具有功率分配之變頻器模組並聯系統的研製

Design and Implementation of Paralleled Multi-Inverter System with Power Distribution

陳彥勳(Yen-Shyun Chen)

指導教授 ： 賴炎生

國立臺北科技大學/電資學院/電機工程系研究所/碩士(2012年)

https://doi.org/10.6841/NTUT.2012.00511

摘要

本論文主要研製一具有功率分配之直流/交流變頻器模組的並聯系統，此系統主要包含兩台直流/交流變頻器、電壓控制器及功率分配之電流控制器；電壓控制迴路用以調節輸出電壓，而電流控制器則用以調節數位控制器所分配之電流命令，達到各級所分配的功率。
本文單相直流/交流變頻器，採用全橋式轉換器為變頻器之功率架構，開關切換方式採用單極性電壓切換技術，且利用Microchip公司之dsPIC30F2023作為控制核心，設計規格為輸入直流電壓400V，輸出交流電壓220 Vrms/60 Hz，開關切換頻率為9.6 kHz，系統的輸出額定功率為3000W。由模擬結果與硬體的實測驗證可知，本架構之直流/交流變頻器並聯系統，在輸入電壓400V及各負載條件下，系統效率高達97%以上，輸出電壓總諧波失真小於5%。

關鍵字

功率分配 ； 直流/交流變頻器 ； 並聯系統

並列摘要

The main objective of this thesis is to design and implement a DC/AC paralleled multi-inverter system with power distribution control. The system consists of two paralleled DC/AC inverters, a voltage controller and current controller for each inverter module. The output voltage is controlled by voltage control loop and current command is assigned by digital controller while being regulated by current control loop for power distribution control.
The power stage of DC/AC inverter is designed with full-bridge topology. The power stage is controlled with unipolar switching technique. A Microchip dsPIC30F2023 is used as the control unit. The design specifications including: input DC voltage = 400 V, output voltage = 220 Vrms/60 Hz, switching frequency = 9.6 kHz, and rated power = 3000W. Simulation and experimental results will verify the power distribution control of the DC/AC paralleled multi-inverter system. It will be shown by experimental results that the system efficiency goes up to 97% with 400V DC input voltage under various load condition, and total output voltage harmonic distortion less than 5%.

並列關鍵字

Power Distribution ； DC/AC Inverter ； Paralleled multi-module

參考文獻

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