47等一会儿聪聪.ppt

对数字化控制不间断电源系统的探讨
摘要
如今,高性能、高效率、小型轻量化和智能监控越来越成为各类不间断电源追求的目标,而数字控制技术的应用使得这些目标的实现更为简单。因此,对数字化控制不间断电源系统的探讨是十分必要和有意义的。
首先探讨了不间断电源的硬件架构,重点讲述了功率因数校正的整流器和逆变器主电路结构。以均值电流型功率因数校正技术为例详细分析了功率因数校正电路的工作原理,并给出了设计思路和设计时应注意的问题。对不间断电源的核心—逆变器在连续状态和离散状态下进行了模型分析,指出逆变器模型是一个双输入单输出的非线性模型,但是其非线性仅体现在负载扰动上。
在硬件架构的基础上还介绍了系统的软件功能。对不间断电源和市电之间的整流问题进行了深入的探讨,分析了整流的理论基础。对逆变器的控制技术,采用工程中应用广泛的PID控制器提高其动态性能和稳定性,介绍了参数的设计,并通过仿真详细分析其稳态和动态性能,对参数加以修正。
关键词:不间断电源、功率因数校正、均值电流控制、整流。
ABSTRACT
Today, high-performance, high efficiency, small lightweight and intelligent monitoring various types of uninterrupted power supply has increasingly e the goal, and digital control technology allows the realization of these objectives is more simple. Therefore, digital control system of uninterrupted power supply is necessary and meaningful.
First, the uninterrupted power supply of the hardware architecture to highlight the power factor correction rectifier and inverter main circuit structure. The average current mode power factor correction technology as an example a detailed analysis of power factor correction circuit works, and gives design ideas and should pay attention to the problem. The core of the uninterrupted power supply - inverter in continuous state and discrete state model under analysis, pointed out that the inverter model is a two-input single-output nonlinear model, but only reflected in the nonlinear disturbances on the load .
Based on the hardware architecture of the system also introduced software features. For uninterrupted power supply and electricity issues between the tracking phase-locked-depth discussions, analysis of the theoretical basis of lock-in technique, summarizes the analysis of two phase locking algorithm and the process and their respective lock algorithm. The inverter control technology, engineering PID controller is widely used in improving the dynamic performance and stability, the design parameters are introduced, and through detailed analysis of the steady-state simulation