Wound Rotor Induction Motor Overview

Подписаться 14 тыс.

Просмотров 16 тыс.

50% 1

This video covers the basic construction and operation of a wound rotor induction motor. We will also cover the advantages, disadvantages, and speed control.
Here is some related videos:
Slip and Slip Speed: • Slip Speed and Slip in...
NEMA Rotor Designs: • NEMA Rotor Designs
EZfIX Chart: • EZfIX Chart for Rotor ...
Rotor Parameter Formulas: • Rotor Parameters Formu...
Torque Curves: • Torque Curve Chart for...
More Rotor Parameter Relationships: • Rotor Parameter Relati...
How a Motor Generate Torque: • How a motor rotor gene...
3-Phase Induction Motors Playlist: • 3-Phase Motors
#WRIM #Rotor

Опубликовано:

15 фев 2021

Ссылка:

Скачать:

Готовим ссылку...

Добавить в:

Мой плейлист

Посмотреть позже

Комментарии : 43

@salfred8252 3 месяца назад

Great video. 100 times more comprehensive than my teachers. Thank you. You've earned a well-deserved subscriber here.

@lespaul59burst 3 года назад

The best basic explanation of a wound rotor motor I have seen so far, thanks Zack!

@ZackHartle 3 года назад

That's great to hear. Thanks for watching!

@rafal6016 2 года назад

This is amazing, much easier to learn from these videos than actual classes.

@ZackHartle 2 года назад

Glad you think so!

@daddsf27 2 года назад

thank you Mr. Zack

@MissionFitnessCTC Год назад

Good video. Thanks

@VARUN93383 Год назад

thanks for your video.

@Sambulondlela 2 года назад

Great work 👏🏾

@ZackHartle 2 года назад

Thank you 🙌

@sd5722 3 года назад

Good work.appreciated

@ZackHartle 3 года назад

Thanks a lot

@stephencarmichael667 2 года назад

Thank you Zack! Very helpful indeed. Have a great day as well!

@ZackHartle 2 года назад

Happy to help!

@stephencarmichael667 2 года назад

@@ZackHartle Thanks in part to you I aced my test on motors! Appreciated.

@ZackHartle 2 года назад

@@stephencarmichael667 Glad to hear it!

@kishankhavas1993 4 месяца назад

awesome

@mohammadabdulfattah1867 Год назад

Thank you mr. Zack ❤

@ZackHartle 11 месяцев назад

My pleasure!

@MenzelMotors 3 года назад

nice

@ashwingopal9929 2 года назад

Very beautifully explain

@ZackHartle 2 года назад

Thank you so much 🙂

@qzorn4440 2 года назад

very nice info., on a 1000 hp 2300vac motor is there a formula on setting the timing resistance 5-steps on the 3 phase resistors grid to the bypass grid in run mode? 🤔thanks🙂

@tomondulich8113 Год назад

thanks for the video. if you were to replace a drum sw that controls the wrm with a pendant control operating a vfd to supply power to stator what would be the best setting of the resistors for the rotor? high,med or low redistance?

@jaydee4367 Год назад

Inductive reactance in the rotor is high when first started (due to the high slip speed) which is exactly why we want high resistance also for good starting torque. Resistance in a SCIM can't be changed to match inductance which is the entire advantage of a wound-rotor.

@sham1234567891 2 года назад

Great stuff Zack! Is it possible to fit a wound rotor in place of a squirrel cage rotor in an induction motor? Thanks for a quick answer.

@ZackHartle 2 года назад

In theory it would work, if it fit perfectly. Just may not be quite as efficient.

@Heybrother69 6 месяцев назад

Hi I have a question, do the leads coming from the slip rings to the resistors, they MUST be connected all 3 in some way for the motor to turn correct? Or are there some models where only two can be connected, none connected, for them to turn/work when energized?

@etiennewondju4593 3 года назад

Thanks Zack. I had hard time interlocking Washroom fan and furnace in the basement. Please could you provide me and wiring diagram for that. The problem is common for legal basement. Thank you

@ZackHartle 3 года назад

There's so many different options depending on the exact situation. I would recommend finding an electrician in your area to come take a look.

@josephguida5432 3 года назад

The waste water treatment facilities throughout my city use WRIM’s for the main influent sewage pumps. More reliable than VFD’s for that purpose because of the severe and corrosive environment. They experimented with a VFD motor and it wouldn’t stop crapping out (no pun intended) so the WRIM’s proved to be worth the extra maintenance. I have a question if you don’t mind. If I connect 3-single phase transformers for 3-phase (parallel) operation, do I simply divide the load by 3 to get the KVA rating of each transformer? Of course the transformers should only be loaded to 80%, I’m assuming.

@ZackHartle 3 года назад

Very cool about the use of WRIMs still. Yep basically, although you wouldn't connect them directly in parallel

@josephguida5432 3 года назад

@@ZackHartle Understood, parallel was the wrong choice words.Thanks for your reply. Your parallel RLC video got me hooked on the voltage and current triangles. They dont allow us to use socahtoa functions on the calculator for the NYC City Electricians exam, but because of that video I’m able to do those parallel RLC’s with the combination (Z) coils now. First time I took that test back in 2006, they hit me with a 3 part question based on a parallel RLC circuit just about the same as the one in your highly viewed video. They didn’t even show us a parallel RLC in the prep course, let alone one with an RL coil. When I first saw that video of yours it was a big “Aha!” moment. I called all my electrician friends and told them to check out that video just to prove I wasn’t lying about that test question. Still got an 86.25 on it but if I had your help back then, I’m sure I could of hit a higher mark.

@jimbob5891 Год назад

I recently discovered a very old single phase 115/230 1/2 horse WRIM in an attic. The weird bit here is that it uses a commutator like a dc motor instead of single pole slip rings, and there is no provision for external resistors. The brushes simply connect some points on the commutator to other points on the commutator. The motor is reversed by rotating the brush assembly relative to the housing. So given that there is no resistor aided start going on here, why does this motor exist? What is the advantage of this over a regular squirrel cage motor? Edit: Looks like this is a repulsion motor. They did this to achieve high starting torque before the use of start capacitors was practical.