具有定電流控制之全數位DC/AC轉換器設計與實現

Design and Implementation of a Current-Controlled DC/AC Converter Using DSP

蔡志仁(Chih-Jen Tasi)

指導教授 ： 黃明熙

國立臺北科技大學/電資學院/電力電子產業研發碩士專班/碩士(2007年)

https://doi.org/10.6841/NTUT.2007.00056

摘要

近年來，國際上避免全球暖化之主要能源政策，綠色能源應用是越來越重要。小型分散式發電系統已廣泛設置利用，且數量逐年成長，例如，電力儲能設備、太陽能電力系統與風力發電系統均已有效與市電系統並聯運轉。
本文DC/AC inverter主要針對太陽能提供之DC電源與市電產品或市電並聯為目的，電路以全橋電路為主架構，利用正弦脈波寬度調變，控制電流為定電流輸出，且透過數位信號處理器(TMS320LF2407)，將其數位化，並研製一具輸入電壓為直流200V、輸出電壓為交流110V/60HZ、輸出功率250W的電力轉換器。
本文成功的研製出一定電流輸出直流-交流轉換器,將太陽能輸出之DC電源轉變成可獨立操作或與市電並聯之系統。

關鍵字

數位信號處理器 ； 全數位 ； 分散式發電系統 ； 市電系統

並列摘要

In recent years, green energy applications are getting more and more attractive in the world due to the problem in earth warming. Therefore, Small-distributed power systems, such as energy storage devices, solar power systems, wind-force power system, etc, are widely installed, which can effectively cooperate with grid systems in offering the power to the load. Based on the mention above, The purpose of this thesis is to design a solar power system, which can be paralleled with the grid system. Such a system is mainly implemented based on a full-bridge circuit under the sinusoidal-pulse-width-modulation (SPWM) control, so as to keep its output current constant at some value. Besides, via the digital signal processor (DSP), named as TMS320LF2407, the overall system is under fully-digitalized control. And, the specifications of the proposed inverters are the input DC voltage of 200V, the output AC voltage of 110V/60Hz and the output power of 250W.
In this thesis, a DC/AC inverter with a constant-current output is developed, which can successfully transfer the DC output voltage of the solar energy to the system that can operate independently or cooperate with the grid system.

並列關鍵字

Grid System ； Digital Signal Processor ； Fully-Digitalized control ； DC/AC converter ； Distributed Power System

參考文獻

[5] 鄭晨維， “以數位訊號處理器實現多模組並聯之直流-交流轉換器” ，國立台北科技大學電機工程系電力電子產業研發碩士專班碩士學位論文，民國96年。

[24] 葉柏毅， “以數位訊號處理器實現太陽能變頻器” ，國立台北科技大學電機工程系電力電子產業研發碩士專班碩士學位論文，民國96年。

[1] S. B. Kjaer and F. Blaabjerg, “Design optimization of a single phase inverter for photovoltaic applications,” in Proc. IEEE PESC’03, vol. 3, pp. 1183-1190, 2003.

[6] T. Shimizu, M. Hirakata, T. Kamezawa, and H. Watanabe, “Generation control circuit for photovoltaic modules,” IEEE Trans. Power Electron., vol. 16, no. 3 pp.293-300, 2001.

[8] J. M Peter, J. Jansen Mark,” Zero-Crossing Distortion in Grid-Connected PV Inverters,” IEEE Trans. on Industrial Electron., vol. 52, no. 2 pp.558-565,April 2005.