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5. SIMULATION RESULTS <strong>AND</strong> CASE STUDIES Mustafa İNCİ Table 5.5. Simulation parameters of Full Bridge DC-DC Converter DVR (DC-DC Converter) Transformer Rating 0.5 MVA Turn ratio (Ns/Np) 2/1 Input Capacitor (C1) Output Capacitor (C eq ) Input Voltage Output Voltage 5 mF 25 mF 0.85 kV(dc) 1.7 kV(dc) Table 5.6. Injection Transformer Parameters Injection Transformer (TR) Transformer MVA Base Operation Frequency Turns Ratio Leakage Reactance 1 MVA 50 Hz 1.2 / 2.4 kV 0.001 pu 5.1. Comparison of Sag Detection Methods (EPLL, SRF and SogiPLL) Voltage sag/swell must be detected fast and compensated accurately. The sag inception is defined as the instant, when the RMS voltage (Vrms) of the supply drops below 0.9 p.u. The swell inception is defined as the instant, when the RMS voltage (Vrms) of the supply rises upper than 1.1 p.u. Firstly, unbalance sag condition is considered because of single line-toground fault is the most common type in transmission and distribution systems. Firstly, 30% single-phase voltage sag occurs between 0.3 s < t < 0.4 s. EPLL, SRF and SogiPLL is used to detect single-phase unbalance voltage sag. Figure 5.2 (a), (b) and (c) shows the source-side voltage, voltage sag inception time and magnitude information by using sag detection methods. 85
5. SIMULATION RESULTS <strong>AND</strong> CASE STUDIES Mustafa İNCİ Figure 5.2. (a) Source side busbar voltages, (b) Voltage sag inception time and (c) Magnitude information for three sag detection methods Sag inception times for three methods are given in Table 5.7. 86
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ÇUKUROVA UNIVERSITY INSTITUTE OF N
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ABSTRACT MSc THESIS MODELING AND AN
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ACKNOWLEDGEMENTS First and foremost
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3.2.2.1. Inverters ................
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VII
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LIST OF FIGURES PAGES Figure 1.1. D
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Figure 5.3. Injected voltages by us
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LIST OF SYMBOLS C : DC Link Capacit
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LIST OF ABBREVATIONS A AC APF ASD C
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1. INTRODUCTION Mustafa İNCİ 1. I
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1. INTRODUCTION Mustafa İNCİ 4
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2. POWER QUALITY Mustafa İNCİ 2.1
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2. POWER QUALITY Mustafa İNCİ •
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3. FUNDAMENTALS OF DVR Mustafa İNC
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Page 140 and 141: BIOGRAPHY Mustafa İNCİ was born i
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Page 144 and 145: LIST OF PUBLICATIONS International
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