Will try😊

Thanks Swaraj for the boost😊

Hi, I had a glimpse of a question by you about motor star connection? Somehow it disappeared. If relevant please post again. And BTW, if not a member of the group please join: www.linkedin.com/groups/13606756 Best

Thanks for comment. The C component does not affect the basic operation (small enough) but can cause ringing problems and losses. Good point.

Thanks

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Will try. Thanks for comment.

Thanks

@@sambenyaakov I made this driver without a micrcontroller and it works pretty well ukposts.info/have/v-deo/a5l-paGkiIOCtY0.html However, it requires a lot of manual adjustments to operate it. I would like to automate the adjustments without a microcontroller. I understand in principal how a closed loop works with a microcontroller, but I have no idea how to automate these adjustments without a MC. Where and how would I apply feedback with discrete components?

Motor design is not really my "cup of tea"

Thanks for input. Yes, Ilso think the reason is to smooth the torque

It is the way around. What matters is the actual physical 3 phase vecror space while the d-q is just a mathematical manipulation limited to balanced systems and no higher harmonics.

@@sambenyaakov Thanks a lot!

Thanks

Prof. I.m studying a mechanic but highly interesting in Electromagnetic/motors and I really in need for a professional advice about an issue of the Flux...May I get your business email or if kindly drop me a line on Seagull7@live.co.uk And I.l get back to you. Thanks in advance.

Thanks

A sinusoidal drive is the ultimate solution.

You can drive a BLDC motor by a sinusoidal waveform, not much different from an induction machine.

@@sambenyaakov Thank you for your reply. . I am not sure what wires from my breaker box goes to the three wires in the above motor. With its resistance of the coils wires being high, I would think 240 V supply, having two wires and the motor with 3 wires, would I need to use a capacitor with certain uF specification? I don't have 3 phase supply at the house. This is the motor but the spec on it with regard to voltage supply is for its control board which I don't think work any more. On the motor hook up as you can see has the 3 wires for the motor and the hall 5 wires. www.h-mac.com/amana-0131p00029S.html Here is another motor I have. I am not sure if you have seen. These motors are in washing machines, the are typically a foot in diameter, with the magnet rotor being on the outside.. BLDC, three wires and hall sensor. The resistance between their 3 coil wires are 5 -6 ohms big difference with the above motor. What voltages to I supply to each three wires as I don't have a 3 phase supply. ukposts.info?search_query=lg+bldc+motor Thanks in advance for any follow up.

Thanks

I am afraid I don't follow the question.

I try to test the motorcontrollers DRV835x but I dont want to use the motor, i will replace the motor with his equivalant. So i will generate the -Load(with my specific Resistor and Coil Value)(generate load stepwise) -back emf with a variable trapezium voltage generator -hall sensor simulation to simulate the hall sensors so actually the motorcontrollers thinks there is a turning motor but there is not. - this is done due to functional testing of the motorcontroller currents and see the commutation are going to the right direction. So my question is I want to understand better the presense of back emf in the application, do I really need to realise it. Thankyou very much.

Thanks

Sorry, I am not familiar with this circuitry.

@@sambenyaakov no worries. thank you for responding. the pcb label K (in my case) is an additional/optional function for thermal sensor. /bklyn 👑

(torque*w)/V*I

This involved. Many papers on that. If you have access, search IEEExplore

@@sambenyaakov Thank you. I will search.

Thanks😊

Thanks

🙏😊

No sure I follow your question

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The EMF is the voltage expected at full RPM

Sir, Could also provide the EMF voltage range which we can consider for High Speed and Low Speed (High torque Condition) for Vin condition

@@pavamanp6873 If a motor is designed for a certain bus voltage level that is max AC voltage, then to get the specified RPM you need full AC voltage (M=1) which is approximately the back EMF (all approximate neglecting voltage drops and phase shifts)

Thanks for note. Will try

Thanks for sharing

👍😊

Thanks