Analysis of energy saving in the motor on high efficiency motor
Two important ways of high efficiency and energy saving of motor: frequency conversion speed regulation system and high efficiency motor. To improve efficiency and reduce the loss of variable frequency speed regulation system in the fan and pump load energy-saving principle and features of high efficiency motors are analyzed. Measures and general motors of different characteristics. High efficiency motor is a motor with high efficiency, which should meet the relevant requirements of energy efficiency rating. High efficiency motor will be the new manufacturing process and new materials to the core components, through the motor coil optimization design, effectively reduce the electromagnetic energy, heat energy and mechanical energy loss, improve the operation efficiency, motor heat, long running life.
Reduce loss optimization measures:
As we all know, the loss of the motor is composed of stator copper loss, copper loss, iron loss, mechanical loss and stray loss. The development of efficient and ultra efficient motor must take many measures to reduce the loss, and to reduce the loss and improve the efficiency of electric power.
3.1.1 increased the effective material, reduce the copper consumption and iron loss. For high performance motor, due to the improvement of efficiency index is larger, in order to reduce the core loss and winding loss and need appropriate to reduce the current density and magnetic induction intensity, so the corresponding amplified wire section and increase the core length, frame part enlarged punching outer diameter, and a corresponding increase in the amount of material effectively.
3.1.2 uses a relatively high number of magnetic materials, reduce iron loss. Due to the axial size and high center of the limit, the simple increase in effective materials can not reach a substantial reduction in iron loss, so it is necessary to choose a lower loss of cold-rolled silicon steel sheet, this is particularly important in the medium and high power motor.
3.1.3 reasonable control motor temperature rise. Due to temperature rise in the number of materials and mechanical loss of the material in the case of constant temperature rise by increasing the cooling air quantity and the decrease of temperature rise the rotor copper loss, mechanical loss increased, if the rotor copper loss is greater than mechanical loss, efficiency will be improved, and vice versa. Therefore, reasonable control of temperature rise to the efficiency of high efficiency motor to play a key role.
Measures for reducing the stray loss of 3.1.4.
(1) when the harmonic magnetic field is changed to the surface of the core surface, the eddy current loss and hysteresis loss, which is caused by the surface layer of the core steel sheet, are known as the surface loss. This part of the loss is related to the amplitude and frequency of the harmonic magnetic field, and the amplitude and frequency are affected by the number of slots.
Slot number.
(2) an increase in the air gap of the motor, thereby reducing the amplitude of the stator and rotor harmonic magnetic flux, can effectively reduce the stray loss.
Wannan ye3 series motor is in on the basis of Y2 series motors derived design of high efficiency and energy saving motor, a whole series of motor efficiency is higher than that of the ordinary Y2 series motor efficiency, the utility model has the advantages of beautiful appearance, high efficiency, energy saving, insulation class is f, protection class IP54 or IP55, motor noise and small vibration, reliable operation.
1, suitable for general places and no special requirements of the machinery, such as metal cutting machine tools, pumps, fans, transport machinery, mixer, agricultural machinery, food machinery, etc..
2, the efficiency of the series motor to reach the GB18613-2012 "energy efficiency limit for small and medium motor and energy efficiency rating" 2 energy efficiency standards. Efficiency and YX3 series of the corresponding specifications, the efficiency of the average increase of 2%-3%; with the ordinary Y2 series of the corresponding specifications, the efficiency of an average increase of about 10%; in the range of 50~100% load has a relatively flat efficiency characteristics.
3 mounting dimensions and power levels are fully in line with IEC standard and DIN42673 standard, cooling mode IC411.
4, the level of protection IP55, cast iron shell dust splash, structure optimization, in line with international standards, safety protection.
5, the use of F class insulation, heat resistance, impact resistance, insulation, long life, in bad environment can also be competent.
6, the use of famous brand bearings, silicon steel sheet and enamelled round copper wire, security performance.
7, standardized design, high quality raw materials, advanced processing equipment and perfect quality assurance system, energy-saving effect is remarkable, vibration is small, low noise, stable performance, safe and reliable.
