Browsing by Author "Tiwari, Vivek"

Now showing 1 - 9 of 9
  • No Thumbnail Available
    Item
    Analysis and Implementation of H-Bridge Multilevel Inverter
    (AIKTC, 2015-05) Tiwari, Vivek; Shaikh, Mohammed Sadique; Shaikh, Imran Jainuddin; Shaikh, Ghulam; Shaikh, Arshad; Ziyaul, Mujeebul
    ABSTRACT The power electronics device which converts DC power to AC power at required output voltage and frequency level is known as inverter. The voltage source inverters produce an output voltage or a current with levels either 0 or positive or negativeVdc. They are known as two-level inverters. Multilevel inverter is to synthesize a near sinusoidal voltage from several levels of dc voltages. Multilevel inverter has advantage like minimum harmonic distortion. Multi-level inverters are emerging as the new breed of power converter options for high power applications. They typically synthesize the stair –case voltage waveform (from several dc sources) which has reduced harmonic content. In this project work, voltage THD analysis of H-bridge multilevel inverter and hardware model of Three-level single phase cascade H-Bridge inverter has been developed using MOSFETS/IGBTS. Gating signals for these MOSFETS/IGBTS have been generated by designing comparators. In order to maintain the different voltage levels at appropriate intervals, the conduction time intervals of MOSFETS/IGBTS have been maintained by controlling the pulse width of gating pulses ( by varying the reference signals magnitude of the comparator ). The results of hardware are compared with simulation results. Simulation models (designed in SIMULINK) have been developed up to five levels and THD in all the cases have been identified.
  • No Thumbnail Available
    Item
    Analysis of induction motor by using cascaded multilevel inverter
    (AIKTC, 2016-05) Tiwari, Vivek; Mourya, Satishkumar (12EE35); Chaudhary, Faiyaz (13EE72); Khan, Haidar (13EE73); Dahatonde, Akshay (12EE11)
    Multilevel inverters had gain popularity over the years in industrial applications such as motor drives, static VAR compensators and renewable energy system. Multilevel inverters have received this attention as it promises less disturbance and possibility to function at lower switching frequency than traditional two level inverters. Out of many level inverters topologies proposed, cascaded multilevel inverters features a high modularity degree because each inverter can be seen as a module with similar circuit topology, control structure and modulation. With large numbers of advantages CMI has one major limitations of voltage unbalance across the dc capacitor. This thesis explores basis structure and operating principles of CMI. Common modulation techniques are summarized. This thesis also presents the total harmonics distortion (THD) analysis of seven level CMI with phase shifted (PS) sinusoidal pulse width modulation (SPWM) and level shifted (LS) SPWM techniques such as phase disposition (PD), phase opposition disposition (POD), and alternate phase opposition disposition (APOD). The harmonic spectrum for PS and LS SPWM techniques are compared. Module capacitor voltage balancing algorithm such as sorting strategy is proposed for CMI.
  • No Thumbnail Available
    Item
    Digital Control of BLDC motor by using MOSFET and microcontroller
    (AIKTC, 2019-05) Tiwari, Vivek; Shaikh, Shahbaz Aftab (16DEE80); Ansari, Mohd Shazeb Salam(16DEE55); Sayyed, Tosif Yusuf (16DEE72); Shaikh, Mairaj Altaf (16DEE77)
    Now a day BLDC motor is becoming very famous in the department of aerospace, automation, computers, military, household appliances and traction applications because of its high competency and low maintenance cost. Because of this the four quadrant operation of BLDC motor is extremely important. BLDC motor control requires rotor position and speed measurements. In this project the modeling of BLDC motor drive system along with its control system have been presented using H-bridge type arrangement MOSFET work like a drive and for controlling purpose we use microcontroller AT 89S52.
  • No Thumbnail Available
    Item
    GSM based power theft detector
    (AIKTC, 2016-07) Tiwari, Vivek; Khan, Nazim (12EE80); Chaudhary, Irshad Ahmed (12EE107); Shaikh, Asif (12EE86)
    Home automation is designed to prevent an actual confrontation between a returning occupant and an intruder. In the market, we found out many systems that can be use to protect the property. However if a member of the family was away, we wanted a system that would inform the member if the house has being broken into. This was ultimate safety that one looks for in a home security system. We can also add features such as lpg gas leakage, fire breakdowns or even water tank overflow. Chapter 2 deals with the history of home automation along a brief description of Hardware & Software. Chapter 3 deals with the basics of GSM System. It gives the details of the adopted methodology which includes Block diagram, Circuit diagram, Hardware & Software used. Chapter 4 deals with Analysis, Experimentation & Results. It includes descriptions of various ICs used, PCB layout & Challenges faced during our project. Chapter 5 deals with the future scope and conclusion. In order to make the system ‘smart’, we have made the mobile phone almost a universal remote controller, where in the user can control various devices at his home just through the SMS. We have even solved the i/o port limitations by expanding the ports using latches and buffers so that more sensors can be interfaced in future.
