Sensorless Field Oriented Control (FOC) of a …

AN1078. Sensorless Field Oriented Control of a PMSM. This application note focuses on the PMSM-based Authors: Jorge Zambada and Debraj Deb Sensorless FOC Control of appliances because this Microchip Technology Inc. Control technique offers the greatest cost benefit in appliance motor Control . The Sensorless FOC. technique also overcomes restrictions placed on some INTRODUCTION applications that cannot deploy position or speed Designers can expect environmental demands to sensors because the motor is flooded, or because of continue to drive the need for advanced motor Control wire harness placement constraints. With a constant techniques that produce energy efficient air rotor magnetic Field produced by a permanent magnet conditioners, washing machines and other home on the rotor, the PMSM is very efficient when used in an appliances.

© 2010 Microchip Technology Inc. DS01078B-page 1 AN1078 INTRODUCTION Designers can expect environmental demands to continue to drive the need for advanced motor control

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