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Über dieses Buch

This book describes two target applications for synchronous systems: regulated 3-phase voltage supply and voltage sag mitigation. It presents a detailed design procedure for converter switches and filters considering all steady-state, commutation and dynamic requirements. This work has evolved from previously published research by the authors, which in turn is part of a larger effort to expand the application domain of matrix converters to power systems. The objectives of the work have been categorized into the following: developing a dynamic model that provides adequate design insights; designing filters; and devising a control scheme. The low frequency dynamic model is first analyzed for regulated voltage supplies assuming balanced system. The system is modeled relative to a synchronous rotating (dq) frame linearized around an operating point. The input–output variables are related by non-diagonal transfer function matrices. Individual transfer function sub-matrices are sequentially investigated and it is shown that, depending on the input power, input voltage and filter parameters, the appearance of a set of right half zeros is possible. The book then considers filter design, as well as general issues like ripple attenuation, regulation, reactive current loading, and filter losses. The book also addresses additional constraints that may be imposed by dynamic requirements and commutation. In the third stage, voltage controller design is detailed for a 3-phase regulated voltage supply. In dq domain, output voltage control represents a multivariable control problem. This is reduced to a single variable control problem while retaining all possible right half zeros, thereby preserving the internal stability of the system. Consequently, the standard single variable control design technique has been used to design a controller. The analytically predicted dynamic response has been verified by experimental results. It was possible to operate the system beyond the critical power boundary where the right half zeros emerge. Lastly, the developed control approach has been extended to voltage sag mitigation with adequate modifications. A 3-wire linear load and both symmetrical and asymmetrical voltage sags have been considered. Experimentally obtained response time for sag mitigation was found to be less than the power supply holdup time of most of the sensitive equipment. This book will be useful to both researchers and graduate students.

Inhaltsverzeichnis

Frontmatter

Chapter 1. Introduction

Abstract
Matrix Converter (MC) is a class of switched mode power converters (SMPC) which contains only semiconductor devices in its power processing stage.
Anindya Dasgupta, Parthasarathi Sensarma

Chapter 2. Low Frequency Dynamic Model

Abstract
Like other converters in the switched mode power converter family, operation of Matrix converters involves two significant frequency components.
Anindya Dasgupta, Parthasarathi Sensarma

Chapter 3. Filter Design

Abstract
This chapter details design of input and output filters for a 3-Ph MC.
Anindya Dasgupta, Parthasarathi Sensarma

Chapter 4. Controller Design for Regulated Voltage Supply

Abstract
Controller design for applications requiring regulated 3 phase sinusoidal voltages is discussed and relevant experimental results are presented in this chapter. The controller design is based on the dynamic model described in Chap. 2. The model represented a two input—two output system and thus the controller cannot be designed by directly applying single variable based design methods.
Anindya Dasgupta, Parthasarathi Sensarma

Chapter 5. Voltage Sag Mitigation

Abstract
Performance of Matrix converter as a voltage sag compensator for linear loads has been described in this chapter. In power quality (PQ) parlance, the term voltage sag is used to designate a dip in the supply voltage magnitude over a small time duration which can extend over few cycles [48, 49].
Anindya Dasgupta, Parthasarathi Sensarma

Chapter 6. Conclusion

Abstract
In this work a design approach has been formulated for 3-phase direct Matrix Converters for selected synchronous applications with linear load.
Anindya Dasgupta, Parthasarathi Sensarma

Backmatter

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