Terms Commonly Used
Coil- Is a wire used in the motor or generator. It is close wound in the stator or in the rotor.
Core Loss- Is the power absorb by the motor even in its no-load.
Current- Is the ratio of the voltage and impedance.
Generator- Is a device capable of transforming mechanical energy into electrical energy.
Impedance- Is the combination of resistance and reactance of the body. It is the degree to which an object oppose electric current
Motor- Is a device capable of transforming electrical energy into mechanical energy.
Magnetizing Impedance- Is the impedance in the core of a motor, generator of transformer.
Phase Angle- Is the angle on which the phase voltages differs.
Power Factor- Is the cosine of the difference in the angle of voltage and current.
Primary Winding- Is the winding located in source side of a transformer.
Rectifier- Is a device capable of converting Alternating Current into Direct Current. It acts as a
one way switch, Open circuit in reverse bias and close circuit in normal bias.
Rotor- Is the part of a motor or generator that is moving.
Secondary Winding- A winding located in the load side of a transformer.
Stator- Is the part of a motor or generator that is not moving.
Transmission Line- Is a connection of wires where the power is being distributed.
VA- Volt-ampere, is the product of voltage and current
VAR- Volt-ampere-reactive, is the energy in a reactive loads such as inductors and capacitors.
Watt - Is the energy of a non-reactive loads, such as resistors.
Tuesday, April 16, 2013
FREE ENERGY
What is Free Energy?
Free energy in relation with electric generation is any source that can supply power for free. Free in terms that here is no need for fuel or any energy transformations required. It is independently producing power in unlimited time, no power decay or any reduction of performance. Free energy can be considered as an ideal power source that has constant voltage and current.
Is there really a free energy?
Because of the global power crisis, people are still searching for new ideas on building alternative source of energy. The challenge is that, is free energy possible?, Theoretically, yes, in reality??...
There is a possibility that a free energy source is possible, actually, some already starting building it. Actually the idea about the free energy is simple, its just a combination of ideas. All we need is idea about magnetism, Law of Inertia, and friction.
Lets discuss first the idea of perpetual motion because this is part of the free energy.
Magnets are natural earth materials that constantly producing magnetism. Magnets are used in motors and generators for the repulsion and attraction. If you point a magnet near a metallic object, the magnets attracts the metal and most probably they will stick together. It is one main idea of the perpetual motion.
Once were finished building the perpetual motion object, we can now start the free energy generator. Im not yet finished building it so I will post it later.
Free energy in relation with electric generation is any source that can supply power for free. Free in terms that here is no need for fuel or any energy transformations required. It is independently producing power in unlimited time, no power decay or any reduction of performance. Free energy can be considered as an ideal power source that has constant voltage and current.
 |
| Free Energy can be assumed as Ideal Source |
Is there really a free energy?
Because of the global power crisis, people are still searching for new ideas on building alternative source of energy. The challenge is that, is free energy possible?, Theoretically, yes, in reality??...
There is a possibility that a free energy source is possible, actually, some already starting building it. Actually the idea about the free energy is simple, its just a combination of ideas. All we need is idea about magnetism, Law of Inertia, and friction.
Lets discuss first the idea of perpetual motion because this is part of the free energy.
Magnets are natural earth materials that constantly producing magnetism. Magnets are used in motors and generators for the repulsion and attraction. If you point a magnet near a metallic object, the magnets attracts the metal and most probably they will stick together. It is one main idea of the perpetual motion.
Once were finished building the perpetual motion object, we can now start the free energy generator. Im not yet finished building it so I will post it later.
Monday, April 15, 2013
TRANSFORMER
Transformers
What is transformer?.
A transformer is a device that is use to step-up or to step-down the voltage in the source. Transformers is composed mainly of two or more wires that is not connected, wound in a metallic object such as iron. Picture below is one examples of commonly used transformers in many of our appliance. The second picture below is the transformers used in the distribution in transmission lines.
Those big and small transformers has the same function, either to step-up or to step-down voltages.
What is inside the transformer?
