scholarly journals Design Considerations and Selection of Cost-Effective Switched Reluctance Drive for Radiator Cooling Fans

Electronics ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 917
Author(s):  
Ickjin Son ◽  
Grace Firsta Lukman ◽  
Mazahir Hussain Shah ◽  
Kwang-Il Jeong ◽  
Jin-Woo Ahn
Keyword(s):  
Low Cost ◽  
Cost Effective ◽  
Magnetic Characteristics ◽  
Switched Reluctance Motors ◽  
Switched Reluctance ◽  
Design Considerations ◽  
Cooling Fan ◽  
Cooling Fans ◽  
Power Switches ◽  
Selection Of

Switched reluctance motors (SRMs) are simple in structure, easy to manufacture, magnet-less, brushless, and highly robust compared to other AC motors which makes them a good option for applications that operate in harsh environment. However, the motor has non-linear magnetic characteristics, and it comes with various pole-phase combinations and circuit topologies that causes many difficulties in deciding on which type to choose. In this paper, the viability of SRM as a low-cost, rugged machine for vehicle radiator cooling fan is considered. First, necessary design considerations are presented, then three commonly use types of SRM are analyzed: A 3-phase 6/4, 3-phase 12/8, and a 4-phase 8/6 to find their static and dynamic characteristics so the most suitable type can be selected. Simulation results show that the 8/6 SRM produces the highest efficiency with less phase current which reduces the converter burden. However, with asymmetric half bridge converter, eight power switches are required for 8/6 SRM and thus put a burden on the overall drive cost. As a solution, the Miller converter with only six switches for four phase SRM. To verify the proposed idea, the 8/6 SRM was manufactured and tested. The results show that Miller converter can be used for the proposed SRM with slightly reduced efficiency at 80.4%.

Minimized Current Sensor and Power Switches for Four-Phase Low-Cost Switched Reluctance Motors

2021 ◽  
Author(s):  
S.M. Mazahir Hussain Shah ◽  
Nasir Ali ◽  
Qiang Gao ◽  
Grace Firsta Luckman ◽  
Jin-Woo Ahn
Keyword(s):  
Low Cost ◽  
Current Sensor ◽  
Switched Reluctance Motors ◽  
Switched Reluctance ◽  
Power Switches

Low‐cost direct instantaneous torque control for switched reluctance motors with bus current detection under soft‐chopping mode

2016 ◽  
Vol 9 (3) ◽  
pp. 482-490 ◽  
Author(s):  
Chun Gan ◽  
Jianhua Wu ◽  
Qingguo Sun ◽  
Shiyou Yang ◽  
Yihua Hu ◽  
...  
Keyword(s):  
Low Cost ◽  
Torque Control ◽  
Switched Reluctance Motors ◽  
Switched Reluctance ◽  
Current Detection

Theory and Manufacturing Processes of Solar Nanoantenna Electromagnetic Collectors

2010 ◽  
Vol 132 (1) ◽  
Author(s):  
D. K. Kotter ◽  
S. D. Novack ◽  
W. D. Slafer ◽  
P. J. Pinhero
Keyword(s):  
Large Scale ◽  
Low Cost ◽  
Cost Effective ◽  
Optical Antenna ◽  
Technological Barriers ◽  
Large Scale Manufacture ◽  
Future Work ◽  
Optical Behavior ◽  
Effective Proof ◽  
Selection Of

The research described in this paper explores a new and efficient approach for producing electricity from the abundant energy of the sun, using nanoantenna (nantenna) electromagnetic collectors (NECs). NEC devices target midinfrared wavelengths, where conventional photovoltaic (PV) solar cells are inefficient and where there is an abundance of solar energy. The initial concept of designing NECs was based on scaling of radio frequency antenna theory to the infrared and visible regions. This approach initially proved unsuccessful because the optical behavior of materials in the terahertz (THz) region was overlooked and, in addition, economical nanofabrication methods were not previously available to produce the optical antenna elements. This paper demonstrates progress in addressing significant technological barriers including: (1) development of frequency-dependent modeling of double-feedpoint square spiral nantenna elements, (2) selection of materials with proper THz properties, and (3) development of novel manufacturing methods that could potentially enable economical large-scale manufacturing. We have shown that nantennas can collect infrared energy and induce THz currents and we have also developed cost-effective proof-of-concept fabrication techniques for the large-scale manufacture of simple square-loop nantenna arrays. Future work is planned to embed rectifiers into the double-feedpoint antenna structures. This work represents an important first step toward the ultimate realization of a low-cost device that will collect as well as convert this radiation into electricity. This could lead to a broadband, high conversion efficiency low-cost solution to complement conventional PV devices.

scholarly journals Velocity Regulation in Switched Reluctance Motors under Magnetic Flux Saturation Conditions

