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Electric vehicles => Electric cars => Topic started by: gverlab on June 24, 2016, 09:37:03 PM

Title: Economic pulse motor with reduced back EMF
Post by: gverlab on June 24, 2016, 09:37:03 PM
Ukrainian public research laboratory of alternative energy GverLab presents our very perspective energy saving green project «Pulse motor with reduced reverse EMF and  with a modular electronic control system» .
Pulse motor with reduced reverse EMF refers to irreversible electric machines of direct and single-phase alternating current is applied in all industries and transport, the proposed motors have a higher efficiency and a number of advantages over the known electric engineі. Motor works on the principle of running pulsed magnetic field stator, has a special stator winding, which is wound multicore heavy gauge wire , designed for low voltage (12-72 V) , with a standard squirrel cage induction motor. Generation of pulsed signals and switching of running pulsed magnetic field produces special modular control system for high-power transistors, with a recovery system. Our pulse motor with reduced back EMF saves  50-60% of electricity. The power of current experimental prototype motor is 7.5 kW, 1,500 rpm. Perspectives : in 2016 planned to get a patent and  build, test a series of pulse motors  5, 10, 15, 20 kW with different modular control systems.
Application: for electric vehicles, industrial fans, for replacing standard motors in machines, production lines.
The video shows the work of pulse motor - prototype 7.5 kW, the most energy efficient engine operation is reached under partial load at 300-500 rpm, a voltage - approximately 48 V, a current - about 5 A, the consumed electric power  - about 250 watts , (see fragment1 of video - from 20 to 30 seconds and  fragment2 of video - from 46 to 53 seconds).
https://www.youtube.com/watch?v=s0WtM7DPHfA
Our motto - «Safe our planet - stop global warming!»
More -gver.tk
Title: Re: Economic pulse motor with reduced back EMF
Post by: TinselKoala on June 25, 2016, 07:04:50 AM
In your video there appears to be NO LOAD on your motor at all. No load, other than bearing friction. The motor's output shaft is just hanging there in the breeze. Put some kind of load on the motor, have it doing some work, and then let's see what you get. At present you are inputting 250 Watts of power and getting _zero_ useful work out, which isn't very efficient at all. The motor's nameplate rating of 7.5 kW or whatever, is meaningless unless it is driving a correspondingly heavy load.

And you've posted exactly the same thing in two threads.
Title: Re: Economic pulse motor with reduced back EMF
Post by: tinman on June 25, 2016, 08:46:05 AM
In your video there appears to be NO LOAD on your motor at all. No load, other than bearing friction. The motor's output shaft is just hanging there in the breeze. Put some kind of load on the motor, have it doing some work, and then let's see what you get. At present you are inputting 250 Watts of power and getting _zero_ useful work out, which isn't very efficient at all. The motor's nameplate rating of 7.5 kW or whatever, is meaningless unless it is driving a correspondingly heavy load.

And you've posted exactly the same thing in two threads.

Well there is a fan on the back of the motor--that would represent a small load that increases with RPM. How much would it take to spin that fan at the RPMs shown in the video?--who knows :-\.


Brad
Title: Re: Economic pulse motor with reduced back EMF
Post by: gverlab on June 25, 2016, 10:06:24 AM
To attn Koala & tinman,

Most importantly - our pulse  motor and control system work stable (with a load too) , a temperature of bodies  are normal  . Speaking about load - please look at the video more attenvely - we try to load (more less) of motor by wooden board - it is not correctly, of course, but it demonstrates the main characteristic of the motor - Arrow ammeter shows that this type motor with  a given speed of rotation consumes the same of power - with a load or without a load . For comparison - try do the same experiment with a standard induction motor - you will feel a difference. Anyway the critics and discussions from handyman and practical engineers are welcome.
Regards,
Leon ,
electrical engineer, inventor
www.gver.tk
In attachment pls look at our project number 2 - the presentation of econimic syngas generator-burner 1 MW
Title: Re: Economic pulse motor with reduced back EMF
Post by: TinselKoala on June 25, 2016, 08:08:35 PM
Well there is a fan on the back of the motor--that would represent a small load that increases with RPM. How much would it take to spin that fan at the RPMs shown in the video?--who knows :-\ .


Brad

Probably no more than a few hundred mW... a couple Watts at very most.
Title: Re: Economic pulse motor with reduced back EMF
Post by: TinselKoala on June 25, 2016, 08:17:30 PM
To attn Koala & tinman,

Most importantly - our pulse  motor and control system work stable (with a load too) , a temperature of bodies  are normal  . Speaking about load - please look at the video more attenvely - we try to load (more less) of motor by wooden board - it is not correctly, of course, but it demonstrates the main characteristic of the motor - Arrow ammeter shows that this type motor with  a given speed of rotation consumes the same of power - with a load or without a load . For comparison - try do the same experiment with a standard induction motor - you will feel a difference. Anyway the critics and discussions from handyman and practical engineers are welcome.
Regards,
Leon ,
electrical engineer, inventor
www.gver.tk (http://www.gver.tk)
In attachment pls look at our project number 2 - the presentation of econimic syngas generator-burner 1 MW

Both tinman and I, and hundreds of other pulse motor builders, have PMs that do not require increased input power with load, for any given RPM. This is just the way this kind of pulse motors work.
Nowadays, the most efficient types of motors are typically brushless DC motors, which are driven by a kind of 3-phase pulse-width-modulation driving system. These are the kinds of motors found in electric drone aircraft, where precise speed control, high power-to-weight ratios and maximum electrical efficiencies are very important design considerations.
Title: Re: Economic pulse motor with reduced back EMF
Post by: dieter on June 27, 2016, 07:42:01 AM
Pulsed induction Motor sounds good to me. Selectively pulse it when it's driving the rotor, don't do so when it would brake it.

If Tesla had Mosfets, he would have done so too.

Wish you all the best.
Title: Re: Economic pulse motor with reduced back EMF
Post by: gverlab on June 28, 2016, 06:52:13 PM
Hello,

Today I finished the presentation of our pulse motor, please download from our site - http://www.gver.tk/gver-pulse-motor-presentation.rar . Any reasonable , correct critics, advices, offers  regards our project we are welcome.

Leon
Title: Re: Economic pulse motor with reduced back EMF
Post by: dieter on June 29, 2016, 03:47:49 AM
Just downloaded, thanks. Will study it later.

Don't expect too much attention in this forum. Seems  to be more about group dynamics than thermo dynamics ^^