scholarly journals Analysis and optimization of speed regulation ability with field weakening of the stator hybrid laminated remanufactured motor

2021 ◽  
Author(s):  
Shouxu Song ◽  
Yan Xia
Keyword(s):  
Field Weakening ◽  
Speed Regulation

scholarly journals Increase the Efficiency of an Induction Motor Feed from Inverter for Low Frequencies by Combining Design and Control Improvements

Energies ◽  
2022 ◽  
Vol 15 (2) ◽  
pp. 530
Author(s):  
Maria Dems ◽  
Krzysztof Komeza ◽  
Jacek Szulakowski ◽  
Witold Kubiak
Keyword(s):  
Energy Savings ◽  
High Efficiency ◽  
Open Loop ◽  
Design Parameters ◽  
Optimal Size ◽  
Low Frequencies ◽  
Field Weakening ◽  
Speed Regulation ◽  
Wide Range ◽  
And Control

Speed-controlled induction motors have the most significant potential for energy savings. The greatest problems with obtaining high efficiency occur in motors with a wide range of rotational speed regulation, as in the motors for driving industrial washing machines under consideration. While for the highest speeds, the dominant phenomenon is at field weakening. The problem is obtaining the optimal size of the magnetic flux for low rotation speed to prevent excessive saturation increasing current, and reduction of efficiency. This problem is usually solved by selecting the appropriate control for an already built machine. The authors propose a combination of activities when designing the motor structure with the selection of proper control, which allows for high efficiency. Since the drive does not require precise speed control or obtaining the required dynamics, it was possible to use an inexpensive control in an open loop, avoiding the cost of transmitters. Furthermore, the number of design parameters that are subject to change is significantly limited by technological factors and the available space in the washing machine. Proper parameter selection was made using a peripheral method assisted by field-circuit simulations. The proposed approach can be used in designing structures and selecting motors controls for other applications.

FIELD WEAKENING CONTROL FOR INDUCTION MOTORS BASED ON COPPER AND IRON LOSSES MINIMIZATION

2020 ◽  
Vol 3 (2) ◽  
pp. 44-57
Author(s):  
Olga Tolochko ◽  
◽  
Danylo Kaluhin ◽  
Stefan Palis ◽  
Serhii Oshurko ◽  
...  
Keyword(s):  
Induction Motors ◽  
Field Weakening ◽  
Iron Losses

Nonlinear MIMO Speed Sensorless Controller for DC Motor Field Weakening

2000 ◽  
Vol 28 (1) ◽  
pp. 69-77 ◽  
Author(s):  
Zuo Z. Liu, Fang L. Luo, Prof. Muhammad
Keyword(s):  
Dc Motor ◽  
Speed Sensorless ◽  
Field Weakening

A Design of IPMSM for High-Power Electric Vehicles with Wide-Field-Weakening Control Region

2021 ◽  
pp. 1-1
Author(s):  
Cheon-Ho Song ◽  
In-Soo Song ◽  
Hui-Seong Shin ◽  
Chung-Hui Lee ◽  
Ki-Chan Kim
Keyword(s):  
Control Region ◽  
Electric Vehicles ◽  
High Power ◽  
Wide Field ◽  
Field Weakening

scholarly journals Investigating On-Road Lane Maintenance and Speed Regulation in Post-Stroke Driving: A Pilot Case–Control Study

Geriatrics ◽  
2021 ◽  
Vol 6 (1) ◽  
pp. 16
Author(s):  
Heng Zhou ◽  
Qian (Chayn) Sun ◽  
Alison Blane ◽  
Brett Hughes ◽  
Torbjörn Falkmer ◽  
...  
Keyword(s):  
Cognitive Abilities ◽  
Speed Control ◽  
Executive Dysfunction ◽  
Case Control ◽  
Older Drivers ◽  
Control Performance ◽  
Post Stroke ◽  
Speed Regulation ◽  
Stroke Population ◽  
Lane Keeping

Stroke can adversely affect the coordination and judgement of drivers due to executive dysfunction, which is relatively common in the post-stroke population but often undetected. Quantitatively examining vehicle control performance in post-stroke driving becomes essential to inspect whether and where post-stroke older drivers are risky. To date, it is unclear as to which indicators, such as lane keeping or speed control, can differentiate the driving performance of post-stroke older drivers from that of normal (neurotypical) older drivers. By employing a case–control design using advanced vehicle movement tracking and analysis technology, this pilot study aimed to compare the variations in driving trajectory, lane keeping and speed control between the two groups of older drivers using spatial and statistical techniques. The results showed that the mean standard deviation of lane deviation (SDLD) in post-stroke participants was higher than that of normal participants in complex driving tasks (U-turn and left turn) but almost the same in simple driving tasks (straight line sections). No statistically significant differences were found in the speed control performance. The findings indicate that, although older drivers can still drive as they need to after a stroke, the decline in cognitive abilities still imposes a higher cognitive workload and more effort for post-stroke older drivers. Future studies can investigate post-stroke adults’ driving behaviour at more challenging driving scenarios or design driving intervention programs to improve their executive function in driving.

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