scholarly journals Sensorless Landing Control Strategy of Bistable Permanent Magnet Actuator

2019 ◽  
Vol 2019 ◽  
pp. 1-11 ◽  
Author(s):  
Bo Li ◽  
Cao Tan ◽  
Geng Wang ◽  
Wenqing Ge ◽  
Binbin Sun
Keyword(s):  
Response Time ◽  
Permanent Magnet ◽  
Control Strategy ◽  
Sound Intensity ◽  
Displacement Sensor ◽  
Displacement Estimation ◽  
Position Detection ◽  
Wide Range ◽  
Permanent Magnet Actuator ◽  
Landing Control

Bistable permanent magnet actuator (BPMA) has been widely used in on/off application. However, the response time and landing performance of on/off actuator are contradictory. Through analyzing the landing control goal of on/off actuator and sensorless technology features of the BPMA, a new sensorless landing control strategy was proposed using armature position detection instead of real-time displacement estimation or displacement sensor. The feasibility and effectiveness of the method are verified by experiment and simulation, the operation quality of BPMA is effectively improved. The results show that the first bounce decreases by 85.7% and the second bounce is avoided when the iteration converged, compared to the condition without landing control, while the response time increased by 6.8%. Meanwhile, the landing velocity decreased more than 50% and sound intensity at different frequencies reduced more than 4dB with sensorless landing control strategy. Although in this paper the control strategy was employed to a BPMA, its structure can be used to analyze and design a wide range of on/off actuator.

Bistable permanent magnet actuator based on double wing magnetic flux

2020 ◽  
pp. 1-12
Author(s):  
Yang Zhao ◽  
Yong Li ◽  
Yunde Shen
Keyword(s):  
Magnetic Flux ◽  
Response Time ◽  
Permanent Magnet ◽  
Control Parameters ◽  
Restoring Force ◽  
Actuation Time ◽  
Step Voltage ◽  
Negative Current ◽  
Simulation Results ◽  
Permanent Magnet Actuator

This letter presents a bistable permanent magnet actuator, based on double wing magnetic fluxes (DWMF) formed by the structure of welding sleeve and slotted armature. The double wing magnetic fluxes consist of high wing magnetic flux (HWMF) and low wing magnetic flux (LWMF), resulting in bistable performance under differentiating control. Parameters improvement around DWMF is analyzed based on modeling, and optimized results for a prototype actuator are obtained. The experimental and simulation results agree well, and show that the prototype actuator can realize bistable performance under the DC step voltage drive, with the holding force of 8.2 N (without current) and the restoring force of −31.7 N (with negative current), the dynamic results show that the displacement response time within 8 mm is 28 ms, of which the actuation time is 16.5 ms, the transient maximum power consumption of the restoring period is 18 W.

Design of Permanent Magnet Synchronous Motor Rotor Position Detection System Based on TLE5012

2014 ◽  
Vol 1028 ◽  
pp. 195-199
Author(s):  
Zhen Wang ◽  
Jian Ping Luo ◽  
Xiang Qiu
Keyword(s):  
Magnetic Field ◽  
Permanent Magnet ◽  
Permanent Magnet Synchronous Motor ◽  
Synchronous Motor ◽  
Superior Performance ◽  
Field Oriented Control ◽  
Position Sensor ◽  
Position Detection ◽  
Wide Range ◽  
The Magnetic Field

Currently, the application of permanent magnet synchronous motor is in a wide range of electric vehicle. Field oriented control algorithm is the main way to control permanent magnet synchronous motor, the magnetic field oriented control must be precise to get the rotational position of the motor. Therefore, the performance of the motor position sensor directly affects the accuracy of the magnetic field oriented control. There are three main kinds of sensors: photoelectric position sensor, magnetic position sensor and magnetic sensor. Due to its superior performance, the application of magnetic position sensors is increasingly widespread. This paper designed permanent magnet synchronous motor position detection circuit for the position of permanent magnet synchronous motor based on TLE5012 used to detect the position and 32-bit micro-controllers Infineon TC1767 used as the main chip.

Direct power control strategy for an axial flux permanent magnet synchronous machine

2019 ◽  
Vol 102 (1) ◽  
pp. 481-491
Author(s):  
Juan Torres ◽  
Rubén Peña ◽  
Javier Riedemann ◽  
Juan Tapia ◽  
Roberto Moncada ◽  
...  
Keyword(s):  
Power Control ◽  
Permanent Magnet ◽  
Control Strategy ◽  
Synchronous Machine ◽  
Permanent Magnet Synchronous Machine ◽  
Direct Power ◽  
Axial Flux ◽  
Direct Power Control

scholarly journals Research on Zero-Voltage Ride Through Control Strategy of Doubly Fed Wind Turbine

Energies ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 2287
Author(s):  
Kaina Qin ◽  
Shanshan Wang ◽  
Zhongjian Kang
Keyword(s):  
Wind Turbine ◽  
Wind Power ◽  
Control Strategy ◽  
Large Scale ◽  
Sliding Mode ◽  
Stable Operation ◽  
Wide Range ◽  
Dc Bus ◽  
Doubly Fed ◽  
Zero Voltage

With the rapid increase in the proportion of the installed wind power capacity in the total grid capacity, the state has put forward higher and higher requirements for wind power integration into the grid, among which the most difficult requirement is the zero-voltage ride through (ZVRT) capability of the wind turbine. When the voltage drops deeply, a series of transient processes, such as serious overvoltage, overcurrent, or speed rise, will occur in the motor, which will seriously endanger the safe operation of the wind turbine itself and its control system, and cause large-scale off-grid accident of wind generator. Therefore, it is of great significance to improve the uninterrupted operation ability of the wind turbine. Doubly fed induction generator (DFIG) can achieve the best wind energy tracking control in a wide range of wind speed and has the advantage of flexible power regulation. It is widely used at present, but it is sensitive to the grid voltage. In the current study, the DFIG is taken as the research object. The transient process of the DFIG during a fault is analyzed in detail. The mechanism of the rotor overcurrent and DC bus overvoltage of the DFIG during fault is studied. Additionally, the simulation model is built in DIgSILENT. The active crowbar hardware protection circuit is put into the rotor side of the wind turbine, and the extended state observer and terminal sliding mode control are added to the grid side converter control. Through the cooperative control technology, the rotor overcurrent and DC bus overvoltage can be suppressed to realize the zero-voltage ride-through of the doubly fed wind turbine, and ensure the safe and stable operation of the wind farm. Finally, the simulation results are presented to verify the theoretical analysis and the proposed control strategy.

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