簡單介紹了三相SPWM逆變器的組成和工作原理,通過計算機對三相SPWM逆變器進行Matlab/SimuLink建模和仿真,研究逆變電路的輸入輸出及其特性。仿真分析經逆變后得到的電壓電流的特性。通過運用Matlab/SimuLink和Power System Block(PSB)電力系統模塊集工具箱仿真環境,對電路進行建模、計算和仿真分析。MATLAB軟件中的SimuLink,是為數不多的完全滿足這些條件和要求的軟件。并且憑借他在科學計算方面的天然優勢建立了從設計構思到最終實現設計要求的可視化橋梁。被廣泛應用于線性系統、非線性系統及數字信號處理的建模和仿真中。
針對使用硬件描述語言進行設計存在的問題,提出一種基于FPGA并采用DSP Builder作為設計工具的數字信號處理器設計方法。并按照Matlab/SimuLink/DSP Builder/QuartusⅡ設計流程,設計了一個12階FIR 低通數字濾波器,通過Quartus 時序仿真及嵌入式邏輯分析儀SignalTapⅡ硬件測試對設計進行了驗證。結果表明,所設計的FIR 濾波器功能正確,性能良好。
Abstract:
Aiming at the problems in designing DSP using HDL,a method of designing DSP based on FPGA which using DSP Builder as designed tool is pointed out.A 12-order low-pass FIR digital filter was designed according to the process of Matlab/SimuLink/DSP Builder/QuartusⅡ, and the design was verified by the timing simulation based on QuartusⅡand practical test based on SignalTapⅡ. The result shows the designed filter is correct in function and good in performance.