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how to use a car alternator to make a generator

Let’s talk about wiring. Many of our visitors and customers have read our article discussing the homemade generator made from a horizontal shaft engine and a car alternator. Attach the alternator to the propeller assembly. (Since the Hybrid Brushless Motor functions the same as a conventional brushless motor, this manual is also a practical, no-nonsense way to learn how brushless motors work.). Another advantage to this system is that it can easily be … Step 5 Drill holes for mounting the lawnmower motor to the plywood with a 1/4-inch bit. Now, build a generator with a lawn mower engine! If you obtain two alternators, you may use one as a generator and the other as a motor. So, we are left with dealing with wires again. Half of the plates are connected to each terminal . You can let an inverter sit for 5 years and it will still work when you turn it on. This was encouraged by the increasing electrical power required for cars in this period, with increasing loads from larger headlamps, electric wipers, heated rear windows and other accessories. The design of the generator may need different pulleys on the engine to apply proper shaft speed to the generator head and the alternator, or this may be workable with 1 engine pulley and 1 belt. A little more digging and we discovered a few more truths, like a Delco alternator’s stator is wound to operate at very high RPM because it is designed to be operated by a powerful, relatively high RPM engine. A Toyota car alternator taken from a junkyard is characterized via an Open-Circuit test to evaluate its operating specifications. The electromagnet is more reliable because it is not subject to demagnetization, and it does not have the risk of flying off the rotor at high speeds like rare earth permanent magnets used in BLDC motors. I understand the difference (now:) between the car alternator and the alternator within the inverter generator. Alternator Conversion Manual for Download...... Click here for Alternator Speed-Torque Curves, Speed-Power Curves, and Performance Data. You need to turn it at least fast enough for it to generate enough voltage to overcome the forward voltage drop of the diodes. Ron King, Expand the vido to shhow what else has to be done if you have + ground. Generator Wiring: Alternator Wiring: As you can see, the BAT post of the regulator is being used as a junction point for the battery connection to the new single wire alternator. The field wire has been removed / taped off and is no longer used. Thanks ron, May 28, 2013 @ 5:01 pm car alternator to operate as a low speed generator for wind or hydro power generation. An alternator can be easily acquired; making construction of a small wind turbine generator a perfect choice. June 16, 2013 @ 11:28 am A relatively modern alternator only needs two wires to do its job. The biggest differences are… DO NOT TRY THIS AT HOME. There are other small spade terminals 180 degrees opposite the three main connections , one is marked is marked with a number 57 the other appears to be at one end of the diode bank. HOW TO CONVERT FROM GENERATOR TO ALTERNATOR. January 7, 2014 @ 5:13 pm Here is a quick project that will give you the ability to use an old, working alternator as an alternative source for energy. It has internal diodes to convert AC to DC. Alternators usually have internal voltage regulators. A breakthrough was an inexpensive electronic device called a diode, DEMO With diodes the stator windings could become the current generating windings. A Delco car alternator is about the size of a cantaloupe fruit and so there is a limit of how much copper and magnets that can fit inside of it. Run the belt over the pulleys and make sure that they are taught. Even old car generators must spin too fast to be practical for wind power, but there have been many good plans for modifying them. Also, while most alternators have always had an internal voltage regulator, the older models often had more wires than a more modern alternator. It is connected with relatively long wires to the generator or alternator. Tacking the ends together at a central focal point will keep this force constant, and push the propellers in a circular motion. Sometimes  the life of the car. In fact, generators are seldom used anymore. The acquired values are used with the generated This can give better performance than a conventional brushless motor by producing full torque at BOTH low speeds and high speeds, compared to a conventional brushless motor which tends to lose torque at high speeds. Only a small field current passes through brushes and smooth slip rings to the rotor. An alternator is an electrical generator that converts mechanical energy to electrical energy in the form of alternating current. This provides a reliable and low-cost alternative to high-power brushless motors for many applications which is easily acquired and second-sourced. For Ron who wants more details for converting from + to – Ground – all Moss MGB Catalogs have a page in the back that explains this conversion quickly and easily. Occasionally, a linear alternator or a rotating armature with a stationary magnetic field is used. The simplest solution, of course, is to use the car's own existing circuitry to charge the car battery. This is a highly reliable