MarelliMotori motors Germany MarelliMotori models MarelliMotori prices

MarelliMotori motors are a type of motor that changes speed by altering the number of magnetic pole pairs, voltage, current, frequency, and other parameters to achieve higher performance. Due to their excellent performance, variable-speed motors are widely used in industries such as steel, power plants, cables, chemicals, petroleum, cement, textiles, printing and dyeing, papermaking, and machinery for stepless speed control of loads with constant torque or decreasing torque. They are particularly suitable for driving pumps and fans with significant flow variations, achieving good energy-saving results

MarelliMotori motor mechanical characteristics

The motor allows stepless speed control. By controlling the opening of the intake or exhaust valve, i.e., controlling the flow of compressed air, the output power and speed of the motor can be adjusted to achieve the desired speed and power regulation. 2. It can rotate both forward and reverse. Most pneumatic motors can simply change the direction of intake and exhaust using a control valve to achieve forward and reverse rotation of the output shaft, with instantaneous reversal possible. Impact during direction change is minimal. A major advantage of pneumatic motor reversal is its ability to reach full speed almost instantaneously. Vane-type pneumatic motors can reach full speed within one and a half rotations; piston-type pneumatic motors can reach full speed in less than one second. Changing the intake direction via a control valve enables forward and reverse rotation. This process is fast, has low impact, and does not require unloading. 3. Safe operation, unaffected by vibration, high temperature, electromagnetic fields, radiation, etc. Suitable for harsh environments, it operates normally under adverse conditions such as flammable, explosive, high temperature, vibration, humidity, and dust. 4. Features overload protection; it will not fail due to overload. During overload, the motor only reduces speed or stops. Once the overload is removed, it resumes normal operation immediately without causing component damage. It can operate continuously at full load for extended periods with minimal temperature rise. 5. High starting torque allows direct start-up under load. Start and stop actions are rapid. It can start under load. Start and stop actions are quick. 6. Wide power and speed ranges. Power ranges from a few hundred watts to tens of thousands of watts; speed ranges from zero to ten thousand revolutions per minute. 7. Easy to operate and maintain. Pneumatic motors have a simple structure, small size, light weight, high power, easy operation, and convenient maintenance. 8. Uses air as the medium, with no supply difficulties. Exhausted air requires no treatment and is released into the atmosphere without pollution. Compressed air can be supplied centrally and transported over long distances. Due to these advantages, pneumatic motors can operate in harsh environments such as humidity, high temperature, and high dust. In addition to being used as power sources for rock drilling, drilling, mining, and loading equipment in mining machinery, they are also widely adopted in ships, metallurgy, chemicals, papermaking, and other industries.

MarelliMotori motor structure

A motor can be viewed as a DC motor where electronic commutation replaces mechanical commutation. It mainly consists of a synchronous motor body, a power electronic inverter, a rotor position detector, and a controller. The rotor of the synchronous motor is primarily composed of permanent magnets and magnetic conductors. A permanent magnet brushless DC motor mainly consists of a permanent magnet motor body, a rotor position sensor, and an electronic commutation circuit. In terms of both structure and control method, permanent magnet brushless DC motors share many similarities with traditional DC motors: the rotor with permanent magnets replaces the stator poles of a brushed DC motor; the stator with multi-phase windings replaces the armature; and an electronic commutator composed of a solid-state inverter and shaft position detector replaces the mechanical commutator and brushes.

MarelliMotori motor structure

Motors are classified into two types based on rotor structure: squirrel-cage (squirrel-cage asynchronous motor) and wound-rotor asynchronous motors. Asynchronous motors operating as motors are also known as induction motors because the rotor winding current is induced. Asynchronous motors are the most widely used and highest-demand type among various motors. Approximately 90% of electrically powered machinery in various countries uses asynchronous motors, with small asynchronous motors accounting for more than 70%. Asynchronous motors consume a significant proportion of the total load in power systems. In China, asynchronous motor consumption accounts for more than 60% of the total load. An asynchronous motor is an AC motor whose speed under load is not constant relative to the grid frequency. An Induction motor is an asynchronous motor with only one set of windings connected to the power supply. Where there is no risk of misunderstanding or confusion, induction motors are generally referred to as asynchronous motors. The IEC standard states that the term "induction motor" is effectively used as a synonym for "asynchronous motor" in many countries, while some other countries use only the term "asynchronous motor" to represent both concepts.

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