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2024 IEEE Microwaves, Antennas, and Propagation Conference, MAPCON 2024

作者： Kumar, Abhishek Anand, Ravi Shah, Prashant Reddy, G. Shrikanth School of Computing and Electrical Engineering Indian Institute of Technology Mandi Himachal Pradesh Mandi175005 India

ISBN: (纸本)9798350379693

In this research a pyramidal horn feed two dimensional (2-D) transmitarray aperture is proposed for X-band applications. A novel circular patch embedded in circular ring printed on both top and bottom layer of substrate and a shorting via in the center is designed and numerically validated. The proposed transmitarray antenna is designed with five different unit-cell. An overall phase difference of 174° while maintaining a high transmission magnitude of more than 70% at 9.74 GHz is realized. Transmitarray aperture is constructed using 5 × 5 unit-cell with varying size of the central patch for independent control over transmission amplitude and phase. The novel designed aperture realizes the beam-scanning in both the elevation (-19° to -56°) and azimuthal plane (+75° to +157°) by varying the angle of feed antenna (-30° to 30°). The simulated results in the form of transmission amplitude and phase response, shows its significance in designing the compact, high gain, low side-lobe-level (SLL), easy fabrication, and low cost transmitarray antenna. The beam-scanning in the form of 2-D polar plot and 3-D gain pattern proves the efficacy and usefulness of the proposed idea for X-band beam-scanning applications. © 2024 IEEE.

关键词： Scanning antennas

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DES-KNORA Model: Developing an Intelligent System for Automatic Power Mode Adjustment in Electric Bicycles 15

DES-KNORA Model: Developing an Intelligent System for Automa...

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15th International Conference on computing Communication and Networking Technologies, ICCCNT 2024

作者： Mani, S. Dutt, Varun Indian Institute of Technology Mandi School of Computing and Electrical Engineering Himachal Pradesh Kamand175005 India

ISBN: (纸本)9798350370249

Electric bicycles (e-bikes) have gained considerable popularity due to their environmentally friendly nature and suitability as a mode of transportation. However, they face challenges related to manual switches for power mode changes. A potential solution to this issue could be the application of machine learning to improve their performance and safety. Previous research has explored the use of machine learning for gear shifting in bicycles, but there remains a gap in the specific application of ML for automating power mode changes in electric bikes. In order to address this gap, the study proposes the design and evaluation of an intelligent system based on machine learning that can automatically adjust electric bike power modes for users. The research team utilized a Hero Lectro C7+ electric bike and designed and tested a novel ensemble model, the dynamic ensemble selection approach model (DES-KNORA), against several machine learning techniques to predict the need for power mode changes. The DES-KNORA ensemble model fit the measured data the best, with an F1-score of 0.9995 and an accuracy of 99.95%. The study's results show that the suggested method works in real life, making the ride smoother and less annoying for riders. © 2024 IEEE.

关键词： bio signal DES-KNORA dynamic ensemble selection electric bike machine learning terrain data

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A Delay-dependent Dynamic Wide Area Damping Controller for Renewable Energy Integrated Power System Resilient to Communication Failure

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CSEE Journal of Power and Energy Systems 2023年第2期9卷 577-588页

作者： Anirban Sengupta Dushmanta Kumar Das Bidyadhar Subudhi Department of Electrical and Electronics Engineering Sikkim Manipal Institute of TechnologySMUSIkkim737136 India Department of Electrical and Electronics Engineering National Institute of TechnologyNagalandDimapur797103 India School of Electrical Science Indian Institute of TechnologyGoaIndia

Integration of renewable energy sources(RES)with a conventional power system has a detrimental effect on interarea *** popular RESs are solar photovoltaic(PV)and wind energy conversion systems(WECS).Both solar PV power generation and WECS are integrated with power systems using a power electronic *** the amount of RES generation lead towards reduction of system damping,which leads towards inter-area ***,the intermittent behavior of a RES reduces the effectiveness of damping controllers.A dynamic controller based wide area damping controller(WADC)is proposed in this paper to increase small signal stability of a RES integrated power *** WADC is designed for contemplating delay in a communication channel,communication failure and *** anti-windup compensator is developed to overcome the effect of actuator ***,the gain of the anti-windup compensator is calculated using LyapunovKrasovskii functional(LKF)in terms of linear matrix inequality(LMI).The actuator considered in this paper is a unified power flow controller(UPFC).Efficacy of PV and wind power integration on power system is also *** efficacy of the developed dynamic controller is verified using IEEE 39 bus and 68 bus power system.

关键词： Actuator saturation communication failure linear matrix inequality renewable energy sources time delay wide area damping control

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Koopman framework-based observer design for actuator fault identification in Quadrotor 10

Koopman framework-based observer design for actuator fault i...

