How does a power generator work?
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Typical coal power generator-\nCoal is burnt producing heat\nHeat is transferred to water to form steam\nSteam, on its way to cooling back to water, runs across a giant fan called a turbine \nThe turbine turns an electric generator thus making electricity
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It's a simple matter of adding up the power required by everything, EVERYTHING, you want connect to your supply.\n\nMachines, tools, heating, cooling/air conditioning, ventilation fans, lighting, computers, printers, copiers, telephones, fax machines, answering machines, refirgerators, freezers, water coolers, security devices, etc, etc, etc.\n\nChoose a generator with a capacity at least a bit greater than your total load, but preferably quite a bit more to allow for future load increase.
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anybody that produced generators!
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They're called Powerisers.   http://eng.poweriser.co.kr/company/preface.html
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They have back up generators available in case the power fails.
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http://science.howstuffworks.com/electricity.htm
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I assume you are talking about Alternating Current which runs at a specific frequency.\n\nAt the generating plant the electricity from all generators run at the same frequency (60 Hz in the US)\n\nWhen a generator is brought on line and connected to the power grid there is a device that measures the frequency of the generator and compares it to the frequency of the grid.\n\nThe electricity from the generator is brought to slightly higher or lower than the frequency of the grid...and this device will then show when the two are in "synch"....at that point you close the breaker that connects the generator to the grid.
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http://www.mygen.co.uk/index.php?page=generators
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In the same manner as a turbine with a horizontal one, by the water moving the blades. its tha rotation that generates the power. The alignment of the shaft doesn't matter, its the force transferred to the generator/alternator that matters.\n\nThere shouln't be any significant change in the turbine blades.\n\nIt may be easier in certain designs to couple the generator set to the shaft if its mounted vertcially in some locations.
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The exciter is used to provide current for the electromagnets in the rotor. An AC voltage is developed in the exciter windings, then rectified to DC and fed to the rotor to generate the magnetic fields around the poles.\n\nThere are some good explanations of generator operation here http://www.antonine-education.co.uk/Physics_GCSE/Unit_3/Topic_8/topic_8.htm and here http://www.engineersedge.com/motors/ac_generator_design.htm
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The quick answer is no, if you could you'd have invented perpetual motion. \n\nIf the battery has a certain amount of stored energy, when it turns the motor some energy is lost (the motor will be about 80-90% efficient) with the same lost in the generator giving and approximate conversion of 60-80%.\n\nThe batteries themselves will also be inefficient in the charge discharge cycle, more so than the motor-generator combination although I haven't found a specific value. However, whenever you charge a battery it gets warm and this warmth is due to energy losses in the charge cycle. \n\nCoupled to all of these would be electrical losses in the wiring, but these would be minimal compared to the other losses.
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While any non-zero rotational velocity will produce a varying voltage, there are two considerations to keep in mind.\n\nFirst, at low rotation rates, the amplitude of the voltage produced will be tiny, and so the system will not be producing much useful power.\n\nMore importantly, if the turbine is to be connected to a local power generation grid, it must generate power at exactly the desired frequency for the grid, and must deliver that power in phase (it's bad if your generator pulls when all the other generators in the system are pushing, because in the absence of protection systems your generator will suddenly receive a huge current injection from all the other generators).\n\nTypically a power generator isn't a simple winding coil, but three coils generating voltages 120 degrees out of phase, but each coil is still generating a voltage at the frequency compatible with the power generation grid.
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Kilowatt\nCost depends on method of generation and location
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Large commercial generators do not have permanent magnets. The rotating field is magnetized via slip rings that feed current into it's windings. The current is generated by the exciter which is either a small generator attached to the end of the shaft or, in modern applications, an electronic SCR converter.
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Get some power generators.
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It would actually be pretty easy to use a bike to generate electricity.  You would need a bike, wire, magnets, and some resistors to get the right current and voltage.  If you could find a way store to store the energy in some type of battery, that would be ideal.  Otherwise, you could use it to power small appliances.  Most people don't do it because they don't know it's possible, don't care, don't know how, or don't think about it.  If you are interested in that, you should design something.  It would take a lot of bike riding, but it would be possible (especially if you had a good transformer to step up the current, which would be easy to build as well).
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An electric generator is a device used to convert mechanical energy into electrical energy.\n\nThe generator is based on the principle of "electromagnetic induction" discovered in 1831 by Michael Faraday, a British scientist. Faraday discovered that if an electric conductor, like a copper wire, is moved through a magnetic field, electric current will flow (be induced) in the conductor. So the mechanical energy of the moving wire is converted into the electric energy of the current that flows in the wire.The mechanical energy needed to turn the generator comes from the brown hand crank at the front of the generator. In a hydroelectric power plant, the mechanical energy to turn the generator comes from the water turbine, which is turned by the force of falling water. The hand crank causes the red wire to spin inside a magnetic field (the blue lines). As Faraday learned, moving the wire through the magnetic field causes electric current to flow in the wire. The turning red wire is connected to a volt meter, which shows the amount of electric current that is produced. In a hydroelectric plant, the generator is connected to transmission lines that deliver the electricity to your home or business.\n\nThe controls allow you to control the speed and direction of the generator and turn portions on and off for greater clarity. You can also use the radio buttons to show a direct current, or DC generator (with commutator) or an alternating current, or AC generator (without commutator).