iosr-JEEE   Volume-17 ~ Issue-4 ~ Jul. – Aug. 2022

Abstract: Indianagricultureisdiverserangingfromimpoverishedfarmvillagestodevelopedfarmsutilizingmodernagriculturaltechnologies.FacilityagricultureareainChina is expanding and is leading the world. However, itsecosystemcontroltechnologyisstillimmature,withlowlevelofintelligence.Promotingapplicationofmoderninformationtechnologyinagriculturewillsolveaseriesofproblemsfacingby farmers. Lack of exact information and communicationleadstotheloss inproduction.Ourpaper isdesigned toovercometheseproblems.Thissystemprovidesanintelligentmonitoring platform frameworkand system structure forfacility agriculture.....

Keywords: IoT,SmartAgriculture,Humidity,Temperature,SoilMoisture, Arduino

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[3]. KimY,Evans R G,IversenW M.Remote sensingandcontrolofanirrigationsystemusingadistributedwirelesssensornetwork.IEEETransactionsonInstrumentationandMeasurement2008.
[4]. Wang N, Zhang N P, Wang M H. Wireless sensors inagriculture and food industry-Recent development andfuture perspective[J]. ComputersandElectronics inAgriculture,2006.
[5]. Chan, M., Campo, E., Esteve, D., Fourniols, J.Y., "Smarthomes-currentfeaturesandfutureperspectives,"Maturitas,vol.64,issue2,pp.90-97,2009..

Abstract: The world is suffering severely due to climate change and global warming. The maincause of such threats to humanity is the numerous non-renewable forms of energy we useevery day. Solar Energy is oneof the main forms of renewable energy that attempts to abatethe problem of the generation ofpower by harnessing the energy of the Sun. It is also gaining popularity with time as it becomes more efficient with recent technological developments and is therefore making an impression in the sector of renewable energy and power generation. This paper aims to provide.....

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Abstract: For medium voltage, high power regulation the Multilevel Inverters (MLI) are attracting industry and academic researchers. MLI generates the desired output in the form of stepped waveforms with reduced harmonics. The MLI is expected to be realised using a variety of traditional topologies. Traditional MLIs have the disadvantage of requiring additional components, which increases the complexity of gate pulse production. As a result, MLI's overall costs will rise. This research proposes a hybrid topology to alleviate these drawbacks. With the increase in the number of steps in output voltage, the number of dc sources, power switching devices, converter cost, and space required is significantly reduced compared to typical MLIs. The design and simulation of a hybrid converter using several types of PWM approaches are covered in this work. This hybrid converter combines a T-Type single-phase inverter with an H-Bridge module with sub switches. The proposed construction is designed and simulated by MATLAB Simulink software. The proposed 9 level inverter circuit is designed and simulated by Equal phase angle modulation technique and half height modulation technique , THD is compared.

Keywords: multi-level inverter, equal phase angle modulation technique, half height modulation technique, THD

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[2]. J. Swetha, S. Zubeda, Ch. D. Lakshmi Priya and B. M. Reddy "A Three Phase Cascaded H-Bridge Multi Level Inverter fed Induction Motor Drive with Reduced Switches". SSRG International Journal of Electrical and Electronics Engineering– (ICEEMST'17) - Special Issue-March 2017.
[3]. Muhammad H. Rashid "Power Electronics : Circiuts, Devices and Applications" 3rd Edition, Pearson Education.
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