The Simulation Renserch Of New Series Hybrid Active Power Filter And Some Related Problems Analysis

In modern society, the electricity is one of the most widely used energy, its application in the development of a country degree is one of main level, along with the science and technology amount of the national economy. The electric power quality request of more and more high, power quality of national economy is directly related to the overall significance of power quality, the harmonic is an important aspect of the power grid, the harmonic pollution and loss caused by the increasingly serious. Compared with the traditional harmonic treatment technology, active power filter as purifying grid pollution and improve the quality of power supply an effective device, has many obvious advantages in China, there will be broad application prospect. This study of the series active power filter is mixed based on an adjustable circuit reactance of principle, different from the traditional series active filter.This paper established the SHAPF in grid is harmonic equivalent circuit and base wave equivalent models to harmonic equivalent model is derived for a certain number of expression, and the harmonic current determined by equivalent electrical model SHAPF of current control requirements.Through the analysis of the static coordinate transformation and synchronization coordinate transformation, and reveals the two coordinate transform inner link, and combine this research analyzed based on the characteristics of SHAPF synchronous coordinates rotation transformation of harmonic detection principle and realization method. In the low-pass filter design, this paper has compared the low-pass filter and traditional adoption of Butterworth lowpass filters and filter characteristics.Introduces two application in a broad range of modern current control method of the principle, namely the hysteresis current control and triangle wave comparative control, compares the two kinds of advantages and disadvantages of current control method. Combine this paper studies are made of active power filter current control method, and taking the actual project as the object of perovskite-type simulation model is established, the two simulation experiment, simulation analysis on the current controller interfering voltage effect and the improvement measures, simulation experiment 2 analyzes different harmonic current control coefficients on the active filter filtering effect.The experimental research and analysis of the measured wave filter effect...