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FAQ

DC Supply will given to a AC Motor?

No, not unless you have a heavy duty inverter.

Expansive speed control Not able to operate at low speed Are there anymore Disadvantages?

Creates nasty harmonic voltages in the building's power system.

Hi there everyone and merry xmas to all...In certain treadmills, the speed by which the user is running is measured and calculated using a mounted sensor near the rotor of the motor. However I found that some treadmills lack this sensor, and I am seriously wondering how this could be achieved? I know that the more the motor is rotating, the more current it consumes, but I hope to know the formula relating electrical quantity(ies) to the rotation per minute (rpm).Thanks in advance...

quite a lot depends on the motor in question. if you've even seen power company generators, they don't turn very fast, yet they generate millions of watts. your best bet is to get a brushed motor that has permanent magnets, and just test. induction motors won't work. motors with stators that are powered by the current, rather than permanent magnets won't work. and you'll need an ammeter that's appropriate to the current you're generating.

What is the difference between AC variable frequency speed control and DC variable frequency speed regulation?

AC variable frequency speed regulation, change the number of poles of the motor, characterized by fixed gear, that is, high and lowDC speed regulation is the first to AC shaping into DC, and then through the controllable inverter back to AC, characterized by speed range, but because of plastic, inverter will have a conversion efficiency problem.For example, AC speed range is 100%, 70%, 40% speed, 3 gear,DC speed regulation range of 30%~100% can be stepless speed regulationThen in 100%, 70%, 40% the third near operation, energy efficiency than AC DC, but when the compressor only needs 55% when operation meet the requirements, at this time also with the speed of 70% AC, DC inverter operation, energy consumption will not pay the small flow

Everything is wired correctly, can hear the relay kick on when power is on but motor will not start

a three section motor has 3 warm leads. this is to declare that the peaks interior the alternating modern are closer together so as that the motor has much less time between each height, as a result runs smoother and greater effectively. a three section motor will generally final longer than a single section. I even have interior the previous used the two forms of section converters - static and rotary. The static converters are a series of capacitors which make up the 0.33 leg while linked to a 220 circuit. those are no longer one hundred% reliable. I saved the electrician's telephone huge style attainable. A rotary converter is, as I comprehend it, a generator which generates the 0.33 section for the motor. those in my adventure are solid and if super adequate, can function better than one motor. i'm neither an electrician nor an engineer yet have had adventure with the two forms of section converters.

How can a DC motor be changed into a three-phase AC motor with good performance?

If the direct replacement is used, the mechanical characteristics and the service life of the motor will be directly affected. But as a technical transformation project, there are also successful cases. Priority is given to the output torque to meet the mechanical requirements, and also to match the power.

I've read that it's because they don't require commutators but i couldn't understand that part .. can someone please explain in some details or offer me a useful link

It has good power factor at high load thats why..IT has 0.8 lag p.f at full load

my friend tells me its really bad for your car or the ac motor or something, is this true?

No, it's bad to sit in your driveway with the AC on. Windows have no affect on that, except it's really hard to cool off when the cold air is rolling out the windows. AC compressors put a lot of strain on an idling motor. If you are sitting still, you have no air circulating through the radiator to cool the engine. That's probably what your friend is talking about. Traffic stops, drive thrus shouldn't be an issue. It is a good habit to always monitor your temperature guage as well as oil guage when you are operating a vehicle. If you are sitting still with the AC on and the guage starts to go up, shut off the AC and roll down the windows. The temperature will start to drop on the gauge.