ITALGEAR motor Germany ITALGEAR model ITALGEAR price

ITALGEAR motor refers to a motor that, under standard environmental conditions, operates continuously with 100% rated load within the 10%~100% rated speed range, without the temperature rise exceeding the motor's specified allowable value. When the slip of an asynchronous motor does not change significantly, the speed is proportional to the frequency; thus, changing the power supply frequency changes the speed of the asynchronous motor. During variable frequency speed control, it is generally desired to keep the main magnetic flux constant. If the main magnetic flux is greater than the flux during normal operation, the magnetic circuit becomes saturated, causing the excitation current to increase and the power factor to decrease; if the main magnetic flux is less than the flux during normal operation, the motor torque decreases.

ITALGEAR motor applications

Static terminology for motors: Number of phases: The number of pairs of excitation coils that generate different pole pair N, S magnetic fields. Commonly denoted by m. Number of beats: The number of pulses or conducting states required to complete one periodic change of the magnetic field, denoted by n, or refers to the number of pulses required for the motor to rotate through one tooth pitch angle. Taking a four-phase motor as an example, the four-phase four-beat operation mode is AB-BC-CD-DA-AB, and the four-phase eight-beat operation mode is A-AB-B-BC-C-CD-D-DA-A. Step angle: The angular displacement of the motor rotor corresponding to one pulse signal, denoted by θ. θ=360 degrees (rotor teeth J * number of operating beats). Taking conventional two-phase and four-phase motors with 50 rotor teeth as an example: in four-beat operation, the step angle is θ=360 degrees/(50*4) =1.8 degrees (commonly known as full step); in eight-beat operation, the step angle is θ=360 degrees/(50*8) =0.9 degrees (commonly known as half step). Detent torque: The locking torque of the motor rotor itself when the motor is not energized (caused by harmonics of the magnetic field tooth shape and mechanical errors). Static torque: The locking torque of the motor shaft when the motor is not rotating under rated static electrical action. This torque is a standard for measuring motor volume (geometric dimensions) and is independent of drive voltage and drive power source. Although static torque is proportional to the electromagnetic excitation ampere-turns and related to the air gap between the stator teeth and the rotor, excessively reducing the air gap and increasing excitation ampere-turns to improve static torque is not advisable, as this will cause motor heating and mechanical noise.

ITALGEAR motor working principle

When the motor is operating, three-phase symmetrical current flows through the three-phase windings of the stator, and direct current flows through the excitation winding of the rotor. When three-phase alternating current flows through the three-phase symmetrical windings of the stator, a rotating magnetic field is generated in the air gap. When direct current flows through the rotor excitation winding, a stationary magnetic field with constant polarity is generated. If the number of pole pairs of the rotor magnetic field is equal to the number of pole pairs of the stator magnetic field, the rotor magnetic field rotates synchronously with the stator rotating magnetic field due to the magnetic pull of the stator magnetic field; that is, the rotor rotates at the same speed and in the same direction as the rotating magnetic field. This is the basic working principle of a synchronous motor. There are three main operating modes for synchronous motors: as a generator, as a motor, and as a compensator. Operating as a generator is the primary mode for synchronous motors. Operating as a motor is another important mode. The power factor of a synchronous motor can be adjusted; in applications where speed control is not required, using large synchronous motors can improve operating efficiency. Small synchronous motors are increasingly used in variable frequency speed control systems. Synchronous motors can also be connected to the grid as synchronous compensators. In this case, the motor carries no mechanical load and adjusts the excitation current in the rotor to supply the required inductive or capacitive reactive power to the grid, thereby improving the grid power factor or regulating the grid voltage. Like other types of rotating electrical machines, synchronous generators consist of two main parts: a stationary stator and a rotatable rotor. They are generally classified into rotating-field synchronous motors and rotating-armature synchronous motors. The most common type is the rotating-field synchronous generator, where the inner circle of the stator core has uniformly distributed stator slots containing three-phase symmetrical windings arranged according to a specific pattern. The stator of this type of synchronous motor is also called the armature, and the stator core and windings are called the armature core and armature windings, respectively. The rotor core is equipped with paired magnetic poles of a specific shape, with excitation windings wound around the poles. When direct current is applied, a distributed magnetic field with alternating polarities is formed in the motor's air gap, known as the excitation magnetic field (also called the main magnetic field or rotor magnetic field). The prime mover drives the rotor to rotate (inputting mechanical energy into the motor), and the excitation magnetic field with alternating polarities rotates with the shaft, sequentially cutting through each phase winding of the stator (equivalent to the conductors of the windings cutting the excitation magnetic field in the reverse direction).

ITALGEAR motor mechanical characteristics

The motor has the following features: B class temperature rise design, F class insulation manufacturing. High-polymer insulation materials and vacuum pressure impregnation manufacturing processes, along with special insulation structures, are adopted to significantly improve the insulation voltage resistance and mechanical strength of the electrical windings, sufficient to handle high-speed motor operation and resist damage from high-frequency current impacts and voltage stresses from inverters. High balancing quality, vibration level is R class (vibration reduction class). Mechanical components are processed with high precision, and specialized high-precision bearings are used, allowing for high-speed operation. Forced ventilation cooling system uses imported axial flow fans that are ultra-quiet, long-life, and provide strong airflow. This ensures effective heat dissipation at any speed, enabling long-term operation at high or low speeds. The YP series motors, designed using AMCAD software, offer a wider speed control range and higher design quality compared to traditional variable frequency motors. Special magnetic field design further suppresses high-order harmonic magnetic fields to meet design specifications for wide frequency range, energy saving, and low noise. It features wide-range constant torque and power speed control characteristics, with smooth speed regulation and no torque ripple. It matches well with various inverters; combined with vector control, it achieves zero-speed full torque, high torque at low frequency, high-precision speed control, position control, and fast dynamic response control. The YP series variable frequency dedicated motors can be equipped with brakes and encoders, enabling precise stopping and high-precision speed control through closed-loop speed control. Using a "gearbox + variable frequency dedicated motor + encoder + inverter" configuration achieves precise control of ultra-low speed stepless speed regulation. The YP series variable frequency dedicated motors have good universality; their mounting dimensions comply with IEC standards and are interchangeable with general standard motors.

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