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Overunity Machines Forum



Using Chas Cambel Flywheel System For 15 Horsepower

Started by thankGod, June 25, 2012, 11:57:43 PM

Previous topic - Next topic

0 Members and 6 Guests are viewing this topic.

TinselKoala

Don't get all confused about pulsing. There are classical "pulse motors" which work by sending a pulse of power to a rotor, with the pulse being timed to the rotor position somehow; these motors are usually not particularly efficient but they are loads of fun to play with. Examples are the Bedini-type motors and the MHOP motor, Steorn's eOrbo, and so on. These motor drivers usually operate at relatively low frequencies with fixed pulse width (duty cycle) and the frequency is directly related to rotor speed.

Then there is PWM, pulse width modulation, which is in fact an efficient way to control the speed and output power of ordinary DC brushed motors, without regard for rotor position. These drivers operate at higher frequencies and with variable duty cycle (pulse width) and the frequency is more or less independent of rotor speed. A variation of the basic PWM scheme, usually with rotor position sensing, is used to drive brushless DC motors, which are often 3-phase and are quite efficient as far as motors and drivers go.

HH

Pulsing brushed dc motor was done before. That's why we have brush-less motors today. They are much more efficient.

HH

off topic post to all :)
Happy new year!
We're aiming the same goal.
The problem is the lack of knowledge and reinventing of the wheel.
Study as much as you can and use your open mind.
We will get freedom someday :)


Liberty

Quote from: HH on January 11, 2014, 05:30:26 PM
Pulsing brushed dc motor was done before. That's why we have brush-less motors today. They are much more efficient.

However, both types of motors are incapable of exceeding 100% efficiency.
Liberty

"Converting Magnetic Force Into Motion"
Liberty Permanent Magnet Motor

HH

Nothing is so far.
What about pulsing brushless motor with high voltage?
Will try that soon.
Cheers