Speedermotion motor Germany Speedermotion model Speedermotion price

Speedermotion motors are AC motors that generate electromagnetic torque through the interaction between the rotating magnetic field in the air gap and the induced current in the rotor windings, thereby converting electrical energy into mechanical energy. Three-phase asynchronous motors are mainly used as motors to drive various production machinery, such as fans, pumps, compressors, machine tools, light industrial and mining machinery, threshers and crushers in agricultural production, and processing machinery for agricultural and sideline products, etc. They feature simple structure, ease of manufacturing, low cost, reliable operation, durability, high operating efficiency, and suitable operating characteristics.

Speedermotion motor mechanical characteristics

Irreversible demagnetization issue in motors. If designed or used improperly, permanent magnet synchronous motors may experience irreversible demagnetization, also known as loss of magnetism, at excessively high temperatures (for NdFeB permanent magnets) or excessively low temperatures (for ferrite permanent magnets), under the armature reaction caused by impact currents, or during severe mechanical vibration. This leads to a decline in motor performance, or even renders the motor unusable. Therefore, it is necessary to research and develop methods and devices for checking the thermal stability of permanent magnet materials for use by motor manufacturers, and to analyze the demagnetization resistance of various structural types, so that corresponding measures can be adopted during design and manufacturing to ensure that permanent magnet synchronous motors do not lose magnetism. Cost issues. Due to their simple structural process and reduced weight, the total cost of ferrite permanent magnet synchronous motors is generally lower than that of electrically excited motors, leading to their widespread application. Since the current price of rare earth permanent magnets is relatively high, the cost of rare earth permanent magnet motors is generally higher than that of electrically excited motors, which needs to be compensated by their high performance and savings in operating costs. During design, it is necessary to make trade-offs based on performance and price comparisons according to specific usage scenarios and requirements, and to innovate structural processes and optimize design to reduce costs.

Speedermotion motor working principle

Motor principle: When single-phase sinusoidal current passes through the stator winding, the motor generates an alternating magnetic field. The strength and direction of this magnetic field change sinusoidally with time, but its spatial orientation is fixed, so it is also called an alternating pulsating magnetic field. This alternating pulsating magnetic field can be decomposed into two rotating magnetic fields with the same speed but opposite directions of rotation. When the rotor is stationary, these two rotating magnetic fields produce two torques of equal magnitude and opposite direction in the rotor, resulting in a net torque of zero, so the motor cannot rotate. When we use an external force to rotate the motor in a certain direction (e.g., clockwise), the relative motion of cutting magnetic field lines between the rotor and the clockwise rotating magnetic field decreases; the relative motion of cutting magnetic field lines between the rotor and the counter-clockwise rotating magnetic field increases. Thus, the balance is broken, the total electromagnetic torque produced by the rotor is no longer zero, and the rotor begins to rotate in the pushing direction. To enable a single-phase motor to start rotating automatically, we can add a starting winding to the stator. The starting winding is spatially displaced by 90 degrees from the main winding, and a suitable capacitor is connected in series with the starting winding so that the current in it is approximately 90 degrees out of phase with the current in the main winding, known as the phase-splitting principle. In this way, passing two currents with a 90 degree phase difference in time into two windings with a 90 degree phase difference in space will generate a (two-phase) rotating magnetic field in space. Under the action of this rotating magnetic field, the rotor can start automatically. After starting, when the speed rises to a certain level, the starting winding is disconnected by means of a centrifugal switch installed on the rotor or other automatic control devices, and only the main winding works during normal operation. Therefore, the starting winding can be designed for short-time operation. However, in many cases, the starting winding is not disconnected; we call this type of motor a single-phase motor. To change the direction of rotation of this motor, simply swap the connection terminals of the auxiliary winding. Another method for generating a rotating magnetic field in single-phase motors is called the shaded-pole method, also known as the single-phase shaded-pole motor. The stator of this type of motor is made with salient poles, available in two-pole and four-pole configurations. Each pole has small slots cut at 1/3 to 1/4 of the full pole face, dividing the pole into two parts. A short-circuited copper ring is fitted over the smaller part, as if shading this part of the pole, hence the name shaded-pole motor. The single-phase winding is wound over the entire pole, and the coils of each pole are connected in series. During connection, the polarities generated must be arranged sequentially as N, S, N, S. When the stator winding is energized, main magnetic flux is generated in the poles. According to Lenz's law, the main magnetic flux passing through the short-circuited copper ring induces a current in the copper ring that lags in phase by 90 degrees. The magnetic flux generated by this current also lags behind the main magnetic flux in phase, acting equivalently to the starting winding of a capacitor motor, thereby generating a rotating magnetic field that causes the motor to rotate.

Speedermotion motor precautions

Motor precautions: 1. Before disassembly, use compressed air to blow off dust from the motor surface and wipe away surface dirt. 2. Select a location for motor disassembly and clean the site environment. 3. Familiarize yourself with the structural features of the motor and maintenance technical requirements. 4. Prepare the tools (including special tools) and equipment required for disassembly. 5. To further understand defects during motor operation, a check test can be performed before disassembly if conditions permit. For this purpose, run the motor with load and carefully check the temperature, sound, vibration, and other conditions of each part of the motor, and test voltage, current, speed, etc. Then disconnect the load and perform a no-load check test separately to measure no-load current and no-load losses, and keep records. 6. Cut off the power supply, remove the external wiring of the motor, and keep records. 7. Use a megohmmeter with appropriate voltage to test the insulation resistance of the motor. To compare with the insulation resistance value measured during the previous maintenance to judge the trend of insulation changes and the insulation status of the motor, the insulation resistance values measured at different temperatures should be converted to the same temperature, generally converted to 75 °C. 8. Test the absorption ratio K. When the absorption ratio is greater than 1.33, it indicates that the motor insulation has not been dampened or the dampness is not severe. To compare with previous data, the absorption ratio measured at any temperature must also be converted to the same temperature.

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