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Audio visuals to enhance practical knowledge |
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OPAMP ,Operational amplifiers on single rail ADC the analog to digital converter PWM pulse width modulation in 555 Timer |
List of Latest Electrical & Electronic projects with Complete on-line Support & Kit supply from India
On line support :-Any project listed below through SKYPE at a nominal cost of Rs.1000/per hour ($50 for foreign students) for explaining Abstract,Block diagram,Circuit diagram,Simulation , Components used, Operating principles,Design concepts,Program (if any),Advantages & disadvantages, Application areas,Future improvement possibilities etc.
Kit supply :-For projects from sl no 1 to 15 as per the kit price that include ,All the components,source code (if any),relevant audio visuals from above,Seminar PPT,Documentation & certificate from An ISO 9001-2000 organization .
01 Title--Single phase to 3 phase by SPACE VECTOR PWM (SVPWM)
Click for Audio http://www.youtube.com/watch?v=j9bP_KWyMCs
Summary
Space Vector PWM (SVPWM) refers to a special switching sequence of the upper three power transistors of a three-phase power inverter. It has been shown to generate less harmonic distortion in the output voltages and or currents applied to the phases of an AC motor and to provide more efficient use of supply voltage compared with sinusoidal modulation technique . In this we shall do the simulation, to study Space Vector Pulse Width Modulation (SVPWM) technique. We will use the IGBT Flexible Power Converter hardware for this purpose. Abstract
02 Title--PID/FUZZY LOGIC based BLDC motor speed control
Click for Audio http://www.youtube.com/watch?v=1bfPI-0QKyY
Summary
Based on closed loop feedback giving RPM reference of the BLDC motor by a Hall sensor is fed to the control the circuit. A display unit displays the full speed and one can enter the desired percentage to reduce the speed. The PWM would be automatically adjusted to maintain the load power to the motor such that the entered speed by the keypad percentage matches the RPM. The above operation is carried out by using microcontroller with keypad input and out put to a motor through a motor driver circuit. Abstract
03—Title--SOLD STATE CIRCUIT BREAKER USING MOSFET
Summary
This project is to shut down the power supply instantenously when it is overloaded. Conventional circuit breaker is based on thermal bimetal lever trip mechanism, which is very slow and the trip time is dependent upon the percentage of overload. Electronic circuit breaker is based on the voltage drop across a series element typically a low value resistor or a CT (current Transformer). The voltage sensed is compared against the preset voltage proportional to the current by a level comparator to generate an output for the contactor to trip the load. The unit is extremely fast and overcomes the drawback of the thermal type.Abstract
04—Title--SCADA ( Supervisory Control and Data Acqision)
Summary
The project uses the simple concept of OHMs law where a low DC voltage is applied at the feeder end through a series resistor. The current would vary depending upon the length of fault of the cable in case there is a short circuit of LL or 3L or LG etc. The series resistor voltage drop changes accordingly which is then fed to an ADC to develop precise digital data which the programmed microcontroller would display the same in Kilo meters. The project is assembled with a set of resistors representing cable length in KMs and fault creation is made by a set of switches at every known KM to cross check the accuracy of the same.Abstract
06---Title--SOLID STATE STARTER FOR 3 PHASE INDUCTION MOTOR
Summary
Three pair of back to back SCRs in each phase are phase controlled in a similar manner to a light dimmer, in that they are turned on for a part of each cycle. The average voltage is controlled by varying the conduction angle of the switches at the start and thereafter increasing the conduction angle will increase the average output voltage slowly over a period of time till the motor achieves a speed making it truly a soft start. Controlling the average output voltage by means of solid state switches has a number of advantages over conventional star delta starter. After the motor reaches desired speed the semi conductor switches are bypassed to feed full voltage to the motor. This eliminates the open transition condition that is inherent in any electro-mechanical device such as contactors generally used for automatic star delta starter.Abstract
07—Title--AUTOMATIC POWER FACTOR CONTROL
Summary
Apparent power is simply the product of the rms voltage and rms current measured over the entire period while power factor is defined as the ratio of real power to apparent power, where real power is the time integral of the instantaneous power measured over a full period. In this project the time lag between the zero voltage pulse and zero current pulse duly generated by suitable operational amplifier circuits are fed to two interrupt pins of the microcontroller where the programme takes over to actuate appropriate number of relays at its output for bringing shunt capacitors into the load circuit to get the power factor till it reaches 0.95.Abstract
