應用於不斷電系統之推挽式轉換器及全橋變頻器的研製

Design and Implementation of Push-Pull Converter and Full-Bridge Inverter for UPS Application

陳柏達(Po-Da Chen)

指導教授 ： 賴炎生

國立臺北科技大學/電資學院/電資碩士在職專班研究所/碩士(2014年)

https://doi.org/10.6841/NTUT.2014.00419

摘要

本論文主要研製兩級式單相直流/交流變頻器，第一級採用推挽式波寬調變技術，取得所需輸出電壓大小，再利用第二極輸出換相控制，得到一穩定單相交流電源，做為一般不斷電系統之轉換器系統
本文採全橋式轉換器為變頻器之主架構，架構主要是由六個金氧半場效電晶體、電感及電容所組成，並且利用STMicroelectronics公司之SG3525AP做為第一級推挽式核心控制器與STM32F102C 32-bit MCU做為第二級輸相位控制。
電池輸入電壓: DC 19.5~27V
輸出電壓: AC 220Vrms/50Hz
額定功率: 860W
推挽式轉換器開關頻率: 55kHz
經由實驗結果證明，在輸出220V及各負載條件下，輸出電壓均能穩在額定電壓命令值，在額定負載下，效率高於79%，電壓總諧波失真小於5%，由實驗結果驗證系統的正確性。

關鍵字

不斷電系統 ； 推挽式轉換器 ； 全橋變頻器

並列摘要

A two stage single-phase DC/AC inverter with push-pull pulse width modulation is designed and implemented. The push-pull converter provided first stage 320V output volt, which secondary stage controlled the output phase. In this paper, the topology consists with six MOSFETs, inductors and capacitors. STMicroelectronics SG3525A is used as push-pull control unit and STM32F102C8 32-bit MCU as second stage output phase control. The design specifications are as follows:
Battery Output Voltage: DC 19.5~27V
Output Voltage: AC 220Vrms/50Hz
Rated Power: 860W
Push-Pull Switching frequency: 55 kHz
Under various conditions of load verification, the output voltage can be stabilized within its 230V commend value. Under rated load, the efficiency is higher than 79% and the total harmonic distortion of output current is less than 5%. The experimental results verify the correctness of the system.

並列關鍵字

UPS ； Push-Pull Converter ； Full-Bridge Inverter

參考文獻

[5] 郭建中，應用於不斷電系統之全數位控制升壓轉換器及變頻器的研製，國立台北科技大學電機工程學系碩士學位論文，民國九十九年七月。

[3] 陳良信，利用數位信號處理器為基礎之單相變頻器的研製，國立台北科技大學電機工程系碩士學位論文，民國九十九年七月。

[8] N. Mohan, T. M. Undeland, and W. P. Robbins, Power Electronics: Converters, Applications and Design, 3rd edition. John Wiley and Sons Inc., 2003.

[1] Telles B. Lazzarin, Guilherme A. T. Bauer, and Ivo Barbi, “A Control Strategy for Parallel Operation of Single-Phase Voltage Source Inverters: Analysis, Design and Experimental Results” IEEE Trans. on Industrial electronics, June. 2013.

[2] G. Escobar, A. A. Valdez, J. Leyva-Ramos, and P. Mattavelli, “Repetitive-based controller for a UPS inverter to compensate unbalance and harmonic distortion,” IEEE Trans. on Industry Applications, vol. 54, no. 1, pp. 504–510, Feb. 2007.