LAIPPLE KEB motor, German LAIPPLE KEB model, LAIPPLE KEB price

LAIPPLE KEB motor is a single-phase AC commutator motor, suitable for single-phase power supply applications requiring speed control 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 needed. 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.

LAIPPLE KEB motor classification

A shaded-pole single-phase motor is formed by embedding short-circuited copper rings or short-circuited coil groups in part of the stator poles. Shaded-pole single-phase motors include salient-pole and non-salient-pole types. When the stator winding is energized with single-phase AC current, most of the pulsating magnetic flux generated couples directly to the rotor across the air gap, while a small portion of the flux induces flux when passing through the shaded-pole copper ring; this induced flux combines with the original flux and enters the rotor magnetic circuit via the air gap. According to Lenz's law, the induced flux always opposes changes in the original flux and lags behind it in phase. This results in two fluxes that are spatially displaced by a certain angle and have a phase difference, creating a rotating magnetic field with high ellipticity. The rotation direction of a shaded-pole motor is fixed, moving from the unshaded part to the shaded part. It has low power, low starting torque, simple structure, low cost, and easy maintenance. Shaded-pole motors are generally used in small blower motors and fan motors.

LAIPPLE KEB motor structure

The motor body is similar to a permanent magnet synchronous motor (PMSM). The rotor uses permanent magnets, often rare-earth permanent magnet materials, but lacks cage windings and other starting devices. Its stator winding uses AC winding configuration, generally supporting multi-phase (three-phase, four-phase, or five-phase). The rotor consists of permanent magnet steel arranged with a specific number of pole pairs (2P=2, 4, 6...). The design requires obtaining a trapezoidal wave with a top width of 120° in the stator winding; therefore, the winding configuration often adopts full-pitch, concentrated, or near full-pitch, concentrated forms to retain other harmonics in the magnetic flux density. Brushed DC motors rely on mechanical commutators to convert DC current into approximately trapezoidal AC current supplied to the armature winding, while brushless DC motors rely on electronic commutators to input square wave currents sequentially to each phase of the stator armature winding according to a specific phase sequence. When a phase of the brushless DC motor stator winding is energized, the magnetic field generated by that phase current interacts with the magnetic field produced by the rotor permanent magnets to generate torque, driving the rotor to rotate. Position sensors convert the rotor magnet position into electrical signals to control electronic switching circuits, thereby conducting the stator phase windings in a specific order. This ensures that the stator phase current commutes in the correct sequence as the rotor position changes. This allows the electronic magnetic field to change continuously with the rotor's rotation, generating a rotating magnetic field synchronous with the rotor speed, and keeping the spatial angle between the stator magnetic field and the rotor magnetic field at approximately 90°, pushing the rotor to rotate with maximum torque. Since the conduction sequence of the electronic switching circuit is synchronized with the rotor angle, it performs the commutation function of a mechanical commutator, ensuring that the stator and rotor magnetic fields remain basically perpendicular during operation to improve efficiency. Therefore, in terms of basic structure, a brushless DC motor can be considered a "self-synchronous motor system" composed of electronic switch-commutated current, a permanent magnet synchronous motor, and position sensors, which does not lose synchronism during operation. The rotor structure of permanent magnet brushless motors (BLDCM) includes both traditional inner rotor structures and new structural forms such as disc-type, outer rotor, and linear structures.

LAIPPLE KEB motor structure

This motor component consists of an internal gear ring and a matching gear or rotor. The internal gear ring is fixed to the housing. Oil entering from the port pushes the rotor to revolve around a center point. This slowly rotating rotor drives the output via a splined shaft, forming a cycloidal hydraulic motor. After the initial release of this cycloidal motor, decades of evolution led to the formation of another motor concept. This motor installs rollers within the built-in gear ring. Motors with rollers provide higher starting and running torque; the rollers reduce friction, thereby improving efficiency, and the output shaft can produce stable output even at very low speeds. Changing the direction of input and output flow allows the motor to reverse quickly and produce equivalent torque in both directions. Each series of motors offers various displacement options to meet different speed and torque requirements.

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