  • No Thumbnail Available
    Item
    Home automation using Raspberry PI 3
    (AIKTC, 2018-05) Tiwari, Vivek; Kudake, Sahil (13EE42); Ubale, Akshay (14EE44); Mathew, Joel (14EE15); Khan, Nabeel (14EE23)
    Themainaim oftheprojectistocontrolhomeapplicationsremotelyby usingAndroid-OS-basedsmartphone.Thisisanadvancedtechnologyinthe homeautomation.Usuallyconventionalwallswitchesarelocatedindifferent cornersofahouseand,thusnecessitatetheneedofmanualoperationslike pressingtoturntheloadsonoroff.Itbecomesverydifficultfortheelderlyor physicallyhandicappedpeopletooperatethem.Thus,theproposedsystem is enhancedtocontrolhomeapplicationsthroughanAndroid-basedapplicationof smartphonesortabletsthatofferstheprovision forentering theselected numbersforoperatingthecorrespondingload.Thisproposedsystem workswith acircuitcalledRaspberrypi3andarectifiedpowersupply.AWiFiconnectionis usedforcommunication.OnceanownerconnectsanAndroidapplicationdevice tothissystem throughaWiFi,thentheownercansendthecontrolsignals throughtheWiFi.TheownercanalsoentertheselectedoptionontheAndroid applicationthroughtheGUIforcorrespondingloads,andthedataissenttothe raspberrypi.Thereceiveddataiscomparedwiththestoreddataintheraspberry piand,ifitmatches,thentheraspberrypiperformsthecorrespondingoperation forcontrollingloads
  • No Thumbnail Available
    Item
    Mathematical Modelling of photovoltaic cell
    (AIKTC, 2019-05) Tiwari, Vivek; Kaldane, Zaid Yasin (15EE13); Khan, Aquib Khalid (15EE15); Shaikh, Mohammed Zeeshan (12EE49); Sayed, Saquib Salahuddin (12EE41)
  • No Thumbnail Available
    Item
    Power generation through gym equipment
    (AIKTC, 2019-05) Tiwari, Vivek; Ansari, Saddam Hussain (15EE04); Gujja, Govardhan Parshuram (15EE10); Gund, Kumar Vilas (15EE11); Mohd., Ahmad (15EE28)
    Man has needed and used energy at an increasing rate for his sustenance and well­being ever since he came on earth for few million year ago. Due to this lot of energy resources have been exhausted and wasted. Proposal for the utilization of waste energy of power generation by gym pulley is very much relevant and important for highly populated countries like India and china the people are crazy about gym. In this project we are generating electrical power as non-conventional method by simply pull up and pull down. Non-conventional energy system is very essential at this time to our nation. Non-conventional energy using ABS WORKOUT MACHINE conve1ting mechanical energy into electrical energy. ln this project the conversion of force energy into electrical energy. The use ofhmnan-power in more efficient manner for generation has been possible due to modem technology. ABS WORKOUT MACHINE is an excellent source of energy, 95 percentage of the exertion put into ABS WORKOUT MACHINE power converted into energy. A human-powered electricity generation has been unveiled by company. ln this apparatus, the user has to do the ABS workout from the gym equipment for generating power.
  • No Thumbnail Available
    Item
    Protection system of three phase induction motor using relays
    (AIKTC, 2016-05) Tiwari, Vivek; Shaikh, Md. Amir (12EE47); Shaikh, Mohd. Zeeshan (12EE50); Shaikh, Mohsin (12EE52); Siddiqui, Mohd. Saad (12EE59)
    Three-phase induction motors are accountable for 85 percent of the installed capacity of the industrial driving systems. Therefore, the protection of these motors is necessary for reliable operation of loads. This report tends to develop for protection of three phase induction motor from single phasing, over current, phase reversal, over voltage and under voltage. Due to this electrical fault the winding of motor get heated which lead to insulation failure and thus reduce the life time of motor. This fault is generated in induction motor due to variation in induction motor parameters. When three phase induction motor runs continuously, it is necessary to protect the motor from these anticipated faults. Three phase induction motor generally directly connected through the supply, if the supply voltage has sag and swell due to fault the performance of motor is affected and in some cases winding is burned out. When phase sequence (RYB) is reversed due to wrong connection then motor start rotating in another direction, if supply system has only one phase and other phase is disconnected then it is single phasing problem. If there is problem of under or over voltage then this can harm motor severely or even it can damage it permanentaly.
  • No Thumbnail Available
    Item
    Solar tracker inverter
    (AIKTC, 2017-05) Tiwari, Vivek; Khan, Habibur (12EE20); Ansari, Mohd. Intekhab (13EE10); Khatib, Mohd. Salman (11EE28); Rakhange, Mohtashim (11EE36)
    Solar panel has been used increasingly in recent years to convert solar energy to electrical energy. The solar panel can be used either as a stand-alone system or as a large solar system that is connected to the electricity grids. In order to maximize the conversion from solar to electrical energy, the solar panels have to be positioned perpendicular to the sun. Thus the tracking of the sun’s location and positioning of the solar panel are important. The goal of this project is to design an automatic tracking system, which can locate position of the sun. The tracking system will move the solar panel so that it is positioned perpendicular to the sun for maximum energy conversion at all time. Photoresistors will be used as sensors in this system. The system will consist of light sensing system, microcontroller, gear motor system, and a solar panel. Our system will output up to 40% more energy than solar panels without tracking systems. This project collects, stores, and converts solar energy into 120V ac electrical power to drive a small appliance. The design consists of a solar panel, step-down DC converter, battery, solar source tracker, and DC/AC inverter. The efficiency goal is 66%.