ATAS elektromotory motors, German ATAS elektromotory models, ATAS elektromotory prices

ATAS elektromotory motors are electromagnetic devices that convert or transmit electrical energy based on the law of electromagnetic induction. The term broadly refers to all machines capable of converting mechanical energy into electrical energy and electrical energy into mechanical energy. The motor housing has an ingress protection rating of IP44, and the cooling method is IC0141 totally enclosed fan-cooled (TEFC). Ambient air temperature varies with the seasons but does not exceed 15℃ to 40℃. Altitude does not exceed 1000m. Rated frequency, rated voltage, insulation class, and duty cycle are specified on the nameplate. When the supply voltage varies within ±0.05 of the rated value (with frequency at the rated value), the motor's output power remains at the rated value.

ATAS elektromotory motor operating principle

The motor uses capacitor phase shifting to separate single-phase AC power into another phase with a 90-degree phase difference. These two phases of AC power are fed into two or four sets of motor coil windings, creating a rotating magnetic field inside the motor. This rotating magnetic field induces current in the rotor, and the magnetic field generated by this induced current opposes the rotating magnetic field, causing the rotor to be pushed and pulled into rotation. Since the rotor must cut magnetic flux lines to generate induced current, the rotor speed must be lower than the synchronous speed of the rotating magnetic field; hence, it is called an asynchronous motor. Three-phase asynchronous motors do not require capacitor phase shifting, as they inherently have three-phase AC power with a 120-degree phase difference, resulting in a more uniform rotating magnetic field and higher efficiency. In permanent magnet synchronous AC motors, the magnetic field is generated by permanent magnets, and the rotor coils are powered via brushes. The speed is an integer multiple (or fraction) of the AC frequency (depending on the number of rotor coil windings), hence the term synchronous motor. Motors where rotor coils are powered via brushes and the stator generates a rotating magnetic field through coil windings are classified as series-wound or shunt-wound motors based on the series or parallel connection between the rotor and stator coils. A DC motor consists mainly of a stator and a rotor. The stator has magnetic poles (wound or permanent magnet), and the rotor has windings. When energized, a magnetic field (poles) forms on the rotor. There is an angle between the magnetic poles of the stator and rotor. Under the mutual attraction between the stator and rotor magnetic fields (between the N pole and S pole), the motor rotates. Changing the position of the brushes changes the direction of the angle between the stator and rotor magnetic poles (assuming the stator pole is the starting side of the angle, the rotor pole is the other side, and the direction from the rotor pole to the stator pole defines the motor's rotation direction), thereby changing the motor's direction of rotation.

ATAS elektromotory motor performance

Motor performance is closely related to its excitation method. Typically, there are 4 types of DC motor excitation methods: separately excited DC motor, shunt-excited DC motor, series-excited DC motor, and compound-excited DC motor. Understand the characteristics of these 4 methods: 1. Separately excited DC motor: The field winding has no electrical connection to the armature; the field circuit is supplied by a separate DC source. Therefore, the field current is unaffected by the armature terminal voltage or armature current. 2. Shunt-excited DC motor: The circuit is connected in parallel for current division. The voltage across the shunt field winding is the same as the voltage across the armature. However, the field winding is made of thin wire with many turns, resulting in high resistance, which keeps the field current low. 3. Series-excited DC motor: The current is connected in series for voltage division. The field winding is in series with the armature, so the magnetic field in this motor changes significantly with changes in armature current. To prevent excessive losses and voltage drop in the field winding, its resistance should be as low as possible. Therefore, series-excited DC motors typically use thicker wire with fewer turns. 4. Compound-excited DC motor: The motor's magnetic flux is generated by the excitation currents in two windings.

ATAS elektromotory motor advantages

The motor's magnetic field is generated by permanent magnets, thereby avoiding excitation losses (i.e., copper losses) caused by generating the magnetic field through excitation current. With no current in the rotor, the motor temperature rise is significantly reduced, being more than 20K lower under the same load conditions. Permanent magnet synchronous motors have a high power factor that is independent of the number of motor poles. At full load, the power factor approaches 1, resulting in lower motor current compared to asynchronous motors, which in turn leads to lower stator copper losses and higher efficiency. In contrast, the power factor of asynchronous motors decreases as the number of poles increases. Furthermore, due to the high power factor of permanent magnet synchronous motors, the capacity of the associated power supply (transformer) can theoretically be reduced, allowing for downsizing of associated switchgear and cable specifications. Permanent magnet synchronous motors also offer advantages such as high starting torque, short starting time, and high overload capability. This allows for a reduction in the installed capacity of the drive motor based on the actual shaft power, saving energy and reducing fixed asset investment. These motors are easy to control, maintain constant speed unaffected by load or voltage fluctuations (depending only on frequency), and operate smoothly and reliably. Due to strict speed synchronization and good dynamic response, they are well-suited for variable frequency control. The mounting dimensions of permanent magnet synchronous motors comply with IEC standards, allowing direct replacement of three-phase asynchronous motors. Protection ratings can achieve IP54 and IP55, and some manufacturers also produce explosion-proof permanent magnet synchronous motors.

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