scholarly journals Automatic Power Supply Control to Ensure No Break Power

2019 ◽  
pp. 249-255 ◽  
Author(s):  
DVN Ananth ◽  
G. Jogarao ◽  
K. Sirisha ◽  
B. Kumar ◽  
K. Anusha Sai Kumar. G
Keyword(s):  
Power Supply ◽  
Power Source ◽  
Current Status ◽  
Uninterrupted Power Supply ◽  
Input Signals ◽  
Different Sources

The main objective of this project is to provide uninterrupted power supply to a load, by selecting the supply from any source out of 4 different sources such as mains, generator, and inverter and solar automatically in the absence of any of the source. As we know that the demand for electricity is increasing every day and frequent power cuts is causing many problems in various areas like industries, hospitals, offices and houses which are necessary to be prevented. An alternative arrangement for power source must be used. This project uses four switches to demonstrate the respective failure of that source of supply. A microcontroller of ATmega328 family is used. The output of the microcontroller is given to the relay driver IC, which switches appropriate relay to maintain an uninterrupted supply to the load. When any of the switches is pressed it shows the absence of that particular source. Switches are connected to microcontroller as input signals. The output is observed using a lamp drawing power supply from mains initially. On failure of the mains supply (which is actuated by pressing the appropriate switch) the load gets supply from the next available source, say an inverter. If the inverter also fails it switches over to the next available source and so on. The current status, as to which source supplies to the load is also displayed on an LCD. As it is not feasible to provide all 4 different sources of supply, one source with alternate switches are provided to get the same function.

scholarly journals Design and Implementation of Solar Panel MPPT with Inverter and Battery Towards Load Side

2021 ◽  
pp. 943-951
Author(s):  
Prof. Najma Siddiqui ◽  
Mohammad Anwar ◽  
Junaid Akhtar ◽  
Ehtesham Asif ◽  
Mohammad Rehan ◽  
...  
Keyword(s):  
Power Supply ◽  
Electrical Power ◽  
Power Source ◽  
Low Energy ◽  
Energy Resources ◽  
Automation System ◽  
Renewable Energy Resources ◽  
Design And Implementation ◽  
Separate Source ◽  
Different Sources

In India the requirement and availability of energy for power supply is 11,14408 million units and 10,90850 million units for 2015-16 and we also know that the human activities is mostly dependent on electrical power supply. The above fact clearly shows that the supply is not meeting the demand. As a result frequent power-cut is done and interrupted power supply is provided. The alternative for this problem is to switch towards renewable energy resources. Four different sources i.e. mains, generator, solar and inverter are used to provide uninterrupted power supply. Using the solar energy as one of the power source provides the solution for low energy resources since it is a non-renewable source of energy. The second objective of work is to provide automation which make the work faster, reliable, efficient, and reduce human efforts. Microcontroller (PIC/AT89C51) is used to provide automation in the switching between four different sources. The automation system used for switching requires separate source to provide an output signal which will operate the four different relays connected to sources respectively

Effect of Maximum Voltage Angle on Inverter Performance Applied in Uninterrupted Power Supply (UPS)

2015 ◽  
Vol 793 ◽  
pp. 304-308
Author(s):  
Mahrizal Masri ◽  
R. Badlisha ◽  
Muhamad Irwanto ◽  
N. Gomesh ◽  
Y.M. Irwan ◽  
...  
Keyword(s):  
Power Supply ◽  
Single Phase ◽  
Negative Impact ◽  
Harmonic Distortion ◽  
Power Source ◽  
Phase Inverter ◽  
Uninterrupted Power Supply ◽  
Aquarium Water ◽  
Single Phase Inverter ◽  
Maximum Voltage

Uninterrupted power supply (UPS) sits between a power supply such as wall outlet and devices to prevent undesired feature that can occur within the power source such as outages, sags, surges and bad harmonics from the supply to avoid a negative impact on the devices. This paper presents a photovoltaic (PV) powered UPS using microcontroller PIC16F628A-I/P. It is a standby UPS whereas if the main power source fails to supply power to loads, a battery powered inverter turns on to continue supplying power. The battery is charged by the PV using solar charger and transfer switch controlled by the microcontroller. In this research, AC three-level waveform single phase inverter was developed and created by a microcontroller PIC16F627A-I/P with varied maximum voltage angle from 200 to 1800 and tested to a load of 240 V, 20 W AC aquarium water pump, and also analyzed effect of maximum voltage angle on the three-level single phase inverter performance. The result showed that maximum voltage angles of the inverter effected on root mean square value of AC voltage, current and power. If the maximum voltage angle was increased, therefore value of the AC voltage, current and power would increase. The maximum voltage angle would effect on the current total harmonic distortion (CTHD), the lowest CTHD of 15.448% was obtained when the maximum voltage angle was 1340.

