FPGA baserad PWM-styrning av BLDC-motorer
Independent thesis Basic level (professional degree)Student thesisAlternative title
FPGA based PWM-control of BLDC motors (English)
This thesis work contains a litterature study about electrical motors in general and how PWM-patterns for brushless DC-motors can be made. A suitable method has been implemented as a simulation model in VHDL. A simulation model of a brushless DC-motor which describes the phasecurrents, torque and angular velocity has also been made. The motor model made simulations easier for the complete PWM-system.
The design was synthesised and tested with a prototypeboard including a SPARTAN II FPGA. In order to test the design, a powerstage and a motor was included. The tests showed that the design was working as expected according to the previous simulations.
A study about an alternative way to control a brushless DC-motor has also been made. This alternative is best suited when the generated back-EMK for the motor is sinusoidal. A simulation model for a part of a system like this has been made, and it has been synthesised in order to examine if it is possible to implement using a FPGA availible today.
Place, publisher, year, edition, pages
Institutionen för systemteknik , 2003. , 73 p.
Electronics, PWM, BLDC, electrical-motors, FPGA, VHDL, back-EMF, SVM, motor-control
Other Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:liu:diva-1728OAI: oai:DiVA.org:liu-1728DiVA: diva2:19053