50HZ 60HZ 3 Phase Permanent Magnet Synchronous Motor Price IC411 Cooling

The permanent magnet synchronous motor has the following characteristics:

• Rated efficiency is 2% to 5% higher than normal asynchronous motors;
• The efficiency rises rapidly with the increase of the load. When the load changes within the range of 25% to 120%, it maintains high efficiency. The high-efficiency operating range is much higher than that of ordinary asynchronous motors. Light-load, variable-load, and full-load all have significant energy-saving effects;
• Power factors up to 0.95 and above, no reactive compensation required;
• The power factor is greatly improved. Compared with asynchronous motors, the running current is reduced by more than 10%. Due to the decrease in operating current and system losses, energy-saving effects of about 1% can be achieved.
• Low-temperature rise, high power density: 20K lower than three-phase asynchronous motor temperature rise, design temperature rise is the same and can be made into a smaller volume, saving more effective materials;
• High starting torque and high overload capacity: according to requirements, it can be designed with high starting torque (3-5 times) and high overload capacity;
• The variable frequency speed control system is used, which is better in dynamic response and better than that of asynchronous motors.
• The installation dimensions are the same as the asynchronous motors currently widely used, and the design and selection are very convenient.
• Due to the increase in power factor, the visual power of the power supply system transformer is greatly reduced, which improves the power supply capacity of the transformer, and can also greatly reduce the cost of the system cable (new project);
• When the new project is built, all the drive systems use permanent magnet synchronous motors, the project investment is basically the same as the use of asynchronous motors, and the project can continue to obtain energy-saving benefits after the project is put into operation;

In the general industrial sector, the replacement of low-voltage(380/660/1140V) high-efficiency asynchronous motors, the system saves 5% to 30% energy, and the high-voltage(6kV/10kV) high-efficiency asynchronous motors, the system saves 2% to10%.

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.

Application:

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.

A permanent magnet motor (also called PM) can be separated into two main categories: Interior Permanent Magnet (IPM) and Surface Permanent Magnet (SPM). Both types generate magnetic flux by the permanent magnets affixed to or inside of the rotor.

SPM

SURFACE PERMANENT MAGNET

A type of motor in which permanent magnets are attached to the rotor circumference.

SPM motors have magnets affixed to the exterior of the rotor surface, their mechanical strength is so weaker than the IPM one. The weakened mechanical strength limits the motor’s maximum safe mechanical speed. In addition, these motors exhibit very limited magnetic saliency (Ld ≈ Lq). Inductance values measured at the rotor terminals are consistent regardless of the rotor position. Because of the near unity saliency ratio, SPM motor designs rely significantly, if not completely, on the magnetic torque component to produce torque.

IPM

INTERIOR PERMANENT MAGNET

A type of motor that has a rotor embedded with permanent magnets is called IPM.

IPM motors have a permanent magnet embedded into the rotor itself. Unlike their SPM counterparts, the location of the permanent magnets makes IPM motors very mechanically sound, and suitable for operating at very high speeds. These motors also are defined by their relatively high magnetic saliency ratio (Lq > Ld). Due to their magnetic saliency, an IPM motor has the ability to generate torque by taking advantage of both the magnetic and reluctance torque components of the motor.

Why you should choose an IPM motor instead of an SPM?

1. High torque is achieved by using reluctance torque in addition to magnetic torque.

2. IPM motors consume up to 30% less power compared to conventional electric motors.

3. Mechanical safety is improved as, unlike in an SPM, the magnet will not detach due to centrifugal force.

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

Brushless permanent magnet (PM) motors operate with an AC power supply so are often referred to as PMAC motors. The use of permanent magnets eliminates the need for conductors (rotor bars) so rotor losses are eliminated. This design makes it possible to combine high efficiency, low speed, and high torque in a single package. For small motor sizes, the efficiency of the PM motor maybe 10% to 15% greater than older, standard-efficiency motors at the same load point. These efficiency gains hold over the entire range of typical motor loads.

Will the permanent magnet motor demagnetize?

It is possible for a permanent magnet motor to demagnetize, but it is generally unlikely under normal operating conditions. Permanent magnets are made of materials such as neodymium, samarium cobalt, or ferrite, which are highly resistant to demagnetization. These materials are chosen specifically because they have high magnetic coercivity, which means that they are able to resist demagnetization forces.

However, there are some situations that could lead to the demagnetization of the permanent magnets in a motor. For example, if the motor is exposed to extremely high temperatures, above the maximum operating temperature specified by the manufacturer, the permanent magnets could lose their magnetic strength over time. Additionally, exposure to a strong external magnetic field or mechanical shock could also potentially demagnetize the magnets.

To prevent demagnetization of the permanent magnets in a motor, it is important to operate the motor within its specified temperature range and to avoid exposing it to strong magnetic fields or mechanical shocks. Additionally, some manufacturers may use methods such as heat treatment or magnetizing in a particular direction to enhance the resistance of the magnets to demagnetization.

Due to the need for a drive or controller, variable-speed PMAC motors cost much more than constant-speed Premium Efficiency induction motors. PM motors have the variable-speed capability, however, so are equivalent replacements for an electronic pulse-width modulated variable frequency drive (VFD) controlling a new Premium Efficiency inverter-duty motor. When replacing constant-speed motors in variable flow applications, energy savings due to the variable-speed capability of the PMAC motor will greatly exceed the savings due to the increased efficiency of the motor itself. Permanent magnet motors provide improved efficiency over their entire operating range and meet or exceed the International Electrotechnical Commission (IEC) IE4 efficiency standards.

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.