For common appliance transformer, inside is two unconnected wires. Wires are not connected in actual, but they are connected magnetically. What will happened in the primary winding will be felt by the secondary winding. The voltage in either winding is equal
We can also say that the voltage in the primary winding is proportional to the voltage in the secondary winding by a factor of N1/N2, where N1 and N2 is the the number of turns in the primary and secondary windings respectively. The voltage and number of turns ration is constant.
N1/V1=N2/V2 = C
For the current relation in the transformer, if the transformer is a step-down transformer, the current increase by a constant. This constant is equql to the ratio of the primary and secondary voltage.
V1I1=V2I2
For A Three Phase Transformers
For a three phase transformers, the output voltage in its output has the same magnitude but different in phase angle. The current also if assumed a balance load has the same magnitude but different int phase angles. The phase angle diffenrences for the voltage is 120degrees and for the current if assumed a balance load is equal to 120 degrees. The current in phase angle and magnitude differs if the load in not balance.
Unbalance load means that the load in phase A, differs with that of phase B, and differs with phase C or vise versa. Three phase transformers are commonly used in machines that require large amount of power since three phase tranformer supplies 3times that of the single phase.
What is transformer?.
A transformer is a device that is use to step-up or to step-down the voltage in the source. Transformers is composed mainly of two or more wires that is not connected, wound in a metallic object such as iron. Picture below is one examples of commonly used transformers in many of our appliance. The second picture below is the transformers used in the distribution in transmission lines.
 | |
| Appliace Transformer |
 |
| Distribution Transformers |
What is inside the transformer?
For common appliance transformer, inside is two unconnected wires. Wires are not connected in actual, but they are connected magnetically. What will happened in the primary winding will be felt by the secondary winding. The voltage in either winding is equal
-
V = Ndf/dtwhere:V= is the voltage in the windingN= is the number of turns in winding
df/dt= is the rate of change in magnetic flux with respect to time
 |
| http://en.wikipedia.org |
N1/V1=N2/V2 = C
For the current relation in the transformer, if the transformer is a step-down transformer, the current increase by a constant. This constant is equql to the ratio of the primary and secondary voltage.
V1I1=V2I2
or
I1/I2=V2/V1
For A Three Phase Transformers
For a three phase transformers, the output voltage in its output has the same magnitude but different in phase angle. The current also if assumed a balance load has the same magnitude but different int phase angles. The phase angle diffenrences for the voltage is 120degrees and for the current if assumed a balance load is equal to 120 degrees. The current in phase angle and magnitude differs if the load in not balance.
Unbalance load means that the load in phase A, differs with that of phase B, and differs with phase C or vise versa. Three phase transformers are commonly used in machines that require large amount of power since three phase tranformer supplies 3times that of the single phase.
PORTABLE ELECTRIC GENERATOR
Portable Generators
Even in our Electric Generation improves as compare to past decades, we still facing some problems regarding power shortage or power loss(black outs). This thing is unpredictable, unforeseen unwanted events. This sometimes occur in our most important situation or events, so the used of portable electric generators are necessary.
Portable Generators are the most commonly used electric generators in any places and country. It is used mainly in the event of power shortage or blackouts.
Portable electric generators are composed or one generator and one motor which is run by either a diesel or gasoline. The motor and generator is connected mechanically. Portable electric generators can either be a single phase or a three phase in construction. Single phase electric generator has only one output while three phase electric generator has 3 outputs of the same magnitude but different in phase angles. A single phase electric generator can be used with many of our appliance, except with those big machines that is used with a three phase source. A three phase electric generator can be used to run a single phase load or any appliance in our house, it is can also run a big three phase machines. Loadings in Generators vary with the its rated value of KVA(kilo-volt-ampere) or MVA(mega-volt-ampere). Remember that for the safety of the generator and your appliance you must put some allowance of 15 percent of the overall load, meaning if you have a 100KVA you must put only a load of 85KVA for safety.
