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00:00 – Intro
00:21 – Jaes
00:35 – Synchronous Motor
01:11 – Synchronism speed
01:48 – Problems
02:22 – Squirrel Cage
02:58 – Alternator
03:33 – Inverter
04:08 – Conclusions
The synchronous motor is an electric motor whose rotation speed is synchronized with the electric frequency of the alternating current and it is used in different fields where high precision is necessary.
In this video we will explain how this type of engine works.
JAES, for over a decade has been providing its customer with the best solutions for their supply chain and in their catalogue you can find any kind of synchronous motors from the leading manufacturers.
Let’s see how a synchronous motor is made.
The coils of the stator, that is the stationary part, are powered by a three-phase electric power of alternating current. In this way they produce a rotating magnetic field that rotates at a fixed speed related to the power frequency.
On the other hand, the coils of the rotor (the rotating part) are powered by direct current, hence producing magnetic fields of alternating polarity, like magnets, that’s why the rotor can also be made with permanent magnets.
The opposite poles of stator and rotor attract each other in such a way that the magnetic field of the stator rotates and attracts the rotor, forcing it to rotate at the same speed; this is a peculiarity of synchronous motors , they operate at synchronous speed: a constant speed given by the electrical frequency of the alternating current and by the number of pairs of rotor poles.
Motors with more coils in the rotor and stator have lower speeds but develop more mechanical torque.
These features make the engines unable to the to accelerate or decelerate.
Moreover, it is unable to withstand significant motor loads, in fact if the engine is in motion and it is accelerated or braked by external forces, the two magnetic fields fall out of synchronization, causing the rotor to stop.
If, instead, the rotor is stationary, the rotating magnetic field won’t start the rotor because the attractive and repulsive electric fields alternate too quickly.
In order to overcome these problems and improve the motor, a squirrel cage was introduced above the rotor coils.
During the starting phase, the rotor coils are not energised, therefore the rotating magnetic field induces electricity into the squirrel cage bars as in an induction motor. Once the synchronous speed is reached, the rotor coils are energized and start working again as a synchronous motor.
If you are interested in learning about how the induction motor works, watch our previous video.
Another characteristic of the synchronous motor is that it has the same constructive characteristics of an alternator, for this reason it is used by electric and hybrid cars (usually in the configuration with permanent magnets) so that it can function both as a motor to give power to the driving wheels, and as an alternator in the regenerative braking phase, to recover the kinetic energy and transform it back into electrical energy to be stored in the battery.
Watch our electric car and hybrid car videos to see how the synchronous motor is used.
In the last few years, thanks to the improvement of electronics, starting an electric cars is massively simpler; in fact, components such as inverters, can modify both the frequency and the power supply voltage.
As a result, starting from zero frequency and increasing it gradually, it is possible to accelerate the engine from a standstill, thanks to electronic speed control systems.
Follow our lessons on electronics to learn about, inverters, transistors, and all types of electric motors that we use every day.
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We suggest you to visit our website jaescompany.com to know our next projects.
Per tutti i nostri follower italiani, se volete guardare i nostri video in italiano iscrivetevi al nostro canale JAES italia: https://www.youtube.com/channel/UC1NLAk7aTBqOgG1D0YnCGIA
Thanks
very good thanks
This video is very important for people who play children card game on motorcycle
Ttthanks
Do you have a technical guide for synchronous motors?
What is the minimum size for synchronous motors? Who is your representative in the Philippines
Good video. Please give also video on asynchronous motor
Is a syncronous motor similar to the bldc motors that are used on quadcopters and stuff except instead of dc being turned on and off, we have proper ac that already does it by itself?
I covered 1 unit in 3min
What is the main advantage of a synchronous motor over an induction motor?
👉👉👉https://www.youtube.com/watch?v=p1NocQmPIz4&t=2s
The tiny synchronous mains motor found in many domestic microwave oven's plate rotator can be used as a low power high voltage generator , twisting the shaft quickly will light a Neon bulb ( or give you a shock ! ) …… DAVE™🛑
Thanks
So, why was it invested?
Nice
Same number of poles on rotor as on stator?
Masih canggihan motor bensin.
Excellent
A Synchronous Motor can also be used for power factor correction in a plant, by running it at leading power factor, making the plant as a whole operate more efficiently.
Very good, Sir. Another Youtuber ; Jeremy Fielding, does videos on all types of motors, for the inventor /handyman / creator of stuff. He knows, which motor to use, for most applications in / of the shop. Very good video….do one on delta / wye and 3 phase power. Another Youtuber, ' Kathy Loves Physics and History '' . This lady, does an excellent work, of the ' history ' of AC /DC power, the discovery of 2, 3 phase power ; Tesla, Edison bickering and fighting over AC and DC. (Edison lost the DC venture. ) and the most special gifted one of all ; Dolivo-Dobrowolsky “Transmission of Power by Rotary-Phase Alternative Currents” The Electrical Engineer (April 3, 1891) p. 336. HER videos, are spot-on for the engineer-to-be. My older brother, was a master engineer. Worked for Weyerhauser in Prince Albert pulp plant, now deceased. …..RIP. Anyway……Be good to all !
Good infomation thanks
no more BRUSHLESS pleaseeeeeeeeeeeeeeeee
1:38 i don't think the number of poles effect the torque
Most videos dont explain this in regenerative braking. They just explain it using a regular asynchronous motor which isnt possible in regenerative mode. At least in my view
I wonder if i have 2 12v motors on 2 light up deorations why one light turns faster than the other? last time i used them they were both the same working great, i packed them away and took them out and now 1 spins faster than the other and makes a bit of noise? i dont have anyone to ask so if you have any ideas please lmk.
Cool!
Great 👍🏻
Hello, what software did you use for the design of the animation?
I will benefit if the videos are converted into Bengali language
Very high quality science video! Anhui Mingteng Permanent-Magnetic Machinery & Electrical Equipment Co.,Ltd specialised in IE5 industry PMSM design development and manufacturing. High overload capacity, High starting torque, High power factor and efficiency,Best choice for production.
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Nepal
Super explanation
great video tutorial
🤯 wow !!!! Amazing thank you . Who ever made this
Brilliant. Finally I get it. Will be watching more of your videos.
Best motor, when magnet one'e limited by its force, magnetic free motor 100% can run on full speed
My scooter company states it has AC- IPM motor, does this mean it has IPMSM motor?
العلم ركب فوق الجنون
💐🇮🇱🌄🇯🇴💐🎷
jesus… way better explanation than any college level reference books
Thx
I just want to learn how to use for halloween …. and understand the motor..
Please Make a sincronas motor hunting effect video
Very handy explainer, thank you!
useful 👍