Overview
The Sensorless High-Speed SR Motor Control Reference Design based on the NXP® low-cost MC56F8013 digital signal controller (DSC) deals with a 2-phase switch reluctance (SR) motor sensorless drive for vacuum cleaners and other air movement applications.
- The application is a speed-open loop SR drive without any position or speed sensor needs
- Uses a sensorless control method based on current peak detection and a patented start-up algorithm (Patent No. US6448736 B1)
- The control technique allows the SR motor more than 100 000 RPM
- The application is primarily for vacuum cleaners, although it can be used for any application with a high-speed drive (50 000 RPM)
Features
- High-speed 2-phase SR motor sensorless control based on a current peak detection
- Designed for vacuum cleaner applications
- Capable of running SR motors at more than 100.000 RPM (tested with SR motor designed for 60 000 RPM)
- Single direction rotation enabled by asymmetric of 2-phase SR motor
- Speed open loop
- Start-up from any position using alignment and patented algorithm (Patent No. US6448736 B1)
- Start-up time and maximum speed depends on SR motor parameters
- Manual interface and FreeMASTER control page for monitoring, control and tuning