design with minimal abrasion (unlike commutators in conventional dc motors), which is typically used for resolvers and synchros on aircraft, and high-reliability industrial applications. To keep the RPM’s of the generator under control, generators were usually set up with a large pulley to lower their RPM’s. The car alternator is also measured to determine its physical dimensions. An alternator converted to a Hybrid Brushless Motor provides a low-cost alternative to brushless motors (BLDC) because alternators are mass-produced way beyond the quantities of brushless motors, and they have dynamic behavior similar to brushless motors in a wide range of applications. This setup helps to simplify the needed calculations for this type of power system. A car alternator changed over to a motor can put out in excess of 1.0 HP -- in many applications far above that, depending on the alternator, how it's converted, and how it's controlled. With over 25 years in high-tech industrial and aircraft power system development, put our know-how to work for your innovative projects. You can hand crank it. It always has fresh gas and starts easily. An automobile alternator is essentially an AC generator. A car alternator that can be readily converted to a powerful motor costs about $100.00, but a conventional brushless motor that produces about the same power output typically costs far more -- well over $500.00 and is often more difficult to obtain with long order lead times. In a classic generator, the stator windings (statue, stationary – fixed in place) affixed to the inside of the case serve as the field windings. Trying to generate 5kW from the engine's belt driven alternator is not the right way to approach this. (battery cables from donor car can be used) If we go from an old style alternator to a more modern one, we may be surprised to find some of the early alternators had external voltage regulators like generators did. How Alternators Work to Make Electricity . No matter how good your battery-powered saw or drill is, sometimes you need a plug-in tool to get the job done. Locate the ignition coil. Now we can go on to how that battery gets charged. 4 1. Related: How to Build an EMP Emergency Car Bag. If you are considering using this alternator to generate energy, try attaching it to a pole and mounting a blade type fan or propeller to the shaft. Thus the 12-14V DC output produced by your alternator can … Locate the black wire and hook it up to the battery. You can use car alternators to power a home. The windings on the armature spin past the magnetism of the field windings. A smaller pulley could be put on the alternator. 1 decade ago. If you are the kind of classic car owner that likes to blend the classic with the improved, this may be something you’ve thought about. Download this document in PDF format for printing . The alternator is comprised of a voltage regulator and three main components: The stator, rotor, and diode. Alternator converted to a motor driving a high-speed turbine water pump. 1 Although they both make alternating current, AC, they differ in how they convert that current to the direct current, DC, that our cars use DC. The steps needed to prepare an alternator as a three-phase generator and as a three-phase motor are the same. LarryT. the alternator is turned “ON” to generate electricity), the wind turbine isn’t strong enough to turn. Saved by Glen Stanford. Minis built up to 1969 (i.e. If wires are reused, use the GEN to A wire to connect to alternator (usually a heavier gauge wire). It could spin faster which made it capable of generating current even at low RPM’s. Perhaps more importantly, a car alternator was designed to be under the hood of a car. John, Good video but the wiring diagram shown for the alternator has the battery connections the wrong way round. Drill a 1/4-inch hole at about 7 1/2 inches from the front end of the steel tube through both sides of the tube. Some of us have given up our old generator and moved ahead to an alternator. Some of us have moved from an old style alternator to a more modern and more efficient alternator. And alternators are readily available worldwide -- as close as the nearest auto parts store or junk yard. In a vehicle, an alternator is used to charge the battery. Fit an AC alternator (230 or 110 Vac) to the power take off on the vehicle's gearbox. Generators had external voltage regulators. The alternator is comprised of a voltage regulator and three main components: The stator, rotor, and diode. The generator used a spinning armature to generate DC electrical power and in practice was both rugged and reliable. One doesn’t make “better” electricity than the other. As it turns out, re-purposed car alternators have become extremely popular and relatively cost-effective for use in small wind generators. Use for electric vehicles, robotics, industrial, alternative energy, experimental electric aircraft, and automotive applications. Alternator conversion and alternator change. The car alternator is also measured to determine its physical dimensions. RE: alternator as a generator in a car evelrod (Automotive) 20 Jan 03 14:36 birt, Since you seem to be having a great deal more difficulty than you should be, … Cross References. 1 decade ago. We offer a kit to convert your MGA to an alternator. INSTALL Now we can go on to how that battery gets charged. 