High Power Low Maintenance And Noise Permanent Magnet AC Motor

Benefits of PMSM motors:
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The permanent magnet motor is a new type of drive system with wide application, stable performance, high efficiency, and low noise. In internal mixers, the application of permanent magnet motors can bring the following advantages:

High efficiency: Compared with traditional AC asynchronous motors, permanent magnet motors have higher efficiency. The reason for this is that permanent magnet motors use permanent magnets as the rotor part, and the magnetic field of permanent magnets does not need to be excited by electric current, so energy loss and waste can be reduced.

High precision: Due to the digital control technology of the permanent magnet motor, more precise speed and torque control can be achieved. In internal mixers, this advantage makes the rubber mixing process more precise and controllable.

Good stability: The torque-speed characteristic curve of the permanent magnet motor is relatively stable, so the use of the internal mixer can improve the stability and reliability of the equipment.

Small size: The permanent magnet motor has the characteristics of a compact structure and small size, which can greatly reduce the overall size and weight of the mixer, and facilitate the installation and maintenance of the equipment.

Energy saving and environmental protection: The high efficiency and high-precision control of permanent magnet motors can reduce energy consumption and reduce environmental pollution. In addition, permanent magnet motors do not need to use rare metals, and also meet the requirements of modern society for environmental protection and sustainable development.

Permanent magnet synchronous motors with internal magnets: Maximum energy efficiency

The permanent magnet synchronous motor with internal magnets (IPMSM) is the ideal motor for traction applications where the maximum torque does not occur at maximum speed. This type of motor is used in applications that require high dynamics and overload capacity. And it is also the perfect choice if you want to operate fans or pumps in the IE4 and IE5 range. The high purchase costs are usually recouped through energy savings over the run time, provided that you operate it with the right variable frequency drive.

Our motor-mounted variable frequency drives use an integrated control strategy based on MTPA (Maximum Torque per Ampere). This allows you to operate your permanent magnet synchronous motors with maximum energy efficiency. The overload of 200 %, the excellent starting torque, and the extended speed control range also allow you to fully exploit the motor rating. For fast recovery of costs and the most efficient control processes.

IPM (Interior Permanent Magnet) Motor Features:

High torque and high efficiency
High torque and high output are achieved by using reluctance torque in addition to magnetic torque.

Energy-saving operation
It consumes up to 30% less power compared to conventional SPM motors.

High-speed rotation
It can respond to high-speed motor rotation by controlling the two types of torque using vector control.

Safety
Since the permanent magnet is embedded, mechanical safety is improved as, unlike in an SPM, the magnet will not detach due to centrifugal force.

Permanent magnet synchronous motors with external magnets for classic servo applications

Permanent magnet synchronous motors with external magnets (SPMSM) are ideal motors when you need high overloads and rapid acceleration, for example in classic servo applications. The elongated design also results in low mass inertia and can be optimally installed. However, one disadvantage of the system consisting of SPMSM and variable frequency drive is the costs associated with it, as expensive plug technology and high-quality encoders are often used.

Renewable Energy Systems: PMAC motors are used in renewable energy systems, such as wind turbines and solar trackers, where they offer high efficiency, high power density, and precise control. They are often used in the generators and tracking systems in these systems.

Medical Equipment: PMAC motors are used in medical equipment, such as MRI machines, where they offer high torque density, precise control, and low noise levels. They are often used in the motors that drive the moving parts in these machines.

The development trend of rare earth permanent magnet motors

Rare earth permanent magnet motors are developing towards high power (high speed, high torque), high functionality, and miniaturization, and are constantly expanding new motor varieties and application fields, and the application prospects are very optimistic. In order to meet the needs, the design and manufacturing process of rare earth permanent magnet motors still need to be continuously innovated, the electromagnetic structure will be more complex, the calculation structure will be more accurate, and the manufacturing process will be more advanced and applicable.

I. Maintenance

1. Please carry out regular maintenance of the bearing strictly in accordance with the bearing lubrication indication plate. The motor should be refilled with grease immediately after running for about 2000 hours, and the grease brand must be carefully identified before refilling. When the bearing is found to be overheated or the grease is degraded during operation, it should be replaced in time. The old grease should be removed when replacing, and the bearing and the inner and outer cover oil chambers of the bearing should be cleaned with gasoline, and then clean grease of the same brand should be added. Motor with a speed of 3000rpm and above, the amount of refueling: the bearing cavity is filled, the amount of grease added to the oil chamber of the bearing inner cover accounts for 1/2 of the oil chamber, the remaining speed motor refueling amount: the bearing inner cavity is filled, and the bearing inner cover oil chamber is filled The amount of grease occupies 2/3 of the oil chamber.

2. When replacing the bearing, a special bearing disassembly tool must be used to pull the bearing from the motor shaft, and the disassembly force must not be directly applied to the motor shaft. When installing a new bearing, the hot sleeve method should be used to install the bearing. After the bearing is heated to 90°C, the bearing sleeve should be placed on the bearing position on the shaft.

II. Storage

The motor should be stored in a ventilated and dry place without corrosive gas.

III. Disclaimer

The company is not responsible for maintenance and compensation for motor failures that occur in the following situations.

1. The long-term severe overload operation of the motor causes the winding to become heated and burned.

2. The product is not installed correctly, such as severely knocking on the motor spindle and the flange surface of the machine cover to cause deformation of the parts.

3. The user does not use and store the motor correctly according to the provisions of this manual, and the failure and loss are caused by human factors.