AGTOS motor Germany AGTOS model AGTOS price

AGTOS motor refers to an electromagnetic device that realizes the conversion or transmission of electrical energy based on the law of electromagnetic induction. It generally refers to all machines that can convert mechanical energy into electrical energy and electrical energy into mechanical energy. The motor housing protection rating is IP44, and the cooling method is IC0141 totally enclosed fan-cooled (TEFC). The ambient air temperature varies with the seasons but does not exceed 15℃ to 40℃. The altitude does not exceed 1000m. See the nameplate for rated frequency, rated voltage, insulation class, and duty cycle. When the power supply voltage varies within ±0.05 of the rated value (frequency at rated value), the motor output power maintains the rated value.

AGTOS 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 outstanding 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 adopt full 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 commutators, resulting in reliable operation and low maintenance requirements. 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.

AGTOS motor classification

The motor rotor is designed with salient poles. The field coils installed on the magnetic pole cores are connected in series, arranged with alternating opposite polarities, and have two lead wires connected to two slip rings mounted on the shaft. The field coils are excited by a small DC generator or battery. In most synchronous motors, the DC generator is mounted on the motor shaft to supply the excitation current to the rotor magnetic pole coils. Since this type of synchronous motor cannot start automatically, a squirrel-cage winding is installed on the rotor for starting purposes. The squirrel-cage winding is placed around the rotor, with a structure similar to that of an asynchronous motor. When three-phase AC power is applied to the stator windings, a rotating magnetic field is generated inside the motor. The squirrel-cage winding cuts the magnetic flux lines, generating induced current, which causes the motor to rotate. After the motor starts rotating, its speed gradually increases to slightly below the speed of the rotating magnetic field. At this point, the rotor field coils are excited by DC current, forming specific magnetic poles on the rotor. These poles attempt to track the rotating magnetic poles on the stator, thereby increasing the rotor speed until it rotates synchronously with the rotating magnetic field.

AGTOS motor speed control

Motor speed control: For wound-rotor asynchronous motors, additional resistance is inserted in series with the rotor, increasing the slip rate and causing the motor to operate at a lower speed. The greater the inserted resistance, the lower the motor speed. This method features simple equipment and convenient control, but the slip power is consumed as heat in the resistor. It belongs to stepped speed control, with relatively soft mechanical characteristics. Voltage regulation speed control: Changing the stator voltage of the motor yields a set of different mechanical characteristic curves, thereby achieving different speeds. Since the motor torque is proportional to the square of the voltage, the maximum torque drops significantly, resulting in a narrow speed control range, which makes it difficult to apply to general cage-type motors. To expand the speed control range, voltage regulation speed control should employ cage-type motors with high rotor resistance, such as torque motors specifically designed for voltage regulation speed control, or connect frequency-sensitive resistors in series with wound-rotor motors. To expand the stable operating range, feedback control should be adopted for speed ratios above 2:1 to achieve automatic speed regulation. The main device for voltage regulation speed control is a power supply capable of providing voltage variation. Common voltage regulation methods include series saturated reactors, autotransformers, and thyristor voltage regulation, with thyristor voltage regulation being the optimal method. Characteristics of voltage regulation speed control: 1. Simple circuitry, easy to implement automatic control; 2. During voltage regulation, slip power is consumed as heat in the rotor resistance, resulting in low efficiency. 3. Voltage regulation speed control is generally suitable for production machinery below 100KW. Electromagnetic speed control: An electromagnetic speed control motor consists of three parts: a cage-type motor, an electromagnetic slip clutch, and a DC excitation power supply (controller). The DC excitation power supply has low power, typically composed of a single-phase half-wave or full-wave thyristor rectifier. Changing the conduction angle of the thyristor alters the magnitude of the excitation current. The electromagnetic slip clutch consists of three parts: an armature, magnetic poles, and an excitation winding. The armature and the latter have no mechanical connection and can rotate freely. The armature is coaxially connected to the motor rotor, referred to as the driving part, driven by the motor; the magnetic poles are coupled to the load shaft via a coupling, referred to as the driven part. When both the armature and magnetic poles are stationary, if DC current is applied to the excitation winding, several pairs of alternating N and S poles will form along the circumference of the air gap, with magnetic flux passing through the armature. When the armature rotates with the driving motor, relative motion between the armature and magnetic poles induces eddy currents in the armature. These eddy currents interact with the magnetic flux to generate torque, driving the rotor with magnetic poles to rotate in the same direction, but its speed is always lower than the armature speed N1. This is a slip speed control method. By varying the DC excitation current of the slip clutch, the output torque and speed of the clutch can be changed. Characteristics of electromagnetic speed control motor speed regulation: 1. Simple device structure and control circuitry, reliable operation, and convenient maintenance; 2. Smooth speed control, stepless speed regulation; 3. No harmonic impact on the power grid; 4. Large speed loss, low efficiency. 5. This method is suitable for medium and low-power production machinery requiring smooth operation and short-term low-speed operation.

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