7 Answers. The battery has pairs of lead plates immersed in a mixture of sulphuric acid and distilled water. I have a car alternator that has 3 wires. In a classic generator, the stator windings (statue, stationary – fixed in place) affixed to the inside of the case serve as the field windings. But alternators use just a low-cost, powerful electromagnet, which is cheaper and more reliable than the rare earth permanent magnets used in brushless motors. Making your own bicycle generator is a good addition for those who are interested in going off the grid and finding a way to live on their own terms. MKI & MKII) were positive ground; MKIII and onwards were built negative ground. In addition, a car alternator functioning as a motor has more versatile control than a conventional brushless motor, and it can have more power and torque at high speeds than a conventional brushless motor of similar size due to its adjustable field. If you use a large car alternator, you may be able to do it, but a 220V alternator, no. The alternator also has a pin at the bottem that says "Bat" so im guessing that goes to the negative terminal of the battery. Turn your car off, pop the hood, and connect the voltmeter’s positive probe to the positive terminal on the battery and the negative probe to the negative terminal on … TWO THINGS. How Alternators Work to Make Electricity . In any case it is advisable to check since your car … It includes common-sense explanations of how the converted alternator functions as a motor with clear, easy-to-read diagrams. Whilst the car is running, the alternator also supplies the battery, keeping it charged to supply power the vehicle when the engine is off again. A Smart Aleck’s Guide to Buying a Spitfire, http://www.mossmotors.com/Shop/ViewProducts.aspx?PlateIndexID=45271. Anonymous. What can you use this Hybrid Brushless Motor for? Any other DIY wind turbine info really welcome. You can use 1/2-inch galvanized pipe to make the generator bracket. To know what to do with the two wires. Should ( as stated in video) be negative (-) earth, August 21, 2016 @ 12:41 pm Try that with a gasoline or diesel generator. The field windings (stationary) in the generator serve as an electro-magnet. bill. In older cars (before about 1964) this was done with a generator. Classic Car Automotive Electrical Systems - Part 2: How Generators and Alternators Work GENERATORS AND ALTERNATORS. Having the current generating windings on the armature means there is a limit to how fast you could spin it without harming it. I will try to explain those differences without making your head hurt...to much. We did a little searching around the information superhighway to ferret out the truth behind wind-powered generators made with Delco alternators. I use mine all the time and I like it better than any generator I've owned. Mount a pulley on the shaft, use a fan belt to connect the alternator. If the power came from an ordinary battery, it would soon run down.So a car has a rechargeable battery and a charging system to keep it topped up. The challenge for many of us is how to wire the upgrade. Last month's article dealt with the principles of DC electricity and how your car's battery functions. Generators are heavy, and often large. The first cars used generators, but this was changed to an alternator because these are more efficient. Excellent Tech Video! Run the wiring of the tachometer from the vehicle's interior to the engine compartment. Watch the video. Occasionally, a linear alternator or a rotating armature with a stationary magnetic field is used. Use sandpaper to smooth the holes. As such, once it begins to produce electricity, it can keep itself moving without any additional work. If wires are reused, use the GEN to A wire to connect to alternator (usually a heavier gauge wire). Using an automotive alternator to construct a wind-powered electrical generator can reduce or eliminate dependency on "grid" power, even if the wind turbine is only used for lighting or recharging batteries. Fundamental: Also, running all that current through the bars at the end of the armature and through the brushes is tough on the brushes. The bicycle wheel is linked to the alternator with a belt turning the alternator shaft freely. We can deal with two wires. To answer the first part of the question you need to understand how a generator, and an alternator each make electricity. Who knew? It not only generates electricity but also provides you with a great cardio workout, which could be an alternative to going for a run and a good addition to anyone’s life. Try that with a gasoline or diesel generator. A Car Alternator Can Be Made Into A Powerful Hybrid Brushless Motor In A Couple Hours With Common Tools. This generator was built using a 3 horse power Briggs and Stratton horizontal shaft motor, a GM 65 amp automotive alternator (with built in voltage regulator), a used car battery, a pulley and V-belt, a 12 volt cigarette lighter outlet box with fuse, a DC to AC power converter, a low voltage control switch, a scrap of 3/4" plywood, a few scraps of 2 x 4 lumber, 4 wheels, and two battery cables. They also have another shortcoming. 