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Variable Speed Permanent Magnet Synchronous Motor

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QINGDAO ENNENG MOTOR CO.,LTD.

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Variable Speed Permanent Magnet Synchronous Motor

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Brand Name :	ENNENG
Model Number :	PMM
Certification :	CE,UL
Price :	USD 500-5000/set
Payment Terms :	L/C, T/T
Supply Ability :	20000 sets/year
Delivery Time :	15-120 days

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Variable Speed Permanent Magnet Synchronous Motor

IC411 Cooling Variable Frequency Permanent Magnet Synchronous Motor

Energy Efficiency Standards	comply with GB30253-1 grade	Work Mode	S1
Altitude	below 1000m	Environmental Temperature	-15～+40℃
Installation Dimensions	comply with IEC standard	Control Mode	variable frequency vector control
Power Range	5.5 〜3000kw	Install Type	IMB3 IMB5 IMB35
Cooling Way	IC411 or IC416	Rated Efficiency	50,75,125,150Hz(customized as per requirement)
Insulation Class	F(H)	Optional Parts	Encoder, spiral transformer, PTC, PT100
Protection Grade	IP54(IP23 customizable)	Wiring Type	junction box (aviation plug can be customized as per requirement)
Installation	IMB3 IMB5 IMB35	Rated Voltage	380V±10%,660V±10%
Required Environment	below 1000m altitude
	temperature -15〜45°C
	relative humidity below 90%

What Is The Permanent Magnet Synchronous Motor?

Permanent magnet motors are electric motors that use permanent magnets instead of electromagnets to create the magnetic field required for the motor's operation. These magnets are typically made of rare-earth elements such as neodymium or samarium-cobalt, which have strong magnetic properties. The use of permanent magnets eliminates the need for a separate power source to create the magnetic field, resulting in a more efficient and compact motor design. Permanent magnet motors are commonly used in various applications such as electric vehicles, wind turbines, and industrial machinery.

Analysis of the principle of the technical advantages of permanent magnet motor

The principle of a permanent magnet synchronous motor is as follows: In the motor's stator winding into the three-phase current, after the pass-in current, it will form a rotating magnetic field for the motor's stator winding. Because the rotor is installed with the permanent magnet, the permanent magnet's magnetic pole is fixed, according to the principle of magnetic poles of the same phase attracting different repulsion, the rotating magnetic field generated in the stator will drive the rotor to rotate, The rotation speed of the rotor is equal to the speed of the rotating pole produced in the stator.

Due to the use of permanent magnets to provide magnetic fields, the rotor process is mature, reliable, and flexible in size, and the design capacity can be as small as tens of watts, up to megawatts. At the same time, by increasing or decreasing the number of pairs of rotor permanent magnets, it is easier to change the number of poles of the motor, which makes the speed range of permanent magnet synchronous motors wider. With multi-pole permanent magnet rotors, the rated speed can be as low as a single digit, which is difficult to achieve by ordinary asynchronous motors.

Especially in the low-speed high-power application environment, the permanent magnet synchronous motor can be directly driven by a multi-pole design at low speed, compared with an ordinary motor plus reducer, the advantages of a permanent magnet synchronous motor can be highlighted.

Detailed pictures

Variable Speed Permanent Magnet Synchronous Motor

Permanent Magnet Motors vs Induction Motors

1. The motor is small in size and light in weight

In recent years, with the continuous application of high-performance permanent magnet materials, the power density of permanent magnet synchronous motors has been greatly improved. The output torque of permanent magnet synchronous motors under the same volume is about 1.7 times that of induction motors.

2. Wide speed range

The permanent magnet synchronous motor based on the special structure design can adopt the maximum torque/current control strategy during constant torque operation and adopts the field weakening control strategy during constant power operation, which can obtain good speed regulation operation characteristics, and successfully achieve over 5 times the field weakening speed range.

3. Small moment of inertia, high acceleration can be obtained, and good dynamic performance

4. Large overload capacity

The rotor of a permanent magnet synchronous motor has no slippage. When rigid processing is carried out, there will be no surface effect processing abnormality caused by speed fluctuation.

Applications of Permanent Magnet Synchronous Motor
Permanent magnet synchronous motors have the advantages of simple structure, small size, high efficiency, and high power factor. It has been widely used in the metallurgical industry (ironmaking plant and sintering plant, etc.), ceramic industry (ball mill), rubber industry (internal mixer), petroleum industry (pumping unit), textile industry (double twist machine, spinning frame) and other industries in the medium and low voltage motor.

Permanent magnet synchronous motors can be combined with frequency converters to form the best open-loop step-less speed control system, which has been widely used for speed control transmission equipment in petrochemical, chemical fiber, textile, machinery, electronics, glass, rubber, packaging, printing, paper making, printing and dyeing, metallurgy and other industries.

Why choose permanent magnet ac motors?

Permanent magnet AC (PMAC) motors offer several advantages over other types of motors, including:

High Efficiency: PMAC motors are highly efficient due to the absence of rotor copper losses and reduced winding losses. They can achieve efficiencies of up to 97%, resulting in significant energy savings.

High Power Density: PMAC motors have a higher power density compared to other motor types, which means they can produce more power per unit of size and weight. This makes them ideal for applications where space is limited.

High Torque Density: PMAC motors have a high torque density, which means they can produce more torque per unit of size and weight. This makes them ideal for applications where high torque is required.

Reduced Maintenance: Since PMAC motors have no brushes, they require less maintenance and have a longer lifespan than other motor types.

Improved Control: PMAC motors have better speed and torque control compared to other motor types, making them ideal for applications where precise control is required.

Environmentally Friendly: PMAC motors are more environmentally friendly than other motor types since they use rare earth metals, which are easier to recycle and produce less waste compared to other motor types.

Overall, the advantages of PMAC motors make them an excellent choice for a wide range of applications, including electric vehicles, industrial machinery, and renewable energy systems.

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