由於半導體技術的快速發展，二極體、閘流體等非線性負載在各式應用中廣
泛使用。這類非線性負載會在交流端產生大量諧波，在系統上造成諧波電壓電流
的汙染。在工業配線系統中，在用戶端點上安裝被動濾波器為處理諧波問題的典
型方案之一。然而這種但是隨著系統負載的變動，饋線電感、負載電感、變壓器
及濾波器等元件之間可能產生互相作用，進而產生諧波共振。諧波共振會在系統
上產生大量諧波電壓電流，使其電力品質嚴重惡化。
本文提出一併聯式混合式主動濾波器，來抑制工業配線系統中非線性負載所
產生的諧波失真。該混合式主動濾波器主要由一主動濾波器以及一調頻至七次諧
波頻率的被動濾波器。在本文所提出之控制設計下，該混合式主動濾波器可視為
諧波電導，以抑制安裝點上的諧波電壓。藉由一諧波電導控制器，來及時諧波電
導值調整並維持諧波電壓失真，以符合IEEE std. 519-1992 的標準規範。混合式
主動濾波器的電容在使用時將承擔該端點的基頻電壓，並允許反流器得以較低的
容量額定來加以操作。此外，本文提出一直流端電壓控制器以對直流端電容電壓
進行充電，並維持在操作電壓。不同於傳統控制器，該控制器乃是藉由控制領先
基頻電流來進行充電，而非傳統方法中直接從安裝端點處抽取基頻電流。本文使
用程式模擬以及實驗機台的量側結果，來驗證所提出的併聯式混合式主動濾波器
的特性以及功效。

Due to the drastic development of semiconductor, nonlinear loads are widely
used in high-power applications, which results in harmonic distortion of current and
voltage in the power system. Installation of passive filter is one of the conventional
solutions to harmonic distortion. But line impedance, load inductors and/or filter
components may result in harmonic resonance, which amplifies the harmonic
components, and worsens the harmonic distortion and power quality.
This thesis proposed a control algorithm of shunt hybrid active filter to suppress
the harmonics and prevent harmonic resonance in industrial facilities. The hybrid
active filter is composed of an active filter and a seventh-harmonic frequency tuned
passive filter. The hybrid active filter functions as damping conductance for harmonic
frequencies. A dynamical tuning control is realized to adjust the damping conductance
for maintaining the voltage harmonic distortion. The suppressed harmonic distortion
is conformed to the harmonics limitation, such as IEEE std. 519-1992. The capacitors
of the hybrid filter sustain fundamental grid voltage and allow the inverter to operate
in lower kVA rating. In addition, a dc bus controller was designed to hold the
capacitor voltage by controlling the fundamental leading current. The simulations and
laboratory results are provided to verify the effectiveness on suppressing harmonic
resonance.

Contents
誌謝辭 IV
摘要 V
Abstract VI
Contents VII
List of Figures IX
List of Tables XI
CHAPTER 1 Introduction 1
1.1 Background and Motive 1
1.2 Objectives 2
1.3 Organization of the thesis 3
CHAPTER 2 Literature Review 4
2.1 Standard of harmonic distortion 5
2.2 Synchronous reference frame 8
2.3 Harmonic Resonance 10
2.4 Pure Shunt Active Filter 11
2.5 Hybrid Active Filter 13
2.5.1 Series Hybrid Active Filter 13
2.5.2 Shunt Hybrid Active Filter 16
2.6 Summary 20
CHAPTER 3 Principles of Operation 21
3.1 Introduction 21
3.2 Principles of Operation 22
3.3 Tuning Control 24
3.4 Current Regulator 25
3.5 DC bus control 26
3.6 Circuit Analysis 27
3.7 Summary 29
CHAPTER 4 Simulation Results 30
4.1 Introduction 30
4.2 Simulation Parameters 31
4.3 Circuit analysis 35
4.4 Current loop analysis 37
4.5 Time-domain Simulation Results 40
4.5.1 Steady-state waveform 40
4.5.2 Transient-state waveform 45
4.6 Summary 47
CHAPTER 5 Laboratory Test Results 48
5.1 Introduction 48
5.2 Laboratory Parameters 48
5.3 Laboratory Results 50
5.3.1 Steady- state laboratory results 50
5.3.2 Transient-state laboratory results 55
5.4 Summary 58
CHAPTER 6 Conclusion 59
Reference 60
Appendix 63

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61
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62
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