How to Use a Washing Machine Motor
The Washing Machine Motor: This electric motor is called universal motor. The universal motor is a type of electric motor that can operate on either AC or DC power. It is a commutated series-wound motor where the stator's field coils are connected in series with the rotor windings through a commutator.
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It is often referred to as an AC series motor. The universal motor is very similar to a DC series motor in construction, but is modified slightly to allow the motor to operate properly on AC power. This type of electric motor can operate well on AC because the current in both the field coils and the armature (and the resultant magnetic fields) will alternate (reverse polarity) synchronously with the supply
Washing Machine Motor Tach Coil: In the back side of the motor you can find the tacho coil with we will not use but is good to know if you need to replace it with a spare parts if this one is gonna break.By the name i am guessing that with this component the washing machine controller is sensing the rpm of the motor and it regulates the speed accourding to the faze of the programm.
Washing Machine Motor Specs: Universal motors have high starting torque, can run at high speed, and are lightweight and compact. They are commonly used in portable power tools and equipment, as well as many household appliances. They're also relatively easy to control, electromechanically using tapped coils, or electronically. However, the commutator has brushes that wear, so they are much less often used for equipment that is in continuous use. In addition, partly because of the commutator, universal motors are typically very noisy, both acoustically and electromagnetically.
Universal Motor Wiring Diagram: This picture is from a washing machine motor indesit repurposed in a dc operated motor by watching the original connection we will find that is got 8 pins starting with the tacho coil 8+7 that i showed previously we will not use in this configuration.Moving down 6 is not connected 5+4+3 are the stator connection wich loochs like a single coil with 2 connection and another aditional center tap connection.The last 2+1 pins are the brushes that you will find on the side a carbon road incastrated in a black plastic cover.
Washing Machine Motor Direct Wire: Even when used with AC power these types of motors are able to run at a rotation frequency well above that of the mains supply, and because most electric motor properties improve with speed, this means they can be lightweight and powerful. However, universal motors are usually relatively inefficient: around 30% for smaller motors and up to 70-75% for larger ones. The connection of this motor for direct drive using it for a period of time with no controller in low application like belt sander,electric bike,electric boat,wood splitter and more. We will connect one terminal of the stator 3 with one of the brush 2 then the ends 1 will be connected to the plus therminal of the battery or AC power source and then the last stator terminal 5 to the minus therminal of the battery or the other connector of AC 220v/120v source.
Washing Machine Motor Uses: Operating at normal power line frequencies, universal motors are often found in a range less than 1000 watts. Their high speed makes them useful for appliances such as blenders, vacuum cleaners, and hair dryers where high speed and light weight are desirable. They are also commonly used in portable power tools, such as drills, sanders, circular and jig saws, where the motor's characteristics work well. Many vacuum cleaner and weed trimmer motors exceed 10,000 RPM, while many Dremel and similar miniature grinders exceed 30,000 RPM.
Universal motors also lend themselves to electronic speed control and, as such, were an ideal choice for domestic washing machines. The motor can be used to agitate the drum (both forwards and in reverse) by switching the field winding with respect to the armature. The motor can also be run up to the high speeds required for the spin cycle. Nowadays, variable-frequency drive motors are more commonly used instead.
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