Electric Motor as Generator

[nucleus]

50v ang output pag walang regulator? kung tatanggalin ba ang regulator ay pwede na sa low rpm ang car alternator para magamit sa windmill?

pag nirekta yung output sa field/rotor yes tataas ang output dahil unregulated, pwede naman lagyan ng regulator at magagamit parin sa low rpm

[iyo karpo]

50v ang output pag walang regulator? kung tatanggalin ba ang regulator ay pwede na sa low rpm ang car alternator para magamit sa windmill?

puede cguro kung mataas ang output voltage at ung rotor flux dapat saturated. kahit low rpm basta mataas ang flux density ng rotor niya at maraming conductors ang stator.

[nucleus]

puede cguro kung mataas ang output voltage at ung rotor flux dapat saturated. kahit low rpm basta mataas ang flux density ng rotor niya at maraming conductors ang stator.

kahit mababa (pang 12V) pag nirekta mo yung output sa rotor/field aabot ng 50V ang output kapag sa tamang rpm, kapag binagalan baba lang ng mga 25V~30V, pero unregulated ang output nun

[jamz]

kahit mababa (pang 12V) pag nirekta mo yung output sa rotor/field aabot ng 50V ang output kapag sa tamang rpm, kapag binagalan baba lang ng mga 25V~30V, pero unregulated ang output nun

yung mga windmill ay hindi naman talaga regulated. depende sa lakas ng hangin ay tumataas din ang voltage nito. 

[nucleus]

yung mga windmill ay hindi naman talaga regulated. depende sa lakas ng hangin ay tumataas din ang voltage nito. 

yup ginagamitan pa ng charge controllers na ang laman ay buck-boost regulator

[iyo karpo]

yup ginagamitan pa ng charge controllers na ang laman ay buck-boost regulator

ano ba ang difference sa buck-boost regulator vs. buck-boost transformer?

[nucleus]

ano ba ang difference sa buck-boost regulator vs. buck-boost transformer?

ang buck at boost ay dalawang topology ng Switched Mode Power Supply pwedeng gamitin ito sa DC input

yung buck boost transformer kadalasan autotype transformer lang katulad ng nasa AVR ng computers/aircon, sa AC lang ito nagagamit

[iyo karpo]

The motor of the elevator I'm selling functions as generator when the elevator is descending from higher floors. The output power is then used to charge the VFD's battery bank.

Is there a buck-boost regulator energizing this motor functioning as generator?

[nucleus]

The motor of the elevator I'm selling functions as generator when the elevator is descending from higher floors. The output power is then used to charge the VFD's battery bank.

Is there a buck-boost regulator energizing this motor functioning as generator?

wala, ginagamit lang yung buck-boost regulator sa mga unstable source tulad ng windmills para makakuha ng regulated output dahil hindi fixed yung output depende sa lakas ng hangin, pag mabagal ang ikot mababa ang output voltage kaya kailangan iboost yung voltage para makacharge, pag mabilis naman ang ikot mataas ang output voltage kaya kailangan ibaba yung voltage para di maovercharge yung battery

[vox]

may nabasa ako sa internet yung alternator ng sasakyan nga, yung rotor lagyan mo pa ng dalawang magnet(magnet ng speaker) para masmataas output...

GINAWA KONA ITO KAPATID PALPAK ANG SPEAKER MAGNET MAJHINA,,NEODIUM BAKA OK PA... kung may nakagawa na ng ganito na umaandar na, pa share naman...

kung alternator ng car ang gamitin, as is,  kaylangan ng batery para may EXCITER, un ung gumagawa ngmagneto para sa paggawa ng kuryente,  sa nga kaibigan natin na di pa kabisado ito........

[SexyPaint]

meron po ba nagbebenta ng neodymium magnet dito? kailangan ko kasi sa bedini ko, yung magnet ng hdd lang ginamit ko neodymium din kasu yung ship e iba iba hehehhe pero gumagana...

