Double speed three phase asynchronous motor winding classification

Double speed three phase asynchronous motor winding classification A single layer winding: Single-

layer windings is each embedded in the stator slot only buy a coil winding, on the edge of

effectively, so it only total coil motor half of the total number of slots. The advantages of the

single layer winding is winding coil number less process is simple; Utilization of the interlayer not

denied because trough increase; Single layer does not happen and breakdown failure, etc. Drawback is

the winding of the electromagnetic wave shape is not ideal, motor iron ac synchron motor loss and noise are large and starting performance also is a bit poor, so the single layer winding asynchronous motor only commonly used for small capacity. In accordance with the single layer winding coil shape and arranged termination local arrangement is different, can be divided into chain winding, cross chain,

concentric windings and intersection concentric winding winding types, etc. 1 chain chain windings

is by having the same shape and width of single coil components, due to its winding ends each coil

like set up the link of the name. Should pay special attention to single chain winding of the coil

pitch necessary for odd number, otherwise will not be able to arrange the winding arrangement. As

per each phase 2 cross chain winding slot number nine is greater than 2 odd number will not be able

to arrange the chain winding arrangement, at this time will need to use the intersection with single

and double coil winding. 

Three concentric winding in the same group of extremely all coil around the same circle. When each ac synchronous motorphase slot number per level 4 Q is greater than 2 even can adopt the form of cross

concentric winding. The advantages of single-layer concentric winding and cross concentric winding

for winding, is relatively simple, embedding a long use wire end of faults is too much. Now except

for useful in small capacity of 2, 4 pole motor, is now rarely use this winding form. Double

cascading winding Single and double layer composite winding Star connection relationship with the

Angle joint When the star of by change Angle: the original star connection wire diameter total

cross-sectional area divided by 1.732 is equal to the Angle of the wire diameter total cross-

sectional area. The Angle of by change star: when the original Angle joint line diameter when the

total cross-sectional area multiplied by 1.732 is equal to the star connection wire diameter of the

total cross-sectional area. The difference of star connection with nature Angle joint When star

connection line voltage equals 1.732 times the phase voltage, phase current is equal to the line

current. Angle joint when the phase voltage is equal to the line voltage and line current is equal to

the phase current of 1.732 times. With the power of the motor, when the star connection, wire

diameter thick, less number of turns, the Angle joint, fine wire diameter, number of turns. When the

Angle joint sectional area is 0.58 times of star connection. When the Angle joint line diameter when

the total cross-sectional area divided by 0.58 is equal to the star connection wire diameter of the

total cross-sectional area. When the star connection wire diameter total cross-sectional area

multiplied by 0.58 is equal to the Angle of the wire diameter when total cross-sectional area)

cross-section of wire diameter calculation formula: cross-sectional area S = square multiplied by

0.785 is the diameter of the motor internal connection with salient pole and ordinary pole, salient

pole and ordinary pole is determined by the design properties of the www.facebook.com/dongfeng.motor motor can not be changed motor no-load current coefficient calculation.