Development of a Microcontroller-Based 6/12/18/24V Power Inverter Circuit

2017 ◽  
Vol 10 ◽  
pp. 19
Author(s):  
Abiodun Ogunseye ◽  
Daniel Ogheneovo Johnson
Keyword(s):  
Tolerance Limits ◽  
C Language ◽  
Dc Voltage ◽  
Square Wave ◽  
Design Specifications ◽  
Development Tool ◽  
Nominal Voltage ◽  
Single Input ◽  
Inverter Circuit

A power inverter circuits is normally designed to meet its design specifications when the applied input DC voltage is within specified tolerance limits. Thus, single input inverters are usually specified to work from a DC source having a fixed nominal voltage. This limits the usefulness of the inverter circuit when a DC source having the specified nominal voltage is not available. In this work, a modified square wave inverter system that is specified to work properly from batteries with nominal voltages of 6, 12, 18 and 24 V was designed.  A model of the microcontroller-based circuit was developed with Proteus® software and its firmware was written in C language using the MicroC® development tool. A prototype of the circuit was constructed and then tested.  The constructed circuit was found to work properly by producing a 50 Hz modified square waveform when it was powered from batteries having nominal voltages of 6 V, 12 V, 18 V and 24 V.

Physics-of-Failure HALT Result Assessment

2003 ◽  
Author(s):  
Frank Fan Wang ◽  
Clyde Jelinek ◽  
Mary Davis
Keyword(s):  
Product Development ◽  
Mechanical Characteristics ◽  
Accelerated Life Test ◽  
Life Test ◽  
Physics Of Failure ◽  
Design Specifications ◽  
Development Tool ◽  
Accelerated Life ◽  
Weak Points ◽  
Better Than

Highly Accelerated Life Test (HALT) uses stimulation to identify weak points in a design thus to improve the quality. When used with proper assessment, HALT is a very useful product development tool. However, HALT without proper assessment is no better than not testing at all. Scientific assessment of the HALT result is critical to successful use of HALT. The following paper will discuss using a physics of failure approach to assessing HALT results. Discussions cover limitations of HALT, comparisons of HALT to traditional testing, and the roles of design specifications and product mechanical characteristics in HALT. Examples of HALT failures and HALT result assessments are also presented.

scholarly journals Simulasi Pemodelan Sistem Eksitasi Statis pada Generator Sinkron terhadap Perubahan Beban

2019 ◽  
Vol 11 (2) ◽  
pp. 46-54
Author(s):  
Hastuti Azis ◽  
Pawenary Pawenary ◽  
Meyhart Torsna Bangkit Sitorus
Keyword(s):  
Output Voltage ◽  
Alpha Angle ◽  
Induced Voltage ◽  
Synchronous Generators ◽  
Excitation Current ◽  
Excitation System ◽  
Dc Voltage ◽  
Average Value ◽  
Nominal Voltage ◽  
Generator Output

Excitation system is one of the most important parts of synchronous generators, where the system functions to provide dc power to the field generator coil. Iin this study, a static excitation system consisting of transformers and connected thyristors in bridge configuration has been implemented in synchronous machines that operate as 206,1 mva capacity generators, 16,5 kv using the help of matlab simulink r2017b software. By adjusting the load given to the generator, variations in excitation currents can affect the amount of output voltage generated by the generator so that it can increase and decrease the induced voltage. In full load conditions, namely p = 175 mw, q = 100 mvar, the results of the study show that when the simulation is run at alpha 0 °, it is known that the average value of dc voltage is 496,4 v, excitation current is 1057 a and voltage generator output has increased beyond its nominal voltage of 16,72 kv. in this case, to maintain the terminal voltage, the excitation current must be reduced by increasing the angle of shooting of the thyristor to an alpha angle of 45 °, so that the average dc voltage can be reduced to 479,3 v, as well as the excitation current to 985,9 a. the generator output voltage at the alpha 45 ° angle is obtained according to its nominal value of 1,.5 kv.

scholarly journals SISTEM PEMESANAN MAKANAN MENGGUNAKAN MIKROKONTROLER ATMEGA8535