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10th indian Control Conference, ICC 2024

作者： Akumalla, Ravi Kiran Shukla, Amit Jain, Tushar The School of Mechanical and Materials Engineering Indian Institute of Technology HP Mandi India The Faculty of School of Mechanical and Materials Engineering Indian Institute of Technology HP Mandi India The Faculty of School of Computing and Electrical Engineering Indian Institute of Technology HP Mandi India

ISBN: (纸本)9798331517212

This paper investigates the implementation of the Koopman framework to quadrotor by numerical simulations. Initially, the nonlinear dynamics of a quadrotor is modelled in MATLAB/SIMULINK. The attitude and altitude control of the model is achieved using individual PID controllers. From this closed-loop model, the attitude data and angular torque data are collected. Using this data, a linear approximation of the attitude dynamics of the quadrotor is found by applying the Koopman framework. This identified Koopman linear model is leveraged as a predictor within the model predictive controller (MPC) to achieve inner loop attitude tracking of the quadrotor. Then, a loss of actuator effectiveness (LOE) fault is introduced in one of the actuators, which is successfully identified by designing a linear observer based on the identified Koopman linear model. Finally, the simulation results are provided, describing the attitude control and actuator fault identification in quadrotor using the Koopman framework. © 2024 IEEE.

关键词： Altitude control

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Four Quadrant Operation of Switched Reluctance Motor with Online Turn ON Angle Control 11

Four Quadrant Operation of Switched Reluctance Motor with On...

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11th National Power Electronics Conference, NPEC 2023

作者： Ingle, Piyush Misra, Himanshu Indian Institute of Technology School of Computing and Electrical Engineering HP Mandi India

ISBN: (纸本)9798350311648

This paper describes four quadrant speed control of SRM with online turn ON angle control. A speed PI controller and a current PI controller are used for the purpose. Online turn ON control has also been implemented that adjusts the turn ON angle according to the torque demand and speed, it uses reference current, speed, and DC link voltage to do so. A logic has been developed to determine in which quadrant the motor should be running based on actual speed and reference speed, and it is used to decide whether the winding should be excited on increasing slope or decreasing slope. With the help of this control strategy the motor can track the speed reference in all four quadrants. This method is experimentally verified on 8/6 SRM using an asymmetrical bridge converter to power the SRM and dSPACE controller board. This technique can be used for low performance applications. © 2023 IEEE.

关键词： Controllers

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A Dual-Band, Polarization Insensitive Rectifying Surface for RF Energy Harvesting

A Dual-Band, Polarization Insensitive Rectifying Surface for...

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2023 IEEE Microwaves, Antennas, and Propagation Conference, MAPCON 2023

作者： Shah, Prashant Dutta, Debarati Reddy, G. Shrikanth Indian Institute of Technology Mandi School of Computing and Electrical Engineering Mandi India

ISBN: (纸本)9798350328264

A dual-band polarization-insensitive metasurface array-based RF energy harvester is presented in this paper. The unit cell of the metasurface consists of an X-shaped and four Dshaped slotted resonators. 4 Schottky diodes (BAT15-03WL) are embedded in the rectifying surface. A simultaneous impedance matching between free space and rectifying surface (metasurface + rectifier diodes) is achieved at 3.035 GHz and 6.885 GHz. The unit cells are connected with thin highly inductive microstrip lines to collect DC voltage. The proposed RF energy harvester offers more than 95% absorption efficiency for different angles of polarization and up to 80% absorption efficiency for wide angles of incidence at both the designated bands. The proposed harvester can harvest energy from the 3.035 GHz and 6.885 GHz frequency bands. © 2023 IEEE.

关键词： dual-band Metasuface polarization insensitive. rectifying surface

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Fully Monolithic 1A Thermoelectric Cooler Controller with 90% Efficiency 30

Fully Monolithic 1A Thermoelectric Cooler Controller with 90...

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30th IEEE International Conference on Electronics, Circuits and Systems, ICECS 2023

作者： Sowmyashree, S. Shrimali, Hitesh School of Computing and Electrical Engineering Indian Institute of Technology HP Mandi India

ISBN: (纸本)9798350326499

A fully monolithic thermoelectric cooler (TEC) controller is designed and implemented to provide fixed as well as pre-programmed DC voltage to the TEC in 65 nm CMOS technology with VDD of 1 V. The on-chip controller incorporates linear and pulse width modulation (PWM) drivers, connected to form an H-bridge driver circuitry. The bridge circuit drives the TEC module with an efficiency of 90%. The proposed monolithic controller includes an on-chip PWM filter to eliminate the output voltage ripple within 1% of VDD. The filtering inductor in the feedback loop is designed using the transconductance-capacitance (GmC) based network to obtain the required inductance of 67 mH and quality factor of 6.9 K. The simulation results exhibit a maximum output current of 1 A for a temperature range of -20°C to +100°C with 2 μA and 0.01% of mean deviation over 6σ in a case of output current and efficiency, respectively. © 2023 IEEE.

关键词： Controllers

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Maximizing Profit of the Service Providers through Efficient Content Placement and Retrieval in an IoT-enabled Edge-Cloud Platform 18

Maximizing Profit of the Service Providers through Efficient...