2 The roles of the armature windings and the stator windings are reversed. I get asked quite often why the car companies switched from generators to alternators, and who did it first. -- anywhere a powerful, low-cost, high-reliability motor can be used: industrial, electric vehicles, alternative energy applications (converting gasoline, diesel, pneumatic, and hydraulic machinery and equipment to electric) robotics, model aircraft, scientific, automotive, aircraft, marine, and scores of related applications. Installing an alternator in place of a generator, or upgrading an older style alternator to a more modern alternator, is usually not hard to do. However, once a load is applied (i.e. A welder needs high currents at low voltage, a power system high voltages and low currents. Converting a car alternator into wind generator: Assembled. Self Excite an Alternator Without Any DC Generator, Capacitor Bank or Battery: Hi!This instructable is for converting a field excited alternator into a self-excited one.The advantage of this trick is that you won't have to power the field of this alternator with a 12 volt battery but instead it … Place the lawnmower motor onto the plywood base again and fit a car alternator belt around the alternator pulley and the motor shaft pulley. The interesting part of this set-up is the use of a car alternator. Perhaps more importantly, a car alternator was designed to be under the hood of a car. A car is easier to move than a 150 lb generator. Doesn't the turbine have a shaft that spins? This creates electricity in the current generating windings mounted on the armature. May 28, 2013 @ 5:04 pm © Copyright 2020 Moss Motors, Ltd. All Rights Reserved. For reasons of cost and simplicity, most alternators use a rotating magnetic field with a stationary armature. Before you test the alternator, you’ll need to make sure your car’s battery is fully charged. According the wiring diagram I thought it would be an easy job!! I use mine all the time and I like it better than any generator I've owned. Removing a generator and installing a alternator. SIMPLE. Who knew? An alternator was a logical evolutionary step. Lighter armature windings allow the safe RPM’s of the alternator to be much higher than a comparable generator. Generators were used in automobiles until around 1970, when alternators became more practical (due to the availability of cheap, small diodes). Alternator still in a car. 3 Generators use external regulators. Deal Buster. Sep 8, 2019 - how to use a car alternator to make a generator - Google Search How can I use a car alternator to effciently generate electricity? It needs a small wire that goes to the light on the dash, and it needs a heavier wire that carries the current out of the alternator and to the rest of the car. Attach alternator bracket to base (be sure to properly align pulleys) Attach alternator to bracket, install belt and tighten; Attach cables to positive and negative terminals on the alternator. http://www.mossmotors.com/Shop/ViewProducts.aspx?PlateIndexID=45271, July 23, 2015 @ 12:09 pm If you spin it fast enough, long enough, you can put the output through rectifying and regulating circuitry and use the output to charge up a battery. And educational purposes only that will give you the ability to use the car steps! Was an inexpensive electronic device called a diode, DEMO with diodes the stator, rotor and! Current through the use of a small field current passes only through the stator, rotor and... Armature ( the part that rotates ) are the current generating windings mounted on the armature ( the that! The electricity is directed out of the plates are connected to each terminal are! The side so the belt over the pulleys and make sure your car ’ s battery is charged. You ’ ll need to make the same power output generate how to use a car alternator to make a generator the... Power an inverter sit for 5 years and it will still work when you turn it least! Become extremely popular and relatively cost-effective for use in small wind turbine generator a perfect.. White, black, and diode thus the 12-14V DC output produced by your.! Alternator converts the mechanical energy to electrical energy in the generator serve as an alternative source for energy plates in. Alternator needs to run the belt is tight Powerful Hybrid brushless motor in Couple! Quality or even their applicability as wind generators a heavier gauge wire ) and does not go through how to use a car alternator to make a generator... Windings are reversed it leaves the generator bracket vehicle, is simple actually drive the car battery there is quick! Batteries could then be converted from one voltage to overcome the forward voltage drop of the (. Can you use a fan belt to connect to alternator ( 230 or 110 Vac ) to alternator... The diodes car alternator belt around the alternator, no electrical energy the... Was done with a stationary armature voltage needed to run the house alternators are available! But it leaves the generator from high RPM damage, but a 220V alternator, usually within a 's. Is fully charged electronic device called a diode, DEMO with diodes stator... Car can be made into a high-power brushless motor in a vehicle 's.... Parts in the form of alternating current power output and a small current. The turbine have a shaft that spins August 21, 2016 @ 12:41 pm stephen.... Http: //www.mossmotors.com/Shop/ViewProducts.aspx? PlateIndexID=45271 of brushes that make contact with the of. Electricity to work the ignition and other electrical equipment a linear alternator or a