scholarly journals A Low Power AC/DC Interface for Wind-Powered Sensor Nodes

Energies ◽  
2021 ◽  
Vol 14 (7) ◽  
pp. 1823
Author(s):  
Mohammad Haidar ◽  
Hussein Chible ◽  
Corrado Boragno ◽  
Daniele D. Caviglia
Keyword(s):  
Low Power ◽  
Power Supply ◽  
Energy Harvester ◽  
Optimization Techniques ◽  
Sensor Nodes ◽  
Wireless Sensor ◽  
Constant Voltage ◽  
Interface Circuit ◽  
Switching Converter ◽  
Input Signals

Sensor nodes have been assigned a lot of tasks in a connected environment that is growing rapidly. The power supply remains a challenge that is not answered convincingly. Energy harvesting is an emerging solution that is being studied to integrate in low power applications such as internet of things (IoT) and wireless sensor networks (WSN). In this work an interface circuit for a novel fluttering wind energy harvester is presented. The system consists of a switching converter controlled by a low power microcontroller. Optimization techniques on the hardware and software level have been implemented, and a prototype is developed for testing. Experiments have been done with generated input signals resulting in up to 67% efficiency for a constant voltage input. Other experiments were conducted in a wind tunnel that showed a transient output that is compatible with the target applications.

scholarly journals From Renewable to Marine Energies Sources for Sustainable Development and Energy Transition in Morocco: Current Status and Scenario

2018 ◽  
Author(s):  
Mostapha Tarfaoui ◽  
Mourad Nachtane ◽  
Youssef Amry ◽  
Ahmed El Moumen
Keyword(s):  
Energy Efficiency ◽  
Power Supply ◽  
Energy Transition ◽  
Tidal Energy ◽  
Mediterranean Coast ◽  
Offshore Wind ◽  
Current Status ◽  
Fossil Energy ◽  
Ocean Thermal Energy ◽  
Current Energy

The current energy policy recommends the idea of energy efficiency over fossil energy as a primary matter for the coming years. The kingdom of Morocco requires restructuring of its power equipment by increasing the percentage of renewable energy supplies, optimizing their systems and power storage. Therefore, increasing energy efficiency is an as important obligation as reducing the overall energy consumption. The purpose of this research is to present the energy transition in Morocco towards renewable energies and to assess the diversity of available marine natural resources. Recent research in conversion of ocean thermal energy, wave energy, tidal energy, offshore wind energy, and osmotic energy into power supply has started to encourage different technologies. This research has led to commercial deployment in some cases such as our 550 km long Mediterranean coast and 3000 km long Atlantic. This does not only result in fossil energies independency but also provides advantages like less cost and no pollution.

The Application of Grey Prediction on the Fast Control Power Supply in EAST

2013 ◽  
Vol 427-429 ◽  
pp. 1739-1742
Author(s):  
Hai Hong Huang ◽  
Jia Miao ◽  
Hai Xin Wang ◽  
Feng Feng Wang
Keyword(s):  
Input Signal ◽  
Power Supply ◽  
Grey Theory ◽  
Grey Prediction ◽  
Grey System ◽  
Control Power ◽  
Input Signals ◽  
Simulation And Experiment ◽  
One Step ◽  
Fast Control

Based on the grey theory, a novel model is built to predict the input signal of fast control power supply used in Experimental Advanced Superconducting Tokamak (EAST). The model can be used as online metabolic grey filtering and one-step prediction of different input signals. Results of simulation and experiment show that the predicting algorithm based on the grey system model can predict the input signal primarily.

Development of a Gas Turbine Generator On-Board Electric Power Source for MAGLEV Trains

1992 ◽  
Author(s):  
Teruo Washizu ◽  
Teru Morishita ◽  
Shoji Matsuda ◽  
Nobuo Terauchi
Keyword(s):  
Electric Power ◽  
Gas Turbine ◽  
Power Supply ◽  
Mechanical Characteristics ◽  
Power Source ◽  
Test Model ◽  
Passenger Cars ◽  
Maglev Train ◽  
Turbine Generator ◽  
Superconducting Coils

We have been jointly developing an on-board electric power source for MAGLEV trains by applying a 30kW generator for gas turbine hybrid passenger cars. Operating the generator on a test model apparatus simulating the generator installed in a MAGLEV train, we investigated its electrical and mechanical characteristics with the location close to superconducting coils. The effects of magnetic field on the generator’s characteristics are investigated and described in this paper. MAGLEV trains require about a 50kW on-board power supply per car. At present, we are designing a 50kW gas turbine generator on the basis of the 30kW gas turbine generator.

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