Jiangsu Elmaer Technology Co.,Ltd
Professional Manufacture Of Brushless Alternator,AC generator
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Permanent magnet synchronous motor over induction asynchronous motor has the following advantages:
(1) permanent magnet synchronous motor structure is simple, light weight, small size, wider range of applications. For example, the induction motor 10Kw weight of 220kg, while the permanent magnet motor is only 92kg, equivalent to 45.8% of the weight of the asynchronous motor.
(2) permanent magnet rotor of permanent magnet synchronous motor without excitation, thus reducing the stator current and stator resistance loss, the motor efficiency.
(3) permanent magnet synchronous motor with low inertia, torque must, fast response, that is, torque / inertia ratio, no rotor losses and heat generation, energy efficiency high.
(4) With the new Nd-Fe-B permanent magnetic materials of large-scale use, making the remainder of the rotor permanent magnet flux density, coercivity, maximum energy product such performance has been greatly improved in improving motor performance while reducing motor volume. With the Nd-Fe-B permanent magnet materials development, the application of permanent magnet synchronous motor will be more extensive.
Three-phase permanent magnet synchronous motor is started eddy current, synchronous operation, to achieve a rare earth permanent magnet of the rotor, so the non-slip, non-electric excitation, no fundamental rotor iron, copper loss. Rotor permanent magnet excitation, no reactive excitation current, power factor, reduce reactive power, stator current sharp decline, the stator copper consumption greatly reduced, efficiency improved significantly.
As the permanent magnet motor pole arc coefficient is greater than the pole arc coefficient of induction motor, when a certain voltage and the stator structure, the synchronous motor, the average magnetic flux density smaller than the induction motor, iron loss is small.
Because of the constant loss of a small permanent magnet motor, induction motor variable loss than low, so that characteristics can be efficient in 20% to 120% rated load range showing high level, energy-saving effect is obvious.
We offer various kinds of permanent magnetic generator from 0.2KW-400KW(vertical and horizontal), please contact us for more detail informations.