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18th IEEE International Conference on Advanced Networks and Telecommunications Systems, ANTS 2024

作者： Gandhi, Preet Mahanta, Abhishriya Ghose, Manojit Sahu, Aryabartta Indian Institute of Technology Department of Computer Science and Engineering Guwahati India Indian Institute of Technology School of Computing and Electrical Engineering Mandi India Indian Institute of Information Technology Department of Computer Science and Engineering Guwahati India

ISBN: (纸本)9798350391725

In today's 5G era, the amount of data generated by the Internet of Things (IoT) devices is enormous. Data is processed and stored in the cloud under a traditional cloud computing architecture, and real-time processing and retrieval of these data is time-consuming. Therefore, an edge-cloud framework comes in handy where the content generated is placed on the edge nodes of the network, and it can reach the endusers in a time-bound manner. A majority of the previous research works on content placement under the edge-cloud architecture primarily aimed at improving the latency of the system. However, the approach proposed in this paper aims to maximize the profit of the service provider by effectively placing the content in a hierarchically organized edge-cloud network. We propose two strategies and compare them with random and greedy approaches for both synthetic and real data sets. The experimental results demonstrate the effectiveness of the proposed strategies, and the profit of the service providers increases by 38.81% (maximum) and 10.51% (on average) for the synthetic dataset and by 65.74% (maximum) and 22.83% (on average) for the real-world dataset when compared with the greedy approach. © 2024 IEEE.

关键词： Cloud platforms

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Dual degree branched type-2 fuzzy controller optimized with a hybrid algorithm for frequency regulation in a triple-area power system integrated with renewable sources

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Protection and Control of Modern Power Systems 2023年第3期8卷 196-224页

作者： Nisha Kumari Pulakraj Aryan G.Lloyds Raja Yogendra Arya Department of Electrical Engineering Indian Institute of Technology(Indian School of Mines)DhanbadIndia Department of Electrical Engineering National Institute of TechnologyPatnaIndia Department of Electrical Engineering J.C.Bose University of Science and TechnologyYMCAFaridabadHaryanaIndia

The uncertainties associated with multi-area power systems comprising both thermal and distributed renewable generation(DRG)sources such as solar and wind necessitate the use of an efficient load frequency control(LFC)***,a hybrid version of two metaheuristic algorithms(arithmetic optimization and African vulture’s optimization algorithm)is *** is called the‘arithmetic optimized African vulture’s optimization algorithm(AOAVOA)’.This algorithm is used to tune a novel type-2 fuzzy-based proportional–derivative branched with dual degree-of-freedom proportional–integral–derivative controller for the LFC of a three-area hybrid deregulated power ***,electric vehicle(EV),and DRG sources(including a solar panel and a wind turbine system)are con-nected in ***-2 involves thermal and gas-generating units(GUs),while thermal and geothermal units are linked in *** restrictions such as thermo-boiler dynamics,thermal-governor dead-band,and genera-tion rate constraints are also *** proposed LFC method is compared to other controllers and optimizers to demonstrate its superiority in rejecting step and random load *** functioning as energy storage ele-ments,EVs and DRG units can enhance dynamic responses during peak *** a result,the effect of the afore-mentioned units on dynamic reactions is also *** validate its effectiveness,the closed-loop system is subjected to robust stability analysis and is compared to various existing control schemes from the *** is determined that the suggested AOAVOA improves fitness by 40.20%over the arithmetic optimizer(AO),while fre-quency regulation is improved by 4.55%over an AO-tuned type-2 fuzzy-based branched controller.

关键词： Load frequency control Distributed generation Energy storage devices Type-2 fuzzy proportional-derivative branched with dual-degree-of-freedom proportional-integral-derivative controller Hybrid arithmetic optimized African vulture’s optimization algorithm

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Magnetic Skyrmions Based One-Bit Comparator 10

Magnetic Skyrmions Based One-Bit Comparator

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10th IEEE International Symposium on Smart Electronic Systems, iSES 2024

作者： Shringi, Shivangi Bodapati, Srinivasu Srinivasan, Srikant School of Computing and Electrical Engineering Indian Institute of Technology Mandi Mandi India Plaksha University Chandigarh India

ISBN: (纸本)9798331533229

This paper proposes a skyrmion based 1-bit comparator implemented using a 1 × 4 demultiplexer (DMUX) and an OR-gate. A stack is composed of heavy metal (HM) and ultrathin ferromagnetic (FM) i.e., platinum (Pt) and cobalt (Co), respec-tively. The stack can exhibit a large interfacial Dzyaloshinskii-Moriya interaction (DMI), and the FM-HM interface can host stable, Néel-skyrmions at room temperature. The irradiation reduces the local anisotropy and DMI. The nonirradiated regions of the FM act as a potential barrier for skyrmions due to higher anisotropy. The proposed comparator is validated through micromagnetic simulations. © 2024 IEEE.

关键词： Anisotropy

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