Development Of Detailed Drive Model In Matlab/Simulink With Automatic Optimization Of Control Loops
Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
The use of motors has increased tremendously in industry because of diverse applications and fast development in power electronics. These technological advancements helping the manufactures to develop most suitable and low cost technologies. In past, typical applications for motors were in centrifugal pumps, fan drives, washing machines and in low cost electrical appliances where information regarding angular speed and rotor angle were of low interest, for control algorithms. These control algorithms were simple and drives were used in sensorless mode. The drawback of this technique is the speed dependency on external load torque. So, this method is not applicable in areas of high dynamic performance. But in last few years dynamic performance is the real concern because electric motor is now a necessary and indispensable source of power in many industries. Motors have many applications in automotive, medical and in space science which require very precise motion control. The purpose of this report is to develop detail drive model of permanent magnetic synchronous motor in Matlab/Simulink. Vector control technique is used to vary the speed of motor in wide range. While developing the simulation model, realistic components are considered so results obtained through simulation should be very close to real systems. All blocks in simulation model can handle data up to 16 bits. A cascaded closed loop control system for the PI controller is designed to operate in torque and flux weakening region. This PI controller is capable of controlling the speed for all unsigned values in 16 bit range (0 to 65,535). The system information is obtained by step response technique. For automatic tuning of the controller Relay Feedback technique from Åström and Hägglund is used. Graphical User Interface (GUI) is developed for the drive system. Different standard methods such as Ziegler Nichols Step Response, Ziegler Nichols Frequency Response, Cohen Coon and Tyreus-Luyben is used to get best tuned parameters for proportional and integral gain.
Place, publisher, year, edition, pages
2012. , 101 p.
Technology, Relay Feedback Technique, Speed Control, ZNFR, ZNSR, PI Controller
IdentifiersURN: urn:nbn:se:ltu:diva-49815Local ID: 72151e3a-27dd-455f-b585-8fc704afb19cOAI: oai:DiVA.org:ltu-49815DiVA: diva2:1023163
Subject / course
Student thesis, at least 30 credits
Space Engineering, master's level
Montenegro, SergioBirk, Wolfgang
Validerat; 20130207 (global_studentproject_submitter)2016-10-042016-10-04Bibliographically approved