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

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2. Voltage Source Converters – VSC 2.6. Summary In this Chapter space vector based mathematical model of voltage source converter – VSC operated as voltage source rectifier – VSR-fed DC-link and voltage source inverter – VSI-fed induction motor – IM has been presented and discussed. These models create basis for further chapters of the thesis, especially Chapter 3 and 4 where specific control methods for AC/DC/AC converter-fed IM drive will be discussed and studied. However, presented models are nonlinear. Therefore, it is not straightforward to analyze such systems. One way to avoid the nonlinearities is to linearize around the operating point. Hence, for further considerations will be assumed that model is linearized aroud the setpoint i.e. the steady state of the controlled variable (initial value U dc0 ) is equal to commanded value of this variable e.g U = U dc0 dcc . 32
Chapter 3 3. Vector Control Methods of AC/DC/AC Converter-Fed Induction Motor Drives – A Review 3.1. Introduction In this chapter a main high performance control methods for VSR and VSI will be presented and briefly described. A couple of them will be chosen for control of an AC/DC/AC converter-fed IM drive for further investigation needs. Control of the VSR can be considered as a dual problem with vector control of an induction motor (Fig. 3. 1) [65], [146], [154]. VM U L Control of VSR VSR V-FOC DPC DPC-SVM U dc I dc C I c I load FOC DTC DTC-SVM VSI Control of VSI IM 3 ~ US Fig. 3. 1. Relationship between control methods of VSR and VSI – fed IM Besides of classification as in Chapter 1 control techniques for VSR can be classified in respect to voltage and virtual flux – VF bases. Overall, four types of these techniques can be distinguished:
Page 1 and 2: POLITECHNIKA WARSZAWSKA WARSAW UNIV
Page 3 and 4: Acknowledgements The work presented
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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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5. Passive Components Design Theref
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5. Passive Components Design motor
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Chapter 6 6. Simulation an Experime
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Chapter 7 7. Summary and Conclusion
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7. Summary and Conclusion • easy
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References [18] G. Buja, M. P. Kazm
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References [58] J. G. Kassakian, M.
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References [96] H. Mao, D. Boroyevi
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References [133] A. Tripathi, A. M.
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References [167] M. Jasiński, D.
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Symbols Employed I L - I LA I r - r
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Symbols Employed U pA ,U pB , U pC
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A. Appendices A.1. Space vector in
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Appendices In the special condition
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Appendices A.2. Coordinate Transfor
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Appendices S 3 UI 2 m s * * = = - a
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Appendices Tab. A. 4. 3. Date of th
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Appendices LINE L1 L C F Fig. A. 4.
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Appendices Tab. A. 4. 6. Data of th
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Direct Power and Torque Control of AC/DC/AC Converter-Fed ...

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