ELECTRIC HUB

 

 

 

 

 

 

 

 

   

 

 Modelling of Parallel Hybrid electric vehicle This Video gives you a brief explanation regarding Modeling of Hybrid electric vehicle and can also be used for college level PPT                                   Thank you

Wireless Transmission Presentation  This Video gives you a brief explanation of Wireless Transmission of power and can also be used for college level PPT  Thank you

 

 AC SERVO MOTOR WHAT IS A SERVO MOTOR ? Servo Motor is also known as a Control Motor. They are used in Feedback Control Systems but not used for continuous energy conversion. The Principle of Servo Motor is similar to that of other electromagnetic Motors but the Construction and Operation are different. Power rating varies from fraction of watt to hundreds of watts. BLOCK DIAGRAM OF AC SERVO MOTOR Like wise in all other control systems,the input is passed through the Amplifier and then through the Servo Motor and if the output obtained is desirable the there is not use of the feedback loop. If the output Obtained is not desirable then the error in the output is fed back to the error detector and then through the Amplifier,as the error is very minute it is to be amplified and the given to the Servo motor. CLASSIFICATION OF SERVO MOTORS AC SERVO MOTOR CONSTRUCTION                (i)Stator (ii) Rotor Stator has two Distributed Windings with a di...

LED DRIVER CIRCUIT Light Emitting Diode is a special kind of diode that emits energy in the visible band of the electromagnetic spectrum. However, it conducts in forward bias the same as the p-n junction diode. It is used as an  optoelectronic  device.  Now let me ask you a simple question. At our home we get 230 volts AC supply, can we give this directly to an LED? The answer should be Of course not. This is because an LED needs a constant current input. Thus to serve this purpose, we need a driver circuit.  what is OPTOELECTRONICS ? It is a branch of Technology which deals with the combined use of Electronics and Light DESIGN OF LED DRIVER CIRCUIT To the main supply, an AC capacitor is connected in a line with the mains supply. Then, a resistor of 390k ohm is connected in parallel with this capacitor. This is to discharge the capacitor in the absence of supply. One more resistor of 10Ω is connected between the mains supply and the rectifier which can be called fuse...

Cable: Cables are generally used for the Transmission and Distribution of Electric Power inspite of its numerous Advantages.The type of cable used will depend upon the Voltage and Service requirements.                    The Underground cable used for Transmission of power at high voltage consists of on central core or a number of cores(two,three or four) of tinned stranded copper conductors(sometimes use of Aluminium conductors is also made) insulated from each other by paper or varnished Cambric or vulcanised Bitumen or impregnated paper. Cable A Metallic sheath of lead or alloy of Aluminium is provided around the insulation to protect it against ingress of moisture.For the protection of metallic sheath against corrosion and from mechanical injury from the armouring a layer of bedding consisting of paper tape compounded with a fibrous material is provided over the metallic sheath.Also sometimes jute strands or hessian tape ...

Corona: When an Alternating Potential Difference is applied across two conductors,whose spacing is large in comparison with the diameter,then the atmospheric air surrounding the conductors is subjected to electrostatic stresses.At low voltage there is no change in the condition of atmospheric air around the conductor.However,when the potential difference is gradually increased,a stage arrives when a faint luminous glow is violet colour appears together with a hissing noise.This phenomenon is called VISUAL CORONA and is accompanied by the production of OZONE which is readily detected because of its characteristic odour.The glow is due to the fact that the atmospheric air around the conductor becomes conducting due to electrostatic stresses. DISCHARGE OF CORONA                      If the potential difference is raised still further,the glow and the noise will increase in intensity until eventually a spark over will take pla...

Classification of fuels:- Fuels may be classified as Solid,Liquid and Gaseous and as natural or prepared.The various fuels commonly used for combustion in the Thermal Power Plants are coal,Oil and Gas.Gaseous fuel is rarely economical except when the Power Plant is located near natural gas field or Gas manufacturing industries.Oil is used only where it is plentiful and cheap.Coal is the most commonly used fuel in Thermal Power Plant.                The coals can be classified in increasing order of heat value,namely peat,lignite,sub-bituminous,bituminous,semi-bituminous,semi-anthracite,anthracite and super anthracite coals. Coal Mine                         Peat is the first stage in the process of transformation of buried vegetarian into coal.Its enthalpy of combustion is about 700 kcal/kg.Owing to high moisture content,peat is not suitable for power plants.Lignite is the ne...

Boiler:- Boiler is used in Steam Power Plants are of two types  1.Fire Tube Boiler : Use restricted to low cost,small size and low pressure about 10kg/cm^ plants  2.Water Tube Boilers : A Boiler may be a straight or bent tube,single or multi drum,horizontal or vertical or inclined tube,longitudinal or cross drum Boiler                          Research and development during last 50 years has led to large Steam Generating capacity Boilers having improved design and construction.Today Boilers are more efficient,compact and lighter in weight in comparison to Old time Boilers.                    Boilers can burn low grade fuels.Super critical pressure Boilers with pressure as high as 350 Atm,temperature 600 degree centigrade and capacity 1,00,000 kg/hr are available now.

Operation of Steam Power Plant Based on a clear Schematic: Steam Power Plant basically operates on the Rankine cycle. Schematic Arrangement of Steam Power Plant Coal is burnt in a Boiler,which converts water into steam. The Steam is expanded in a Turbine,which produces Mechanical Power driving the Generator coupled to the Turbine. The steam after expansion in Prime mover is usually condensed in a Condenser to be fed into the Boiler again. In practise,however,a large number of modifications and improvements have been made so as to effect economy and improve the Thermal Efficiency of the plant. The working of a modern Coal-fired Steam Power Plant ca be studied conveniently with the help of various Cycles. Main Constituents of a Steam Power Plant are.         1.Boiler.         2.Boiler Furnace         3.Super heater and Re heater.         4.Economiser and Air Preheater.     ...