E+L motor Germany E+L model E+L price

E+L motor is a single-phase AC commutator motor, suitable for single-phase power supply applications requiring speed regulation and reversal of rotation direction. The stator winding is powered by a single-phase source, and the rotor is an armature winding with a commutator short-circuited via brushes. The brushes can be moved to any position relative to the stator winding as required. By shifting this position, the rotor's direction of rotation, mechanical characteristics, and operating speed can be changed. When the brushes deviate counterclockwise from the geometric neutral axis, the rotor rotates clockwise; when the brushes deviate clockwise from the geometric neutral axis, the rotor rotates counterclockwise.

E+L motor mechanical characteristics

High motor efficiency: By embedding permanent magnet materials in the rotor, the rotor and stator magnetic fields operate synchronously during normal operation. There is no induced current in the rotor windings, eliminating rotor resistance and hysteresis losses, which improves motor efficiency. 2. High power factor: Since there is no induction current excitation in the PMSM rotor, the stator windings present a resistive load, and the motor's power factor is close to 1, reducing stator current and improving motor efficiency. Meanwhile, the improved power factor enhances the grid quality factor, reduces losses in transmission and distribution lines, allows for reduced transmission and distribution capacity, and saves on grid investment. 3. High starting torque: In equipment requiring high starting torque (such as oilfield pumping motors), lower-capacity permanent magnet motors can replace higher-capacity Y series motors. If a 37kW permanent magnet synchronous motor replaces a 45kW to 55kW Y series motor, it effectively addresses the "over-sized motor driving small load" phenomenon, saving on equipment investment costs and improving system operational efficiency. 4. Good performance indicators: When Y series motors operate at 60% load, efficiency drops by 15%, power factor drops by 30%, and performance indicators drop by 40%; whereas the efficiency and power factor of PMSM decrease only slightly. Even when the motor is under only 20% load, its performance indicators remain above 80% of full-load values. 5. Low temperature rise: There are no resistance losses in the rotor windings, and almost no reactive current in the stator windings, resulting in low motor temperature rise. 6. Small size, light weight, and less material consumption: For the same capacity, the volume, weight, and material usage of permanent magnet synchronous motors can be reduced by approximately 30%. 7. Allows for large air gaps, facilitating the construction of new magnetic circuits. 8. Low armature reaction and strong overload resistance.

E+L motor common issues

Motor issues: 1. Abnormal operation of the main drive motor, bearing overheating. Abnormal operation of the main drive motor; slip motors vibrate severely during operation, causing bearing overheating. Disassemble the clutch armature and pole rotor to check if the motor bearings are severely lacking lubricating grease, causing severe bearing wear and degraded motor performance. In this case, replace the damaged bearings and add sufficient lubricating grease. Under normal conditions, all components of this mechanism should be cleaned and lubricated to ensure the normal operation of the main drive motor; 2. Periodic decrease in host speed. This situation is mostly caused by mechanical faults. Speed-regulating motors have many rubber rollers, each supported by bearings. If a bearing at either end of any rubber roller fails, it may cause periodic dips in the host speed. In severe cases, the host movement will be more erratic, and the bearings should be replaced immediately. Additionally, attention should be paid to the working condition of the bearings and lubrication points of all host rollers (including plate, blanket, and impression cylinders). Faults here will also affect printing speed.

E+L motor advantages

The motor can be integrally mounted on the wheel axle, forming an integrated direct-drive system, where each wheel axle is a drive unit, eliminating the need for a gearbox. Advantages of permanent magnet synchronous motors: High power efficiency and high power factor of the permanent magnet synchronous motor itself; low heat generation, resulting in a simple, compact, and quiet motor cooling system; the system adopts a fully enclosed structure with no transmission gear wear, no transmission gear noise, and is free from lubricating oil and maintenance; permanent magnet synchronous motors allow high overload currents, significantly improving reliability; the entire transmission system is lightweight, with lower unsprung weight than traditional wheel axle transmissions, and higher power per unit weight; due to the absence of a gearbox, the bogie system can be designed freely, such as flexible bogies or single-axle bogies, greatly improving train dynamic performance. Due to the use of permanent magnet poles, especially rare earth permanent magnets (such as NdFeB), which have high magnetic energy product and can achieve high air gap flux density, the motor is smaller and lighter for the same capacity. The rotor has no copper or iron losses, nor friction losses from slip rings and brushes, resulting in high operational efficiency. Low moment of inertia, high allowable pulse torque, high acceleration, good dynamic performance, compact structure, and reliable operation.

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