08--Title--Stand-Alone Home Electricity Supply System (SHESS) using Solar Energy
Summary
Solar energy is a very important source to replace the conventional sources such as coal and gas because it is free of pollution. In the future, electricity produced by renewable sources will replace that from conventional energy sources. The objectives of the project is to develop a standard design procedure for determining capacity of solar panels and batteries and developing the corresponding DC/AC inverter, DC/DC inverter, and supply circuit layouts (switch, protection, etc.)Abstract
09--Title--WIRELESS POWER TRANSFER
Summary
Introduction:- Many people use pace makers (An electronic device that works in place of a defective heart valve) implanted in their body that runs on a battery. The patient is required to be operated every year to replace the battery .This project takes care to charge a rechargeable battery wirelessly for the purpose. This project is formed out of an ac 230 volt 50 Hz to ac 20 KHz at 12 volt circuit .The output is fed to a tuned 20 KHz coil forming as primary of an air core transformer .The secondary coil develops a voltage of 20 KHz at 12 volt while it is kept over the primary coil where air is used as the core. The output of the secondary is given to a high frequency bridge rectifier that delivers dc which is then regulated to maintain a constant charging current to a NiCd (Nickel Cadmium) rechargeable battery. Normally these batteries have a long life of 7 years. Thus the patient’s operation time can be deferred to each 7 year interval.Abstract
10--Title--MAINS CYCLE STEALING TO CONTROL AC POWER WITHOUT HARMONICS
11--SENDING AN SMS FOR ELECTRICAL LOAD CONTROL WITH ACKNOWLEDGEMENT STATUS
Summary
The main objective of this project is to develop a project to control the appliance through sms. This project is powered by a on board power supply containing transform for ac source, bridge rectifier to convert to dc source and the voltage regulator to get 5v dc source. Using any mobile a message is sent to another sim loaded GSM modem on board that receives the sms and feeds it to a level shifter IC max232 that feeds the data to microcontroller to output logical data to relay driver IC that finally controls the home appliances or any load through its “NO” contacts and then sending a confirmation from the GSM modem upon the status of the load based on the data received from the microcontroller. All conditions are seen on a 16x2 display.Abstract
12--- AUTOMATIC IRRIGATION SYSTEM CAN SENSING SOIL MOISTURE CONTENT
This project is designed to water plants regularly. The circuit
comprises of sensor parts built using op-amp IC LM358. Op-amp’s are configured
here as a comparator. Two stiff copper wires are inserted in the soil to sense
whether the soil is wet or dry. The Microcontroller is used to control the
whole system by monitoring the sensors and when sensors sense the dry condition
then the microcontroller will send command to relay driver IC the contacts of
which are used to switch on the motor and it will switch off the motor when all
the sensors are in wet condition. The microcontroller does the above job as it
receives the signal from the sensors through the output of the comparator, and
these signals operate under the control of software which is stored in ROM of
the MC.
13--GSM BASED MONTHLY ELECTRICITY ENERGY METER BILLING WITH DISPLAY TO THE USER
Summary
The main
objective of the project is to develop a wireless energy meter. The microcontroller
takes the reading from the energy meter and displays the reading on the LCD.
The reading of the energy meter is also sent to the cell phone of the user by a
message through GSM modem. This project is powered by an on-board power supply
takes the ac power and converts it into dc power that is fed to on-board
devices and integrated circuits.
14--AUTOMATIC SELECTION OF ANY AVAILABLE PHASE, FROM A 3 PHASE SUPPLY SYSTEM
Summary
The project is to provide supply to the single phase load if any of the phases, out of the 3 phases go missing. It is to be supplied with a 3phase power i.e., the three transformers are connected to the 3 phases supply. If any one of the phase is not available ,the NAND gates monitor the same at the low voltage of DC derived from ac of the secondary of the transformers to deliver output to the relay driver IC to change the load to the next phase through the contacts those are fed from all the three phases available .Abstract
15--Title--SINGLE PHASING, OVER VOLTAGE, OVER LOAD AND OVER TEMPERATURE PROTECTED INDUCTION MOTOR
Summary
The basic
idea for the development of the project is to provide safety to the Induction
Motor if any of the phases, out of the 3 phases is missing and also if the
temperature of the motor during operation exceeds the prescribed value, it stops
immediately. The kit is supplied with a 3phase power i.e., the three
transformers are connected to the 3 phases supply. If any of the
phase is not available ,or the temperature goes high the voltage at +ve
terminal of the corresponding comparator is more than -ve, thus making the
output to go high end the transistor conducts making the relay to operate which
disconnects the supply to 3CO relay and the motor is disconnected from the supply.
