Steimel motor Germany Steimel model Steimel price

Steimel 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 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.

Steimel motor mechanical characteristics

In terms of motor structure, permanent magnets are added to the rotor to provide the operating point for soft magnetic materials, while the stator excitation only needs to provide a changing magnetic field without consuming energy for the magnetic material's operating point. Therefore, this motor has high efficiency, low current, and low heat generation. Due to the presence of permanent magnets, the motor has strong back EMF and good self-damping, resulting in smooth operation, low noise, and low-frequency vibration. To some extent, the variable reluctance stepper motor can be regarded as a low-speed synchronous motor. A four-phase motor can operate in four-phase mode or two-phase mode (bipolar voltage drive must be used), whereas a reactive motor cannot do so. For example, four-phase, eight-step operation (A-AB-B-BC-C-CD-D-DA-A) can fully adopt the two-phase eight-beat operation mode. It is not difficult to find that the conditions are C=, D=. The internal winding of a two-phase motor is completely consistent with that of a four-phase motor. Low-power motors are generally directly connected as two-phase, while higher-power motors often have eight external leads (four-phase) for flexible use and to dynamically change motor characteristics. In this way, they can be used as four-phase motors, or as two-phase motors with windings connected in series or parallel.

Steimel motor performance

Since the 20th century 80s, with the development of integrated circuits, power electronics technology, and AC variable speed drive technology, permanent magnet AC servo drive technology has made remarkable progress. Famous electrical manufacturers in various countries have successively launched their own series of AC servo motors and servo drives, continuously improving and updating them. AC servo systems have become the main development direction of contemporary high-performance servo systems, putting original DC servos at risk of being eliminated. After the 90s, AC servo systems commercialized worldwide adopted fully digital control sinusoidal motor servo drives. The development of AC servo drive devices in the transmission field is changing with each passing day. Compared with DC servo motors, the main advantages of permanent magnet AC servo motors are: 1. No brushes and commutator, so operation is reliable, and maintenance requirements are low. 2. Stator winding heat dissipation is relatively convenient. 3. Low inertia, making it easy to improve system responsiveness. 4. Suitable for high-speed, high-torque operating conditions. 5. Smaller volume and weight for the same power.

Steimel motor control method

Motor Direct Torque Control technology: Direct Torque Control (Direct Self-Control, DSC) constructs flux linkage and electromagnetic torque models on the stationary stator coordinate system, achieving control of electromagnetic torque and stator flux linkage by applying different voltage vectors. The direct torque control method has advantages such as simple algorithms and good torque response, so it is widely used in applications requiring high transient torque response. Due to inherent disadvantages of the control, the direct torque control method has a low control frequency and large torque ripple at low speeds. Therefore, reducing torque ripple at low speeds has become a research hotspot in direct torque control methods. Sun Xiaohui and others achieved good results by optimizing the action time of voltage vectors to reduce torque ripple at low speeds. D.casadei and others applied the direct torque control method to the control of AC induction motors based on discrete space vector modulation technology, reducing torque ripple.

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