Benefits of PMSM motors:
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.
