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Industrial Permanent Magnet AC Motor IE5 Energy Efficient

Categories Permanent Magnet AC Motor
Brand Name: ENNENG
Model Number: PMM
Certification: CE,UL
Place of Origin: China
MOQ: 1 set
Price: USD 500-5000/set
Payment Terms: L/C, T/T
Supply Ability: 20000 sets/year
Delivery Time: 15-120 days
Packaging Details: seaworthy packing
Name: AC Gearless Permanent Magnet Motor
Current: AC
Material: Rare Earth NdFeB
Power Range: 5.5-3000kw
Installation: IMB3 IMB5 IMB35
Control: variable frequency vector control
Insulation Class: F(H)
Duty: S1
Efficiency class: IE5
Wiring type: junction box
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Industrial Permanent Magnet AC Motor IE5 Energy Efficient

Energy Efficient Industrial Use AC Gearless Permanent Magnet AC 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?


The PERMANENT MAGNET SYNCHRONOUS MOTOR is mainly composed of the stator, rotor, chassis, front-rear cover, bearings, etc. The structure of the stator is basically the same as that of ordinary asynchronous motors, and the main difference between the permanent magnet synchronous motor and other kinds of motors is its rotor.


The permanent magnet material with pre-magnetized (magnetic charged) magnetic on the surface or inside the permanent magnet of the motor, provides the necessary air gap magnetic field for the motor. This rotor structure can effectively reduce the motor volume, reduce loss and improve efficiency.


How Do The Permanent Magnet Motor Work?


The defining feature of PMACMs – the permanent magnets within their rotor – are acted upon by the rotating magnetic field (RMF) of the stator windings, and are repelled into rotational motion. This is a deviation from other rotors, where the magnetic force must be induced or generated in the rotor housing, requiring more current. This means that PMACMs are generally more efficient than induction motors, as the rotor’s magnetic field is permanent and does not need a source of power to be used for its generation. This also means that they require a variable frequency drive (VFD, or PM drive) to operate, which is a control system that smooths out the torque produced by these motors. By switching the current on and off to the stator windings at certain stages of rotor rotation, the PM drive simultaneously controls torque and current and uses this data to calculate rotor position, and therefore the speed of the shaft output. They are synchronous machines, as their rotational speed matches the speed of the RMF. These machines are relatively new and are still being optimized, so the specific operation of any one PMACM is, for now, essentially unique to each design.

Detailed pictures

Benefits of PMSM motors:

High efficiency
This is particularly true at lower speeds. The permanent magnet motor does not require current to be supplied to its rotor to generate the rotor field, therefore eliminating the rotor losses almost completely. When compared to induction or reluctance motors it also requires lower currents on the stator and has a bigger power factor, leading to smaller current ratings on the controller, and increasing the overall drive system efficiency.

Driving lower speeds at higher efficiency than an induction motor might delete the requirement of a speed-reduction transmission, taking the complexity out of the mechanical arrangement.


Constant torque
This type of motor can generate constant torque and maintain full torque at low speeds.


Size
The smaller size, lighter weight, and less coil provide a higher power density.


Cost-effective
With the absence of brushes, there are reduced maintenance costs.


Minimal heat
In PMSM the heat is generated on the stator coils and there are no brushes and only minimal heat generated on the rotor, facilitating the cooling of the motor. As they run cooler than induction motors, the motor's reliability and lifespan are increased.


Speed range
This type of motor can have a wide speed range with the use of Field Weakening and can adopt the maximum torque/current (MTPA) control strategy during constant torque operation.


Permanent magnet AC (PMAC) motors have a wide range of applications including:


Industrial Machinery: PMAC motors are used in a variety of industrial machinery applications, such as pumps, compressors, fans, and machine tools. They offer high efficiency, high power density, and precise control, making them ideal for these applications.


Robotics: PMAC motors are used in robotics and automation applications, where they offer high torque density, precise control, and high efficiency. They are often used in robotic arms, grippers, and other motion control systems.


HVAC Systems: PMAC motors are used in heating, ventilation, and air conditioning (HVAC) systems, where they offer high efficiency, precise control, and low noise levels. They are often used in fans and pumps in these systems.


