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 | 15 〜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% |
Construction of PMSM
A basic synchronous motor and a permanent magnet synchronous motor
(PMSM) are constructed similarly, with the rotor design being the
primary distinction. In contrast to a conventional rotor, a PMSM's
rotor uses permanent magnets to create field poles in place of
field windings. Because of their high permeability, medium-grade
iron, boron, and samarium-cobalt are frequently used to make
permanent magnets.
Neodymium-boron-iron permanent magnets are the most commonly used
because they are readily available and reasonably priced. This kind
of magnet is fixed to the rotor, which is normally housed inside
the electric motor's stator. On the other hand, certain motor
configurations include an external rotor, which leads to an
inside-out design.
The rotor primarily comprises these powerful permanent magnets,
which are selected for their high coercive force. On the other
hand, the stator consists of an outer frame and core housing
windings. In many cases, a design incorporating two- or three-phase
windings is commonly adopted for the stator.
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.
Working Principle of PMSM
A synchronous motor works on the basis of the interaction between
the constant magnetic field of the rotor and the spinning magnetic
field of the stator. A revolving magnetic field is produced by a
synchronous motor's stator, just like in a three-phase induction
motor. Ampere's Law states that torque is produced by the
synchronous alternating current from the stator windings and the
rotor's magnetic field. This torque allows the rotor to rotate more
easily.
A constant magnetic field is produced by permanent magnets on the
rotor of permanent magnet synchronous motors (PMSM). The rotor's
poles line up with the stator's revolving magnetic field when it
rotates at the synchronous speed. As a result, when directly linked
to a network of three-phase current, PMSMs are unable to
self-start.
