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Session 3620

DSP based Space Vector Pulse Width Modulation (SVPWM) control for AC Motor Drives

Wajiha Shireen, Rahul. A. Kulkarni University of Houston

I. Abstract:

Space Vector Pulse Width Modulation (SVPWM) is an advanced real time control mechanism that can be used to generate balanced three phase ac voltages of the desired magnitude and frequency at the output of an inverter drive system. SVPWM control implemented in real time using a Digital Signal Processor (DSP) controller has the required features of an advanced motor drive system with fast processing capability and flexibility to implement advanced motor control algorithms. This paper presents the SVPWM strategy in context to how it can be implemented using a DSP. The paper will include analytical equations, software flow diagrams and experimental results from a laboratory prototype drive system.

II. Introduction:

Advanced motor drive systems used in modern equipment and industrial processes require the following features from a typical motor controller - • Fast processing to implement advanced algorithms to minimize torque ripple, on line parameter adaptation, precise speed control etc. • A flexible solution so that future modification can be realized by changing software instead of redesigning a separate hardware platform. • Capability of generating multiple high frequency, high-resolution PWM waveforms. • Implementing multiple features using the same controller (motor control, power factor correction, communication, etc.) • Making the complete implementation as simple as possible (reduced component count, simple board layout and manufacturing etc.). Space Vector Pulse Width Modulation (SVPWM) is an advanced real time control mechanism that can be used to generate balanced three phase ac voltages of the desired magnitude and frequency at the output of an inverter drive. SVPWM control implemented in real time using a DSP controller has the required features of an advanced motor drive system mentioned above. This paper presents the SVPWM strategy in context to how it can be implemented using a Digital Signal Processor (DSP). The paper will include the analytical

Proceedings of the 2004 American Society for Engineering Education Annual Conference & Exposition Copyright © 2004, American Society for Engineering Education

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Kulkarni, R., & Shireen, W. (2004, June), Dsp Based Space Vector Pulse Width Modulation (Svpwm) Control For Ac Motor Drives Paper presented at 2004 Annual Conference, Salt Lake City, Utah. 10.18260/1-2--13173