2018 ◽  
Vol 2018 ◽  
pp. 1-13
Author(s):  
Victor M. Hernández-Guzmán ◽  
Jorge Orrante-Sakanassi ◽  
Fortino Mendoza-Mondragón
Keyword(s):  
Magnetic Flux ◽  
Control Law ◽  
Initial Condition ◽  
Switched Reluctance Motors ◽  
Switched Reluctance ◽  
Velocity Error ◽  
External Loop ◽  
Formal Stability ◽  
Ultimate Bound ◽  
Selection Of

We propose a controller for velocity regulation in switched reluctance motors under magnetic flux saturation conditions. Both hysteresis and proportional control are employed in the internal electric current loops. A classical PI velocity controller is employed in the external loop. Our control law is the simplest one proposed in the literature but provided with a formal stability proof. We prove that the state is bounded having an ultimate bound which can be rendered arbitrarily small by a suitable selection of controller gains. Furthermore, this result stands when starting from any initial condition within a radius which can be arbitrarily enlarged using suitable controller gains. We present a simulation study where even convergence to zero of velocity error is observed as well as a good performance when regulating velocity in the presence of unknown step changes in external torque disturbances.

scholarly journals Multiport Driving Topology for a Photovoltaic Aircraft Light Transmission System Driven by Switched Reluctance Motors

Energies ◽  
2020 ◽  
Vol 13 (14) ◽  
pp. 3687
Author(s):  
Xiaoshu Zan ◽  
Wenyuan Zhang ◽  
Kai Ni ◽  
Zhikai Jiang ◽  
Yi Gong
Keyword(s):  
High Performance ◽  
Light Transmission ◽  
Simulation Analysis ◽  
Low Cost ◽  
Power Source ◽  
Battery Pack ◽  
Switched Reluctance Motors ◽  
Switched Reluctance ◽  
Output Torque ◽  
Reduce Energy Consumption

In order to meet the working requirements of high performance and low cost for a photovoltaic (PV) aircraft driven by switched reluctance motors (SRMs), a multiport driving topology (MDT) is proposed. The converter is composed of an asymmetric half-bridge and a multiport power source circuit. Three driving and two charging modes can be realized through simple control of the switches. The output torque and the efficiency of the system are improved, because the excitation and demagnetization processes are accelerated by increasing the commutation voltage. The battery pack can be self-charged when the system is running, and PV panels can be used to charge the battery pack to reduce energy consumption when the system is stationary. The simulation analysis and the experimental verification on an 8/6 SRM confirm the effectiveness of the MFT proposed in this paper.

scholarly journals Simulation of Energy Dump Converter Topology for Switched Reluctance Motors

2018 ◽  
Vol 7 (3.15) ◽  
pp. 99
Author(s):  
A Ayob ◽  
S Abd Halim ◽  
Y Yusof
Keyword(s):  
Low Cost ◽  
Switched Reluctance Machine ◽  
Switched Reluctance Motors ◽  
Design Guideline ◽  
Passive Components ◽  
Switched Reluctance ◽  
Reluctance Machine ◽  
Converter Topology ◽  
Is Integration ◽  
Economical Choice

The switched reluctance machine (SRM) is the least expensive machine to produce yet it is very reliable.  An SRM drive system has to be designed so that there is integration between the machine and the converter-controller configuration. This paper focuses on the resistor dump converter topology where most of the energy from the windings is dissipated in a resistor. A detailed analysis and simulation of the converter has been conducted and a design guideline for the proposed converter is laid out.  The resistor dump converter has a low component count and this enables it to achieve a low cost converter.  Simulation results show that for the resistor dump converter additional snubbers are required.  This leads to an increase in complexity of the controller as more parameters need to be considered.  Also, the addition of the passive components of the snubber makes the circuit less reliable and costly. For the purpose of just looking into detail on the behaviour of the converter, it is sufficient to look at the results of the simulation using a static inductor to model the SP-SRM.  If cost is to be the priority, the most economical choice must be made but within limits of the application. 

scholarly journals Artificial Intelligence Based Vector Controller for Switched Reluctance Motor (SRM)

2019 ◽  
Vol 9 (2) ◽  
pp. 1350-1352
Keyword(s):  
Simple Structure ◽  
Low Cost ◽  
Switched Reluctance Motor ◽  
Industrial Applications ◽  
Switched Reluctance Motors ◽  
Switched Reluctance ◽  
High Effectiveness ◽  
Points Of Interest ◽  
Reluctance Motor ◽  
Torque Ripples

The prevalence of the Switched Reluctance Motors (SRMs) increments step by step because of its points of interest, for example, Simple structure, low cost, less weight, high effectiveness and high beginning torque when contrasted with regular motors. SRM is an electric motor which has invaluable highlights that qualifies it to be utilized in electric vehicle, aviation and industrial applications. In this paper, the switched reluctance motor is controlled using vector control by AI controller (fuzzy) so as to limit the torque ripples by directing torque inside indicated hysteresis band. AI Control of SRM encouraged through an irregular converter. The proposed AI controllers are executed in MATLAB/SIMULINK for specified SRM parameters. As indicated by the attained outcomes the SRM behavior is better when impelled by AI controller in contrast with usual controllers.

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