Telematika ◽  
2015 ◽  
Vol 7 (1) ◽  
Author(s):  
Wilis Kaswidjanti ◽  
Dessyanto Boedi Prasetyo ◽  
Alamsyah Alamsyah
Keyword(s):  
Integrated Circuit ◽  
Computer Software ◽  
Active Components ◽  
Large Area ◽  
C Language ◽  
Development Tool ◽  
Dinner Table ◽  
Reservation System ◽  
Avr Microcontroller ◽  
Visual Basic 6.0

Some restaurants are to develop the concept by placing the gazebo-gazebo that were located far apart. With a large area and a place to eat with the amount that more and more the restaurant must provide the waitresses in considerable amounts. Often when the waiter is still busy serving the other guests, then there will be visitors restaurants that can not be served well. In addition, the number of waiters that too many would economically burden the employers because it would result in expenditure will be even greater. Then it can be developed an information system involving hardware and software to apply the reservation system that can be done from the tables or places to eat at a restaurant. Systems built using hardware and software. The hardware is built by using the AVR microcontroller device comprising an IC (Integrated Circuit) which is supported by the power supply, as well as some passive and active components. Software on a microcontroller using C language development tool using CodeVision of AVR. While the computer software using Visual Basic 6.0 programming language. Food ordering system that created it can improve services for consumers in terms of booking. Buyers can make a reservation at the dinner table without going through the waitress who had approached the table and write whatever menu you want to order. Additional bookings can also be done through the table without leaving the place or the waiter.

A Single-Stage Square Wave Buck-Boost Inverter

2015 ◽  
Vol 793 ◽  
pp. 280-285
Author(s):  
J.A. Soo ◽  
N.A. Rahman ◽  
J.H. Leong
Keyword(s):  
Duty Cycle ◽  
Output Voltage ◽  
Boost Converter ◽  
Single Stage ◽  
Experimental Results ◽  
Voltage Source ◽  
Voltage Waveform ◽  
Boost Converters ◽  
Dc Voltage ◽  
Square Wave

This paper proposed a novel single-stage square wave buck-boost inverter (SWBBI). The proposed inverter is designed by using dual buck-boost converters. The input DC voltage of the proposed inverter can be either stepped-down or stepped-up in square output voltage waveform depending on the duty-cycle applied for each buck-boost converter. This characteristic is not found in conventional voltage source inverter where the output voltage is always lower than the input DC voltage. The proposed inverter is analyzed by a series of simulations using MATLAB/Simulink as well as experiments by using different values of duty-cycle. A conclusion about the feasibility of the proposed inverter is given by comparing the simulation and experimental results.

Double-Input Multi-Output Pressure Control System Based on Addressable Pressure Component

2021 ◽  
Author(s):  
Qiandiao Wei ◽  
He Xu ◽  
Siqing Chen ◽  
Weiwang Fan
Keyword(s):  
Control System ◽  
Control Method ◽  
Pressure Control ◽  
Supply Source ◽  
Single Input Single Output ◽  
Square Wave ◽  
Output Pressure ◽  
Single Output ◽  
Pressure Control System ◽  
Single Input

Abstract Soft robots driven by pressurized fluid have recently been attracted more attention and achieved a variety of innovative applications in bionics, medical surgery, rehabilitation, search, and rescue system. And they have been demonstrated to be able to perform many different tasks, especially in some conditions of demand a high degree of compliance. Generally, they consisted of multiple actuate channels that require independent works. Consequently, a mass of pressure regulators and input pipelines are demanded, which will increase the complexity of the control system. To solve this problem, we propose a new pressure control method inspired by the control bus of electronic interface technology in this paper. An addressable pressure control bus system based on band-pass valve (BPV) and square wave of pressure (control signal) was designed. It consisted of a pressure supply source and an addressing signal, they are controled by two regulators, respectively. One of the pressure pipelines serves as the control bus to transmit the control pressure signal, which plays an addressing signal role in the system. The other serves as the pressure supply source of the multi-channel actuators. The BPV can be set to different opening pressure bands to realize the setting of diverse outputs address codes on the bus. This method discovered the work mode of double-input multi-output, which will get rids of the traditional control method of single-input single-output. In this paper, we designed the BPV and tested its function. To demonstrate the feasibility of this method proposed, a control system with two output ports was established. The result has shown that the output port can be selected by the pressure square wave signal, which realizes the function of single input multiple outputs. It reduces the complexity of the control strategy of the fluid control system.