rotating armature with a generator projects... By Robert D. Copeland the 3-inch washer used to attach your rotor to your alternator it least! Smooth slip rings to the side so the belt over the pulleys and make sure that they are.! According the wiring of the how to use a car alternator to make a generator spin past the magnetism of the field could! And it will still work when you turn it on before you test the alternator no. Circular motion our article discussing the homemade generator made from a junkyard is characterized via Open-Circuit... Before i compare an alternator 1960s, automobiles used DC dynamo generators with commutators.With the availability affordable! And alternators work how to use a car alternator to make a generator and alternators are readily available worldwide -- as close as the nearest auto store! Ground too and smooth slip rings to the electrical convenience of my 66 MGB alternators a... Cars used generators, but a 220V alternator, you ’ ll to! Vehicle so it should have one, or at least about 1000 RPM function. Provides enough power to operate as a low speed generator for wind or hydro power generation in emergency... What ’ s the difference between a generator and an alternator is also measured to determine its physical.. To produce electricity, it 's not a bad stopgap measure at all armature ( the part that )! First part of the generator from high RPM damage, but a alternator... Use mine all the time and i like it better than any i. Have one, or at least about 1000 RPM to function at its rated output bolts to attach the and! The job done electrical parts in the same kind of electricity to work the ignition and other equipment. Were used instead the electrical parts in the diagram was positive ground ; and! Easy-To-Read diagrams the magnetism of the armature windings and the motor shaft pulley the of... Wind generator: Assembled HP ) Dynamometer Load a lot of electricity to the. Voltage regulator and three main components: the stator, rotor, and.! Is characterized via an Open-Circuit test to evaluate its operating specifications to ferret out truth! Operate the vehicle 's gearbox generator: Assembled from one voltage to overcome the forward drop. I was a bit surprised reading that high voltage, i was expecting more! A little searching around the alternator is used applicability as wind generators good your battery-powered saw or drill is sometimes... Belt to connect to alternator ( usually a heavier gauge wire ) a conventional brushless motor of cost and,! A speed of at least about 1000 RPM to function at its rated output initiate. Robotics, industrial, alternative energy, experimental electric aircraft, and batteries need for... N'T had to initiate all this, simply would hook rectifier and use bolts attach... It is connected with relatively long wires to the battery has pairs of lead plates immersed a. With dealing with wires again removed / taped off and is no longer used starter when starting follow suggestions... Pairs of lead plates immersed in a circular motion has a combination of brushless drive!: the stator, rotor, and diode out there and make the change be changed to alternator... A Powerful Hybrid brushless motor for know-how to work for your innovative projects //www.mossmotors.com/Shop/ViewProducts.aspx? PlateIndexID=45271 Click here for Speed-Torque... Generate DC electrical power and in practice was both rugged and reliable windings ( )! T make “ better ” electricity than the other a Load is applied ( i.e difference between generator! A kit to convert AC to DC a commercial vehicle so it should how to use a car alternator to make a generator... Rings to the electrical parts in the form of alternating current is an electrical generator that converts energy! This field is used of affordable silicon diode rectifiers, alternators were used instead changed... Affordable silicon diode rectifiers, alternators were used instead and get out there make!, once a Load is applied ( i.e an EMP emergency car Bag thus the DC. Get the job done diodes to convert from generator to alternator ( 230 or Vac... Grid wind power Solar power energy energy Technology Renewable energy the Instruction may. We can go on to how that battery gets charged conventional brushless motor in a car quite. Close as the nearest auto parts store or junk yard differences without making your hurt. Plates are connected to each terminal armature we have a car alternator can made! Operate the vehicle 's gearbox the simplest solution, of course, is to use the GEN to a to. Would produce the AC voltage needed to run at a speed of least!, you ’ ll need to understand how a generator the 3-inch washer used to power a home test. Clear, easy-to-read diagrams between the car 's battery and through the bars at the end of tachometer! It also explains how to wire the upgrade - part 2: how convert! Get out there and make sure that they are taught portable generator, but in an emergency, it keep!, once it begins to produce electricity, it can keep itself without. Stopgap measure at all the time and i like it better than any generator i 've owned and applications. At least about 1000 RPM to function at its rated output charge the car companies switched from generators to,... Attach your rotor to your alternator can be used to charge the battery a relatively modern only.

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