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 is 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 a 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.


What applications use PMSM motors?

Industries that use PMSM motors include Metallurgical, Ceramic, Rubber, Petroleum, Textiles, and many others. PMSM motors can be designed to operate at synchronous speed from a supply of constant voltage and frequency as well as Variable Speed Drive (VSD) applications. Widely used in electric vehicles (EVs) due to high efficiency and power and torque densities, they are generally a superior choice in high torque applications such as mixers, grinders, pumps, fans, blowers, conveyors, and industrial applications where traditionally induction motors are found.


EMF and Torque Equation


In a synchronous machine, the average EMF induced per phase is called dynamic induces EMF in a synchronous motor, the flux cut by each conductor per revolution is Pϕ Weber

Then the time taken to complete one revolution is 60/N sec


The average EMF induced per conductor can be calculated by using


( PϕN / 60 ) x Zph = ( PϕN / 60 ) x 2Tph


Where Tph = Zph / 2


Therefore, the average EMF per phase is,


= 4 x ϕ x Tph x PN/120 = 4ϕfTph

Where Tph = no. Of turns connected in series per phase


ϕ = flux/pole in weber


P= no. Of poles


F= frequency in Hz


Zph= no. Of conductors connected in series per phase. = Zph/3


The EMF equation depends on the coils and the conductors on the stator. For this motor, the distribution factor Kd and pitch factor Kp are also considered.


Hence, E = 4 x ϕ x f x Tph xKd x Kp


The torque equation of a permanent magnet synchronous motor is given as,


T = (3 x Eph x Iph x sinβ) / ωm


The reason why the permanent magnet motor can save electricity:


When the three-phase stator windings of the permanent magnet motor (each with a difference of 120° electrical angle) are fed with a three-phase alternating current with a frequency off, a rotating magnetic field that moves at a synchronous speed will be generated.

In the steady state, the main pole magnetic field rotates synchronously with the rotating magnetic field, so the rotor speed is also the synchronous speed, the stator rotating magnetic field and the main pole magnetic field established by the permanent magnet remain relatively static, and they interact and generate electromagnetic torque, The drive motor rotates and performs energy conversion.


The permanent magnet variable frequency air compressor adopts a high-efficiency permanent magnet motor + inverter (PM motor). The screw host and the high-efficiency permanent magnet motor share the same main shaft. The motor has no bearing. , the transmission efficiency is 100%. This structure eliminates the traditional motor bearing failure point and realizes the motor maintenance-free.


The rare earth permanent magnet material has excellent magnetic properties. After magnetization, it can establish a strong permanent magnetic field without additional energy, which is used to replace the electric excitation field of traditional motors. , Reliable operation, small size, and lightweight. It can not only achieve high performance (such as ultra-high efficiency, ultra-high-speed, and ultra-high response speed) unmatched by traditional electric excitation motors but also can be made into special motors that can meet specific operating requirements, such as elevator traction motors, special motors for automobiles, etc.


The combination of rare earth high-efficiency permanent magnet motor with power electronic technology and microcomputer control technology has improved the performance of the motor and transmission system to a new level:

The high-efficiency permanent magnet variable frequency motor always maintains high efficiency under any load, saving more than 38% energy compared with ordinary motors and more than 10% energy saving to induction variable frequency motors.

After the motor is stopped, it can be started immediately, and it can be started and stopped infinitely without affecting the life of the motor. The starting current does not exceed 100% of the full load current.

Because the permanent magnet variable frequency motor has the advantages of low speed and high output torque, its variable frequency control mode is wider than that of the ordinary induction variable frequency motor. The permanent magnet variable frequency motor is 30% smaller in volume and 35% lighter in weight than motors with the same power, and easier to maintain. Therefore, improving the performance and level of the supporting technical equipment is an important development direction for the motor industry to adjust the industrial structure.

At present, the high-efficiency permanent magnet variable frequency motor is the best choice for a screw air compressor drive motor. It is more efficient and energy-saving than an ordinary three-phase asynchronous variable frequency motor!


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.

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