The rare earth permanent magnetic motor save the electric energy by reduce various loss by itself.
Three phase rare earth permanent magnetic motor is a type of synchronous motor,
it can be started by asynchronous or variable frequency mode, with no slip S,
no Fe, Cu loss of rotor principal wave ( Pfe2=0, Pcu2=0). The rotor is excited by
permanent magnetic material, so there is no exciting current, and the Power Factor
is very high, the reactive current is reduced, the current and the Cu loss of the stator
is reduced at the same time, so the efficiency is increased.
In a word, the rare earth permanent magnetic motor save the electric energy by reduce
various loss by itself.
Power Factor :
The BXYT 7.5KW rare earth permanent magnetic motor is a specific motor for the
Two-For-One twister. The PF is almost the limit vale 1.0 , the curve of PF
and efficiency is high and plain.
Motor Type | PF (Full load) | PF(20% load) |
3 phase asynchronous motor Y2-132M-4 7.5Kw | 0.863 | 0.465 |
Rare earth permanent magnetic motor BYT132M-4 7.5Kw | 0.986 | 0.967 |
The current of the stator is reduced clearly and the data of the actual
measurement:
Motor Type | Asynchronous Motor 7.5KW | Permanent Magnetic Motor 7.5KW | Reduce of Stator Current | |
Absolute Value(A) | Rate (%) | |||
Stator Current | 9.277 | 6.321 | 2.956 | 31.86 |
Efficiency
1.The efficiency curve of the asynchronous motor is declining fast in 60% load,
and the efficiency of the light load is very low. The efficiency curve of the rare
earth permanent magnetic motor is in high efficiency area in 20%~120%
rated load.
2.The efficiency of the BXYT 7.5KW rare earth permanent magnetic motor is
94.1% in actual measurement.
Motor Power | US Motor Efficiency Standard | Europe motor Efficiency Standard | IEC60034-30 Standard | China GB Standard | BXYT rare earth permanent magnetic motor efficiency | ||||
hp | kw | EPACT (NEMA MGI) (1997.10.24) | Premium Eff (2007.10) | IE 2 | IE3 | 2 grade | 1 grade | ||
7.5 | 5.5 | 89.5 | 91.7 | 89.2 | 88.2 | 90.0 | 89.2 | 90.7 | 93.55 |
10 | 7.5 | 89.5 | 91.7 | 90.1 | 89.1 | 90.8 | 90.1 | 91.5 | 94.10 |
The decline of the stator current can:
1, Reduce the motor heat
2, Increase the capacity of the power cable
3, Reduce the power consumption of the air conditioner in the factory
Energy-saving Rare Earth Permanent Magnetic Motor
