【作者】 张浩；

【导师】 张波； 蓝天；

【作者基本信息】 华南理工大学 ， 电气工程， 2012， 硕士

【摘要】 LED具有高效、耐用、节能、安全等优点，在照明领域拥有非常广阔的前景，正逐步取代传统的照明设备，成为新生代照明光源。目前，小功率LED照明应用已经初具规模并逐渐走向成熟，但在大功率LED照明领域应用较少，市场发展潜力很大。LED的高效节能需要有较高可靠性的驱动电源作为保证，以使LED照明的节能潜力得到充分发挥。本文设计的驱动电源共分为四级：整流电路、PFC电路、半桥LLC谐振电路和恒流电路，将着重对功率因数校正电路和半桥LLC谐振电路进行研究与分析。在对PFC电路的研究中，本文介绍了PFC电路的优势、工作原理和工作模式，并结合设计要求提出了完整的参数设计方法。在对半桥LLC谐振电路的研究中，本文介绍了电路的工作原理和工作模式，并设计了恒流控制回路，最终结合设计要求提出了完整的参数设计方法。文章最后制作了一台150W半桥LLC谐振驱动电源，并对该电源进行了详细的测试，对实验数据和波形进行了详细的分析，证明满足设计要求，同时验证了本文理论分析的正确性和技术的可行性。更多还原

【Abstract】 LED has the advantage of high efficiency、durable、energy saving、and safety, it has abroad prospect in lighting field, and gradually replace the traditional lighting equipment tobecome a new generation of lighting source. At present, the application of small power LEDhave begun to take shape and gradually mature, but the high power LED application is less, soit has great market potential. The high efficiency and energy saving of LED need a guaranteeof high reliability driving power supply, in order to make full play of energy saving potential.The driving power presented in this paper is divided into four part: rectifier circuit, PFCcircuit, half bridge LLC resonant circuit and constant current circuit, research and analysiswill focus on PFC circuit and half bridge LLC resonant circuit.In research of PFC circuit, the advantages、working principle and working mode wereintroduced, and a complete design method of parameter was put forward combined withdesign requirements.In research of half bridge LLC resonant circuit, the working principle and working modewere introduced, and the constant current control circuit was designed, finally a completeparameter design method was put forward combined with design requirements.Finally, a150w LLC resonant driving power supply was made, and detailed test、detailedanalysis of test data and waveform were carried on. The result show that the designrequirements were met, meanwhile the correctness of theoretical analysis and feasibility oftechnology were verified.更多还原