并聯(lián)型有源電力濾波器控制方法的統(tǒng)一描述及對比研究

本文研究有源電力濾波器的控制方法。首先對比研究了串聯(lián)型和并聯(lián)型有源電力濾波器的常見控制方法。然后提出一種將并聯(lián)型有源電力濾波器控制為電壓源的控制方法，稱為電壓模式控制。之后，與傳統(tǒng)的電流模式控制方法進行了比較，發(fā)現(xiàn)電流模式控制是電壓模式控制的一種特例，直接控制變流器的輸出電壓更一般。進一步提出并聯(lián)型有源電力濾波器控制方法的統(tǒng)一描述，分析了控制方法有效的必要條件，并系統(tǒng)化地推導出幾種新型控制方法。仿真和實驗證明了推導的新控制方法的有效性。
Abstract: This paper discusses a systematic method to analyze and design the control of parallel active power filters (PAPF). The discussion begins with the comparison of popular control schemes for series and parallel active power filter.Then a new voltage-mode control scheme for PAPF is proposed and compared with current-mode control scheme. With
comparison, the voltage-mode control is found more general than current-mode control, which stimulated further study of a
general expression of the control methods, and leads to a systematic analysis and design method. In a view of the whole
system, a general control diagram is proposed to express any linear control method based on current detection. With different
gains of detected current, different control scheme can be obtained. Although the gain of each current has many options, only
four typical kinds of gains are discussed for simplicity, and then all 64 possible control schemes are obtained from the general control diagram. To verify their validity, necessary conditions are proposed, with which several new voltage-mode control schemes are derived in a systematic way. Their validity is verified by both time-domain computer simulations and experimental tests on hardware prototypes.
關鍵詞﹕諧波補償；有源電力濾波器；電壓模式控制；電流模式控制；
Keywords: Harmonics Compensation; Active Power Filter; Voltage-Mode Control; Voltage-Mode Control