How to Use a Washing Machine Motor

About: Hello friends i show how to make stuff with no skills easy to replicate step by step from powerbanks,generator,invertors and so on thanks

Hi there in this tutorial i will show you how to connect,use and repurpose an electric motor fund in most of the washing machines, an electric motor that wired properlly can run on AC and DC with comparisons

Step 1: 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.
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

Step 2: 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.

Step 3: 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.

Step 4: 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.

Step 5: 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.

Step 6: 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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    5 Discussions

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    bongodrummer

    Tip 22 days ago

    A battery pack is great for testing these motors, but readers of this that want to use the motor at more like it's rated torque will need to use mains voltage (dangerous but possible). I have an Instructable that covers a few different speed control options here: b.link/machine78
    And a video of 4 control circuits here:

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    theAgirl

    Question 2 months ago on Step 5

    I have a washing machine motor I want to connect to a 4x4 box fan

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    Paul. Byrne8

    4 months ago

    I have washing machine motor and motor speed controller. How do I wire them.

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    TweborN

    Question 7 months ago on Introduction

    Hi thankyou for the video I am very interested in doing this. I want to ask you : the motor originally ran from 240Vac but you were testing it with an 18V dv battery pack. Was this only for an experiment or could it be useful if run it from 18V ? I would prefer not to use 240V in my projects in case I electrocute myself.

    1 answer
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    woutera3TweborN

    Answer 7 months ago

    That depends on the applivation of the motor.

    If you need a lot more power you have to feed it with a higher voltage.

    Just to spin the motor you need a lot less.

    Be wisely with electricity, if you keep your mind to it even higher voltages are usefull.

    For safety it is always possible to use a 1:1 safety transformer, this decouples your machine from mains earth so when you touch it by accident you are not conducting electricity to earth.