| Today, a lot of electric and electronic inverters, alone with nonlinear load have got widely application. However, on the time that they have greatly enhanced the productivity, they have done great harm to power quality of the applied electric system. At the same time, the development of the microelectronics brings a mass of advanced automatic equipments that are sensitive electronic equipments' reliable operation becomes a stringent and important task, which has attracted great attentions specialist from home and abroad.In this paper, we introduced a power quality analyzer based on TI DSP TMS320F2812. The analyzer makes full use of DSP chip's strong operation capability to power quality real-time analysis and displays the results of the analysis, and can provides accurate data to power quality evaluation and improvement.On the foundation of comparing most of the power quality analysis methods, in this paper, we select FFT to be the algorithm of the data processing program. On the basis of real situation and the algorithm, we use A/D converter in TMS320F2812 in sampling analog signals in full period synchronous. The CPLD controlled the full system in logic. Completing the design and fabrication of the system's PCB.On the foundation of the hardware design, we use C Language and Assembly Language in algorithm and software concerning the hardware system. The FFT algorithm was achieved in TMS320F2812.Finally, we make a test for the system. The A/D converting module, data processing module and display module were verified by experiments. The experiments indicate that the system can work and satisfy the acquisitions of the power quality analysis. |
