Space Vector Modulation
IECON'01: The 27th Annual Conference of the IEEE Industrial Electronics Society
SPACE VECTOR MODULATION –An Introduction
== Tutorial at IECON2001==
Dorin O. Neacsu
Correspondence Address: Satcon Corporation, 161 First Street, Cambridge, MA 02142, Email neacsu@earthlink.net I. INTRODUCTION Space Vector Modulation became a standard for the switching power converters and important research effort has been dedicated to this topic. Tens of papers, research reports and patents were developed in the last ten years and the theory of Space Vector Modulation is already wellestablished. Diverse implementation methods were tried and some dedicated hardware pieces were developed based on this principle. The initial use of Space Vector Modulation at three-phase voltage-source inverters has been expanded by application to novel three-phase topologies as AC/DC Voltage Source Converter, AC/DC or DC/AC Current Source Converters, Resonant Three-Phase Converters, B4-inverter, Multilevel Converters, AC/AC Matrix Converters, and so on). This tutorial presents the base theory of SVM when applied to a 3-phase voltage source inverter. II. REVIEW OF SPACE VECTOR THEORY A. History The roots of vectorial representation of three-phase systems are presented in the research contributions of Park [1] and Kron [2], but the decisive step on systematically using the Space Vectors was done by Kovacs and Racz [3]. They provided both mathematical treatment and a physical description and understanding of the drive transients even in the cases when machines are fed through electronic converters. In early seventies, Space Vector theory was already widely used by industry and presented in numerous books. Stepina [4] and Serrano-Iribarnegaray [5] suggested that the correct designation for the analytical tool to analyzing electrical machines has to be “Space Phasor” instead of “Space Vector”. “Space Phasor” concept is nowadays mainly used for current and flux in analysis of electrical machines. B.
SPACE VECTOR MODULATION –An Introduction
== Tutorial at IECON2001==
Dorin O. Neacsu
Correspondence Address: Satcon Corporation, 161 First Street, Cambridge, MA 02142, Email neacsu@earthlink.net I. INTRODUCTION Space Vector Modulation became a standard for the switching power converters and important research effort has been dedicated to this topic. Tens of papers, research reports and patents were developed in the last ten years and the theory of Space Vector Modulation is already wellestablished. Diverse implementation methods were tried and some dedicated hardware pieces were developed based on this principle. The initial use of Space Vector Modulation at three-phase voltage-source inverters has been expanded by application to novel three-phase topologies as AC/DC Voltage Source Converter, AC/DC or DC/AC Current Source Converters, Resonant Three-Phase Converters, B4-inverter, Multilevel Converters, AC/AC Matrix Converters, and so on). This tutorial presents the base theory of SVM when applied to a 3-phase voltage source inverter. II. REVIEW OF SPACE VECTOR THEORY A. History The roots of vectorial representation of three-phase systems are presented in the research contributions of Park [1] and Kron [2], but the decisive step on systematically using the Space Vectors was done by Kovacs and Racz [3]. They provided both mathematical treatment and a physical description and understanding of the drive transients even in the cases when machines are fed through electronic converters. In early seventies, Space Vector theory was already widely used by industry and presented in numerous books. Stepina [4] and Serrano-Iribarnegaray [5] suggested that the correct designation for the analytical tool to analyzing electrical machines has to be “Space Phasor” instead of “Space Vector”. “Space Phasor” concept is nowadays mainly used for current and flux in analysis of electrical machines. B.