Direct Power and Torque Control of AC/DC/AC Converter-Fed ...

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Appendices Fig. A. 4. 5. Pictures of the laboratory setup, 1–isolating interface, 2- AC/DC/AC converter constructed based on two VSIs (Danfoss VLT 5005 with replaced control boards), 3– isolating transformer, 4– resistive load, 5– reversible rectifier, 6– motor set, 7– input choke. 152
Appendices Tab. A. 4. 6. Data of the DC Motor on Laboratory setup Nominal power P = 2.7 kW Nominal voltage Nominal current Nominal frequency Base speed N U = 420 V N N I = 8.4 A f Ω SN mN = 50 Hz = 1450 rpm Tab. A. 4. 7.Data of the Supply Line and AC/DC/AC Converter Line voltage U L = 141 V Line frequency f L = 50 Hz DC-link voltage U =560 V Resistive load R DC load = 100 or 150 Ω DC-link capacitor C =470 µF / 47 µF Tab. A. 4. 8. Date of the LCL Input Filter in laboratory setup Line side inductance L 1 = 590 µH Converter side ind. L = 10 mH Resistance of L 1 R 1=0.093 Ω Resistance of L R = 0.08 Ω Filter capacitors C F = 20 µF Tab. A. 4. 9.Data of the inverter VLT 5005 Nominal output power S VLTN = 5.5 kW Nominal power on the shaft of P VLTN = 3 kW the IM fed by VSI Nominal voltage U LN = 380 V Nominal input (line) current I LVLTN = 7 A Nominal output (IM) current I SVLTN = 7.2 A Dead time T D = 2 µs Efficiency 0.96 1) 1) Measured using 30 m screened motor cables at rated load – 3 kW and rated frequency – 3kHz . Two inverters VLT 5005 have been connected through DC-link connectors. The arisen DC-link circuit has been modified as in Fig. A. 4. 6. 153
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POLITECHNIKA WARSZAWSKA WARSAW UNIV
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Acknowledgements The work presented
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Contents 4.2.2. Energy of the DC-li
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Chapter 1 1. Introduction 1.1. AC/D
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1. Introduction Tab. 1. 1. Current
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1. Introduction DC-link voltage to
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1. Introduction then nominal speed
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1. Introduction [69]. From that tim
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Chapter 2 2. Voltage Source Convert
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2. Voltage Source Converters - VSC
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Chapter 3 3. Vector Control Methods
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3. Vector Control Methods of AC/DC/
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Chapter 4 4. Direct Power and Torqu
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4. Direct Power and Torque Control
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Chapter 5 5. Passive Components Des
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5. Passive Components Design 5.2.2.
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5. Passive Components Design a) b)
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5. Passive Components Design C T
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Page 133 and 134: References [18] G. Buja, M. P. Kazm
Page 135 and 136: References [58] J. G. Kassakian, M.
Page 137 and 138: References [96] H. Mao, D. Boroyevi
Page 139 and 140: References [133] A. Tripathi, A. M.
Page 141 and 142: References [167] M. Jasiński, D.
Page 143 and 144: Symbols Employed I L - I LA I r - r
Page 145 and 146: Symbols Employed U pA ,U pB , U pC
Page 147 and 148: A. Appendices A.1. Space vector in
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