://www.wllwen.com/kejilunwen/dianlidianqilunwen/2502963.html
