應用改良型非線性控制於單相主動式功因修正

Improvement of Nonlinear Carrier Control of Single Active Power Factor Correction

劉明松(Ming-Song Liu)

指導教授 ： 周錦惠 ； 胡國英

國立臺北科技大學/機電學院/電機工程系所/碩士(2006年)

https://doi.org/10.6841/NTUT.2006.00239

摘要

由於廣泛使用電力電子設備造成大量諧波注入電力系統，降低功率因數，劣化了用電品質。因此，為了改善用電品質，早期採用被動式功因修正(Passive Power Factor Correction)，近年來已漸採用主動式功因修正(Active Power Factor Correction)，以降低體積。就主動式功因修正而言，在電路組態及系統控制上仍有許多値得繼續探究、改進之處，以提升其性能及應用層面。於主動式功因修正控制中，非線性控制電路較平均電流控制電路簡單，然而前者之輸入電流諧波成份較大。因此本篇論文主要的目的在於改善單相主動式非線性控制(Nonlinear Carrier Control)功因修正之特性，以降低其諧波，進而提高功率因數。由模擬結果得知功率因數可改善至0.99，而三次諧波也較未改善非線性控制時減少一半。

關鍵字

諧波 ； 功因修正 ； 非線性控制

並列摘要

Recently, power electronics have been widely used, thus causing a great number of harmonics to be injected into the grid and hence degrading the quality of the utility. Therefore, power factor correction has been employed to overcome this problem. There are two types of power factor correction, passive and active. The former has larger size than the latter, which is the reason why the active power correction is widely preferred and deeply investigated. In this paper, modification of the nonlinear carrier control of the single active power factor correction is presented and applied to a boost-type converter. Based on this, the harmonics with the proposed feedforward control applied to the nonlinear carrier control are reduced greatly and hence the corresponding power factor is increased significantly. The detailed derivation of the nonlinear carrier control is described herein and then some simulation and experimental results are provided to demonstrate the effectiveness of the proposed control strategy.

並列關鍵字

Harmonics ； Power Factor Correction ； Nonlinear Carrier Control

參考文獻

[13] 陳俊瑋，並聯主動式電力濾波器之設計與研製，碩士論文，國

[14] 林文康，通信機房電力諧波分析，碩士論文，國立中原大學電

single phase power factor correction approach with

[7] W. Zhang, G.. Feng, Y.-F. Liu and B. Wu, "A New Duty

[10] UC3854; Application Note, Texas Instruments, 1999.