Finance

Reduction (mathematics)

Electrical engineering

Physics

Modulation (music)

Engineering

Control engineering

Artificial intelligence

Economics

Power (physics)

Magnet

Voltage

Position (finance)

Programming language

Electronic engineering

Acoustics

Geometry

Control (management)

Machine control

SIGNAL (programming language)

Mathematics

Computer science

Reliability (semiconductor)

Control theory (sociology)

Quantum mechanics

Synchronous motor

Pulse-width modulation

IEEE Transactions on Industrial Electronics

Owing to the competitive advantages of cost reduction, system downsizing, and reliability enhancement, position sensorless control methods for permanent magnet synchronous machine drives have drawn increasing attention from academia to industrial applications. In this article, a survey of the major sensorless control techniques for a wide speed range from low to high speeds is presented. The different high frequency signal injection schemes, fundamental pulsewidth modulation excitation methods, and model-based sensorless control are displayed and compared, which is able to facilitate the sensorless control implementation.

Position Sensorless Permanent Magnet Synchronous Machine Drives—A Review