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Position Sensorless Control of Switched Reluctance Motor with Consideration of Magnetic Saturation Based on Phase-Inductance Intersection Points Information
- Source :
- Energies, Volume 11, Issue 12, Energies, Vol 11, Iss 12, p 3517 (2018)
- Publication Year :
- 2018
- Publisher :
- MDPI AG, 2018.
-
Abstract
- The precise estimation of position is an essential concern for the control of a switched reluctance motor (SRM). Given the prominent role of position, the promising sensorless control approach for an SRM drive should be capable of providing accurate position. An inductance-based approach has been widely applied in the position estimation. However, the estimated accuracy suffers from the magnetic saturation effect, resulting in the poor performance of sensorless operation. This paper presents a reversible synchronization of commutation with the corresponding rotor position for SRM. With the consideration of magnetic saturation, the proposed approach is taken as a suitable candidate and plays an essential role in accommodating the requirement of optimal control. The relationship between a typical inductance position and magnetic circuit saturation is investigated. The instant of the intersections is sensed by comparing the instantaneous inductance of adjacent phases. Thus, the predicted position is obtained with the information of the special point and the calculated average speed. Compared with other existing methods, the proposed approach has the certain advantages, such as the ability to update the estimated speed and position six times per electrical period, which guarantees the estimated accuracy. The proposed approach is also valid even when the motor is operated at an acceleration state and heavy load operation. In addition, the requirement of the educated inductance structure is not unnecessary, less memory space is needed in the chip, and the accumulated error is eliminated. The simulation and experimental findings demonstrate the feasibility and practicality of the proposed position estimation approach with carrying out the inertial operation, load mutation, and high-speed test.
- Subjects :
- 0209 industrial biotechnology
Control and Optimization
Computer science
position sensorless control
Energy Engineering and Power Technology
02 engineering and technology
lcsh:Technology
law.invention
Synchronization (alternating current)
Acceleration
020901 industrial engineering & automation
law
Position (vector)
Control theory
magnetic saturation
0202 electrical engineering, electronic engineering, information engineering
Electrical and Electronic Engineering
Engineering (miscellaneous)
typical intersection position
switched reluctance motor
lcsh:T
Renewable Energy, Sustainability and the Environment
Rotor (electric)
020208 electrical & electronic engineering
Building and Construction
Optimal control
Switched reluctance motor
Magnetic circuit
Inductance
Energy (miscellaneous)
Subjects
Details
- ISSN :
- 19961073
- Volume :
- 11
- Database :
- OpenAIRE
- Journal :
- Energies
- Accession number :
- edsair.doi.dedup.....b0cd5a8958572886f5941277b20bd142