Integrated Instrument Based on SOPC

2012 ◽  
Vol 214 ◽  
pp. 141-147
Author(s):  
Zheng Ma ◽  
Ming Liu Liu ◽  
A Hui Yang ◽  
You Yang Liu
Keyword(s):  
Sine Wave ◽  
Signal Generator ◽  
Soft Core ◽  
Control Center ◽  
Dc Voltage ◽  
Square Wave ◽  
Digital Oscilloscope ◽  
Dc Current

This instrument based on SOPC technology is embedded with a NIOS soft-core in Cyclone III as a control center that integrates digital oscilloscope, DDS signal generator and a simple digital multi-meter. It can measure AC signal of 200 Hz-5MHz and 10mVpp-10Vpp, display and store the wave, and can also manually and automatically adjust the amplitude and frequency. This instrument can generate sine wave of 10Hz to 1.5MHz, square wave of 10Hz to 200 KHz, triangle wave, and saw-tooth wave vary from 150mVpp to 10Vpp. Also, it can measure AC and DC voltage of 20mV to 200V, the AC and DC current of 2mA to 1A, resistance of 20Ω to 2MΩ, maintaining 5% accuracy. It is simple, easy to use, can fulfill the general experiment requirements with good performance and strong practicability.

scholarly journals Rancang Bangun Kontrol Pemadaman Listrik Rumah Via SMS Dengan Lampu Emergency Inverter

2018 ◽  
Vol 2 (1) ◽  
pp. 31-36
Author(s):  
Yanuar Gustiyandi ◽  
Indah Sulistiyowati
Keyword(s):  
Everyday Life ◽  
Power Outage ◽  
Dc Voltage ◽  
Turn On ◽  
Inverter Circuit

Electricity is the main source of energy that humans need for everyday life, without electricity a human can not turn on the television, the fridge, and which is sure to be dark because it can not turn on the lights at night. Therefore electricity is very important and can be a major requirement in this life, recently there are frequent blackouts in turn by PLN. The problem is that during the night there is a blackout the house will be dark because the lights will also die, and that's when it takes a tool to turn on the house lights to be able to illuminate the house when there is a power outage. The tool is an inverter run by batteries with 12 volt DC voltage that replaces 220 volt voltage from PLN and also can control via SMS if at any time of power outage. The inverter circuit will be active when there is a power outage and the arduino as a microcontroller triggers the SIM 900 sms module to send a message to the homeowner to confirm the inverter is activated or not, if the inverter is active then the lamp will turn on and if the inverter is off then the lamp will stay off. So that will be generated appliance control of house electricity blackout by sms with emergency lamp run by DC to AC inverter.

scholarly journals Harmonic cancellation in a Multi-level Inverter Configuration Suitable for PV Applications

2018 ◽  
Vol 7 (4.6) ◽  
pp. 177
Author(s):  
Kiran Kumar Nallamekala ◽  
K. Venkat Raman ◽  
Md. Asif
Keyword(s):  
Lower Order ◽  
Switching Frequency ◽  
Matlab Simulink ◽  
Dc Voltage ◽  
Capacitor Banks ◽  
Multi Level ◽  
Inverter Circuit ◽  
Harmonic Cancellation ◽  
Switching Devices

Multi-level inverters are playing a major role in PV based systems because of numerous advantages like low dv/dt, better harmonic profile so on. But, conventional multi-level inverters consist of some drawbacks like capacitor balancing issues, greater requirement of capacitor banks and clamping diodes. To address these issues, a novel multi-level inverter has been presented in this paper, which can function as a seven-level, five-level and three-level inverter. The inverter circuit utilizes six switching devices and two isolated DC voltage sources.  Moreover, when it is operated as a three-level inverter, a unipolar PWM technique is applied to the circuit which shifts all the lower order harmonics to twice of switching frequency whereas in conventional multi-level inverters, all the harmonics of lower order are present around switching frequency. In addition, proposed inverter can operate even if some switching devices of the circuit fails. Also, the behavior of the inverter during the failure of some switching devices and DC source is analyzed. The proposed inverter is simulated in MATLAB/Simulink and the results are also discussed.  

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