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Controller design for a sensorless permanent-magnet synchronous drive system

Controller design for a sensorless permanent-magnet synchronous drive system

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© The Institution of Electrical Engineers
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The paper investigates the design of H2 and H∞ controllers for a permanent-magnet synchronous motor drive system without using shaft-position sensor, and presents the field-weakening control algorithm of the drive system. Robust PI, H2 and H∞ control techniques are applied to design servo controllers. A fully digital control system under the vector control framework is constructed for experimentally verifying controller performance. The theoretical development is validated by experimental work. The paper provides a new approach for designing sensorless AC drives using currently available high performance microprocessors.

Inspec keywords: optimal control; two-term control; permanent magnet motors; microcomputer applications; servomotors; control system synthesis; digital control; synchronous motors; machine control; electric drives

Other keywords: field-weakening control algorithm; H∞ controllers; PI control; vector control; microprocessors; digital control; design; servomotors; H2 controllers; robustness; permanent magnet synchronous motor drive; control system synthesis

Subjects: Control of electric power systems; Optimal control; Small and special purpose electric machines; Drives; Control engineering computing; Synchronous machines; Power engineering computing; Control system analysis and synthesis methods

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