
Yaskawa Electric Bicycle AC Servo motor 1.5kW 4.77Nm SGMP-15AWYR11 7.5A
Quick Details
Place of Origin:
Japan, Japan
Brand Name:
WTL
Model Number:
SGMP-15AWYR11
Usage:
Electric Bicycle
Certification:
UL
Type:
Servo Motor, Servo Motor
Construction:
Permanent Magnet
Commutation:
Brush
Protect Feature:
Drip-proof
Speed(RPM):
3000RMP
Continuous Current(A):
7.5A
Efficiency:
IE 1
Brand:
WTL
Model:
SGMP-15AWYR11
Power:
750W
Voltage:
200V
Current:
7.5A
Options:
With Brake
Series:
SGMP
SIMILAR PRODUCTS
The supports for the axle can be made of aluminium, so that they
make electrical contact. For example poke holes in a soft drink
cans with a nail as shown. Position the two magnets, north to
south, so that the magnetic field passes through the coil at right
angles to the axles. Tape or glue the magnets onto the wooden
blocks (not shown in the diagram) to keep them at the right height,
then move the blocks to put them in position, rather close to the
coil. Rotate the coil initially so that the magnetic flux through
the coil is zero, as shown in the diagram. Now get a battery, and two wires with crocodile clips. Connect the two terminals of the battery to the two metal supports for the coil and it should turn. Note that this motor has at least one 'dead spot': It often stops at the position where there is no torque on the coil. Don't leave it on too long: it will flatten the battery quickly. The optimum number of turns in the coil depends on the internal resistance of the battery, the quality of the support contacts and the type of wire, so you should experiment with different values. As mentioned above, this is also a generator, but it is a very inefficient one. To make a larger emf, use more turns (you may need to use finer wire and a frame upon which to wind it.) You could use eg an electric drill to turn it quickly, as shown in the sketch above. Use an oscilloscope to look at the emf generated. Is it AC or DC? This motor has no split ring, so why does it work on DC? Simply put, if it were exactly symmetrical, it wouldn't work. However, if the current is slightly less in one half cycle than the other, then the average torque will not be zero and, because it spins reasonably rapidly, the angular momentum acquired during the half cycle with greater current carries it through the half cycle when the torque is in the opposite direction. At least two effects can cause an asymmetry. Even if the wires are perfectly stripped and the wires clean, the contact resistance is unlikely to be exactly equal, even at rest. Also, the rotation itself causes the contact to be intermittent so, if there are longer bounces during one phase, this asymmetry is sufficient. In principle, you could partially strip the wires in such a way that the current would be zero in one half cycle. | An alternative relisation of the simple motor, by James Taylor |
OTHER SUPERIOR PRODUCTS
Yasakawa Motor, Driver SG- | Mitsubishi Motor HC-,HA- |
Westinghouse Modules 1C-,5X- | Emerson VE-,KJ- |
Honeywell TC-,TK- | GE Modules IC - |
Fanuc motor A0- | Yokogawa transmitter EJA- |
Shenzhen Wisdomlong Technology CO.,LTD
Shenzhen Wisdomlong Technology CO.,LTD Mainly engaged in automation parts, PLCS,DCS,sensors, relays,
dirves,encoder, servo drive,soft starter,touch
screen,instrument,process control,electric transmission and factory
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