Product Details
Place of Origin: China
Brand Name: ENNENG
Certification: CE,UL
Model Number: PMM
Payment & Shipping Terms
Minimum Order Quantity: 1 set
Price: USD 500-5000/set
Packaging Details: seaworthy packing
Delivery Time: 15-120 days
Payment Terms: L/C, T/T
Supply Ability: 20000 sets/year
Features: |
Variable Speed Various Load |
Name: |
Permanent Magnet Electric Motor |
Current: |
AC |
Material: |
Rare Earth NdFeB |
Power Range: |
5.5-3000kw |
Installation: |
IMB3 IMB5 IMB35 |
Protection Grade: |
IP54 IP68 IP65 |
Frequency: |
50/60Hz |
Certificate: |
CE, UL |
Service: |
ODM, OEM |
Features: |
Variable Speed Various Load |
Name: |
Permanent Magnet Electric Motor |
Current: |
AC |
Material: |
Rare Earth NdFeB |
Power Range: |
5.5-3000kw |
Installation: |
IMB3 IMB5 IMB35 |
Protection Grade: |
IP54 IP68 IP65 |
Frequency: |
50/60Hz |
Certificate: |
CE, UL |
Service: |
ODM, OEM |
Variable Speed Various Load PMSM Electric Motor For Testbench Adaption
What Is The Permanent Magnet Synchronous Motor?
The Permanent Magnet Synchronous Motor (PMSM) is an AC synchronous motor whose field excitation is provided by permanent magnets. The permanent magnet synchronous motors are very efficient, brushless, very fast, safe, and give a high dynamic performance. Due to their advantages, permanent synchronous motors have many applications and find use in several fields.
The working principle of permanent magnet motor
The permanent magnet synchronous motor working principle is similar to the synchronous motor. The principle of operation is based on the interaction of the rotating magnetic field of the stator and the constant magnetic field of the rotor. It depends on the rotating magnetic field that generates electromotive force at synchronous speed.
When the stator winding is energized by giving the 3-phase supply, a rotating magnetic field is created in between the air gaps. This produces the torque when the rotor field poles hold the rotating magnetic field at synchronous speed and the rotor rotates continuously. As these motors are not self-starting, it is necessary to provide a variable frequency power supply.
Differences Between The Permanent Magnet Motor And Asynchronous Motor:
01. Rotor Structure
Asynchronous motor: The rotor consists of an iron core and a winding, mainly squirrel-cage and wire-wound rotors. A squirrel-cage rotor is cast with aluminum bars. The magnetic field of the aluminum bar cutting the stator drives the rotor.
PMSM Motor: The permanent magnets are embedded in the rotor magnetic poles, and are driven to rotate by the rotating magnetic field generated in the stator according to the principle of magnetic poles of the same phase attracting different repulsions.
02. Efficiency
Asynchronous motors: Need to absorb current from the grid excitation, resulting in a certain amount of energy loss, motor reactive current, and low power factor.
PMSM Motor: The magnetic field is provided by permanent magnets, the rotor does not need exciting current, and the motor efficiency is improved.
03. Volume And Weight
The use of high-performance permanent magnet materials makes the air gap magnetic field of permanent magnet synchronous motors larger than that of asynchronous motors. The size and weight are reduced compared to asynchronous motors. It will be one or two frame sizes lower than asynchronous motors.
04. Motor Starting Current
Asynchronous motor: It is directly started by power frequency electricity, and the starting current is large, which can reach 5 to 7 times the rated current, which has a great impact on the power grid in an instant. The large starting current causes the leakage resistance voltage drop of the stator winding to increase, and the starting torque is small so heavy-duty starting cannot be achieved. Even if the inverter is used, it can only start within the rated output current range.
PMSM Motor: It is driven by a dedicated controller, which lacks the rated output requirements of the reducer. The actual starting current is small, the current is gradually increased according to the load, and the starting torque is large.
05. Power Factor
Asynchronous motors have a low power factor, they must absorb a large amount of reactive current from the power grid, the large starting current of asynchronous motors will cause a short-term impact on the power grid, and long-term use will cause certain damage to the power grid equipment and transformers. It is necessary to add power compensation units and perform reactive power compensation to ensure the quality of the power grid and increase the cost of equipment use.
There is no induced current in the rotor of the permanent magnet synchronous motor, and the power factor of the motor is high, which improves the quality factor of the power grid and eliminates the need to install a compensator.
06. Maintenance
Asynchronous motor + reducer structure will generate vibration, heat, high failure rate, large lubricant consumption, and high manual maintenance cost; it will cause certain downtime losses.
The three-phase Permanent magnet synchronous motor drives the equipment directly. Because the reducer is eliminated, the motor output speed is low, mechanical noise is low, mechanical vibration is small, and the failure rate is low. The entire drive system is almost maintenance-free.
The three-phase Permanent magnet synchronous motor drives the equipment directly. Because the reducer is eliminated, the motor output speed is low, mechanical noise is low, mechanical vibration is small, and the failure rate is low. The entire drive system is almost maintenance-free.
The characteristics and advantages of permanent magnet motors:
Motor from the source of excitation can be divided into two categories: permanent magnet motor, and electric excitation motor. A permanent magnet motor is an electric motor that produces an excitation magnetic field from a permanent magnet. The most widely used three-phase asynchronous motors in industry and civil use, such as Y-Series, Y2-Series, YE2-Series, YX3 Series, Series YB, series YB2 series, etc. all belong to electric excitation motors. ENNENG Motor products are ultra-efficient permanent magnet synchronous motors.
Compared with traditional electric excitation motors, permanent magnet motors, especially rare earth permanent magnet motors, have the advantages of simple structure, reliable operation, small size, lightweight, small loss and high efficiency, and flexible and diverse shape and size of the motor. The application is extremely wide, covering almost all areas of aerospace, national defense, industrial and agricultural production, and daily life.
A permanent magnet synchronous motor (PMSM) is a type of electric motor that uses permanent magnets in the rotor to create a magnetic field. Some of the features of a PMSM motor include:
High efficiency: PMSM motors are highly efficient, with efficiency levels of up to 98%. This is because they have a lower power loss than other types of motors due to their permanent magnets.
High power density: PMSM motors have a high power density, which means they can deliver a high level of power in a small package. This makes them ideal for use in applications where space is limited.
High torque: PMSM motors have high torque density, which means they can produce a lot of torque in a small package. This makes them ideal for use in applications where high torque is required.
Precise control: PMSM motors are known for their precise control, which makes them ideal for use in applications where accurate speed control is required.
Low maintenance: PMSM motors have a simple design and do not require much maintenance. This makes them ideal for use in applications where maintenance is difficult or expensive.
Wide speed range: PMSM motors have a wide speed range, which makes them suitable for use in a variety of applications.
Low noise and vibration: PMSM motors operate quietly and produce minimal vibration, making them suitable for use in applications where noise and vibration must be kept to a minimum.
ENNENG is dedicated to providing customers with stable and energy-efficient permanent magnet motors and solutions, not only saving large amounts of energy and cost for our customers but also contributing to the energy conservation and emission reduction of the social.
Video
Video
Video
Video
Video
Video
Video