The picture below is an example of a portable Electric Generator that has a frequency of 60hertz, Voltage of 220Volts and KVA Rating of 15KVA.
image:http://en.wikipedia.org
Even in our Electric Generation improves as compare to past decades, we still facing some problems regarding power shortage or power loss(black outs). This thing is unpredictable, unforeseen unwanted events. This sometimes occur in our most important situation or events, so the used of portable electric generators are necessary.
Portable Generators are the most commonly used electric generators in any places and country. It is used mainly in the event of power shortage or blackouts.
Portable electric generators are composed or one generator and one motor which is run by either a diesel or gasoline. The motor and generator is connected mechanically. Portable electric generators can either be a single phase or a three phase in construction. Single phase electric generator has only one output while three phase electric generator has 3 outputs of the same magnitude but different in phase angles. A single phase electric generator can be used with many of our appliance, except with those big machines that is used with a three phase source. A three phase electric generator can be used to run a single phase load or any appliance in our house, it is can also run a big three phase machines. Loadings in Generators vary with the its rated value of KVA(kilo-volt-ampere) or MVA(mega-volt-ampere). Remember that for the safety of the generator and your appliance you must put some allowance of 15 percent of the overall load, meaning if you have a 100KVA you must put only a load of 85KVA for safety.
STEAM GENERATOR
Steam Generator
Our Earths core is composed mainly of hot molten rocks called magma or lava if already reach the surface. Such objects that comes out in a volcanic eruption is one good example of lava. The modern steam generator use this hot molten rocks in order to produce electricity. The main component used in generating power in steam generator is 100 percent water. The water is being heated constantly and transforming the water into high pressure steam. This very high pressure steam is used to run a huge steam turbine to transforms the energy from the steam into mechanical energy and finally into electrical energy. After the lava heated the water, it will eventually loses its heat energy, and it will be pushes back to the earths core to be reheated again. The process in continuous.
In the diagram above, the red hot molten materials are pump to the surface and heat the water inside the generator to produce high pressure steam. The high pressure steam runs the steam turbine and produce power which is distributed to the transmission lines. After the red hot molten materials losses its heat energy, it becomes blue cooled and it is push below the Earths core to be reheated again and can used again.
Our Earths core is composed mainly of hot molten rocks called magma or lava if already reach the surface. Such objects that comes out in a volcanic eruption is one good example of lava. The modern steam generator use this hot molten rocks in order to produce electricity. The main component used in generating power in steam generator is 100 percent water. The water is being heated constantly and transforming the water into high pressure steam. This very high pressure steam is used to run a huge steam turbine to transforms the energy from the steam into mechanical energy and finally into electrical energy. After the lava heated the water, it will eventually loses its heat energy, and it will be pushes back to the earths core to be reheated again. The process in continuous.
Saturday, April 13, 2013
MULTIPLE PHASE GENERATORS
Multiple Phase Generators
Techniques have been develop on how to increase the power produce by a AC generators. One of the techniques used is increasing the number of phases. Increasing the number of phases means that increasing the number of outputs with same frequency, same magnitude but with different in phase angles.
For example in a two phase AC generator, the phase angle differences between the two output voltage is
The power produce by a two phase AC generator is twice that of the single phase generator.
And the commonly used multiple phase generator is the 3pahse AC generator. It power is 3times that of the single phase AC generator. The voltage output of a 3phase generator is shown.
Va=V<00 and Vb=V<-1200 and Vc=V<1200
and the output waveform is
Techniques have been develop on how to increase the power produce by a AC generators. One of the techniques used is increasing the number of phases. Increasing the number of phases means that increasing the number of outputs with same frequency, same magnitude but with different in phase angles.
For example in a two phase AC generator, the phase angle differences between the two output voltage is
V1=V<00 and V2=V<900
The power produce by a two phase AC generator is twice that of the single phase generator.
And the commonly used multiple phase generator is the 3pahse AC generator. It power is 3times that of the single phase AC generator. The voltage output of a 3phase generator is shown.
Va=V<00 and Vb=V<-1200 and Vc=V<1200
and the output waveform is
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