[???]

Check mo sa egizmo sis parang meron sila, o yung strong earth magnet yun.

[jamz]

maliit ung benebenta sa e-gizmo, u can create a small generator. pero check the kind of magnet, mas maganda kung disc magnet yun na N sa isang face na di tulad ng magnet na rectangular na meron N-S sa isang face (magkabilang dulo), espcially pang bedini.  kung gusto mung malakas na magnet, pagpatungin mo ung mga magnet ng egizmo na maliit lang. bale 4 na pirasa per set, or double mo mga 8 pcs, ok na ito. nasubukan ko na.

[SexyPaint]

natest ko narin yung bedini magnet lang problem ko, pwede mo icharge ung 220 volts na cap, yung 2 bulb napapailaw ko yung mga sinaunang bumbilya (220vac) using 6volts 3 amp, gusto ko sana e yung susuplyan niya yung sarili niya without using any battery....meron ako napanood sa utube na ganun e, pero sa ngayun di ko na natutuloy, pagud ksi galing sa work, gabi na kung umiwi...

[drin20]

natest ko narin yung bedini magnet lang problem ko, pwede mo icharge ung 220 volts na cap, yung 2 bulb napapailaw ko yung mga sinaunang bumbilya (220vac) using 6volts 3 amp, gusto ko sana e yung susuplyan niya yung sarili niya without using any battery....meron ako napanood sa utube na ganun e, pero sa ngayun di ko na natutuloy, pagud ksi galing sa work, gabi na kung umiwi...

imposible ito. it defies the first law of thermodynamics

[j a y k e z]

nabohay mu master hehehe

[p®otocol]

madaming bumubuhay ng thread ngaun sis hehe napapansin ko lang dami siguro bago members

[Techradactyl]

well it doesn't stop people from trying thermodynamics
I've tried it and fail lol

[SexyPaint]

hehehhe mabuhay ang pinoy.............

[bravokilo]

Hello mga kapatid: Eto mga comments ko after reading the previous posts: Jamz, to get a higher voltage, make a replica of the windmill and series the output. This is one neat trick instead of trying to improve an existing generator. The car alt is out for the moment. thre is a kit in the US to modi a car alt by replacing the rotor with PM. I can actually be done here. Remove the rotor and repalce it with hardwood. Inbbed magnets. I am putting together ordinary PM magnet motor from cars like the one for the wiper or the AC blower. Get the center hub of electric fan alum blade. Steel yung gitna. Insert sa motor. Parejo ang shaft size. Screw in PVC blades...... See hat we can get in the locality. Kung mababa, build two and series. Kung Ok ang V but we want more amps, parallel. On a typical third floor deck, put many small windgens and you can get more V or more A by series or parallel. problem with this motors is that they are brushed type. But who cares, you may get 2 years from it without replacement. if you want to make your own, get the two magnets, inbbed it in a wooden "armature" and make filed coils. matrabajo. Stepper motors are better since alternator sila, no brushes too, the magnets spin. Pero hard to find.

Remember to consider the watts and not the V alone. you can up the V in the same size gen but the A will suffer anyway and you wil still get the same watts.

About regulation:

     In the car alt, the rotor has a coil called the field coil. The fixed coils are called the stator. The voltage regulator controls the current to the field coil. Kapag sobra na ang V(13.8V), the contacts in a mechanical VR will open and sends less current to the field coil. electronic VR does the same thing.(I built many homemade VRs). In windmills, we do not have to regulate this way. Give it full current. Besides , that is what will happen kapag PM na ang gamit. What we don;t want is to overcharge the battery or sends excessive V dahil mag overheat ang mga plates. so how do we do this? Two ways: One is to use a 7812 adjusted to 14.8V by putting diodes in series at the reference pin to ground. heatg sink ma beauty. The other way which is also used in solar panels is to divert excess V to coils which converts excess current to heat. Simple yung una.

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