CUSTOM MECHANICAL AND ELECTRICAL DESIGN
EMT electric motors can tailor both the mechanical design and the electrical parameters k to your requirements. Windings are selected so that the working point or application area will lead to the highest efficiency.
Which type of electric motor is most suitable for you depends on your application and circumstances. We will work with you to find the most suitable solution. Customized solutions are our standard.
The types and models of electric motors are briefly explained below. However, our possibilities are much more varied. Let us know your wishes.
DC motors
Various building sizes and customization options
Within the DC motors, EMT offers from extensive program of both permanent magnet DC motors (PM) and field wound DC motors . All motors of this series are implemented as standard in IP54 protection class and on request in IP55 or higher. These motors have mounting dimensions that comply with IEC standard 60072-1 or your customer specific design.
Permanent-magnet DC motors possess a constant and stable stator field that allows linear torque to be realized over the entire speed range. As a result, no excitation winding is required. For this reason, the efficiency is higher than a field-wound DC motor.
Field-wound DC motors can be controlled either in the stator field or in the rotor field. Depending on the stator winding circuit, a distinction is made between the a shunt excited motor, independently excited motor, series motor or compound motor.
The different motors described above provide a solution for a specific load due to their different excitation. The windings can be adapted for a wide range of voltages.
Build Size / Excitation, IC410 (natural cooling), IC411 (proprietary cooling), IC416 (foreign cooling)
DC71-2GP (PM)
IC410/411/416
U [Vdc]
12-220
n [rpm]
1000-3000
Pmech.[kW]
0,13-0,75
DC80-4GP (PM)
IC410/411/416
U [Vdc]
12-220
n [rpm]
1000-3000
Pmech.[kW]
0,37-2,20
DC112-4GPN (PM)
IC410/411/416
U [Vdc]
12-220
n [rpm]
1000-3000
Pmech.[kW]
1,30-4,00
DC90-4GM (Veldgewikkeld)
IC411/416
12-440
0,5 – 3,0
n [rpm]
1000-3000
Pmech.[kW]
0,37-1,50
DC71-2G (Veldgewikkeld)
IC410/411/416/IWC
U [Vc]
12-220
n [rpm]
1000-3000
Pmech.[kW]
0,1-0,37
DC100-4GM (Veldgewikkeld)
IC411/416
U [Vdc]
12-440
n [rpm]
1000-3000
Pmech.[kW]
0,55-2,60
DC112-4GM (Veldgewikkeld)
IC411/416
U [Vdc]
12-440
n [rpm]
1000-3000
Pmech.[kW]
1,30-4,50
DC132-4GM (Veldgewikkeld)
IC411/416
U [Vdc]
110-440
n [rpm]
1000-3000
Pmech.[kW]
3,00-11,00
DC160-4GM (Veldgewikkeld)
DC180-4GM (Veldgewikkeld)
IC411/416
U [Vdc]
110-440
n [rpm]
1000-3000
Pmech.[kW]
8,00-28,00
Features
- Easy speed control: Speed can be easily controlled by varying the voltage.
- High starting torque: DC motors often offer high starting torque, making them suitable for applications that require a lot of power at start-up.
- Easy control: The motors have relatively simple control via a variable direct current source.
- Easy control:The motors have relatively simple control via variable direct currentaMaintenance:Due to the use of carbon brushes and a commutator for reversing the direction of current, regular maintenance is required (wear of carbon brushes).Source.
- Efficiency at higher speeds: Efficiency may decrease at higher speeds due to friction in the brush-commutator combination.
- Size limitations: DC motors are often larger and heavier for the power they provide compared to alternatives such as AC induction motors or PMSM motors.
PERMANENT MAGNET SYNCHRONOUS MOTOR (PMSM)
Permanent magnets
Various building sizes
and customization options
The energy density [W/kg] of PMSM motors is highest compared to asynchronous or DC motors. For the same power, a PMSM motor is smaller and lighter. In addition, the efficiency, over most of the speed range, is highest with this type of motor.
EMT’s PMSM Motors are built according to the S.P.M. topology that achieves the highest energy density and are easily adjustable. Due to their 12 pole design, the motors are still efficient at part load or lower speed. With the option to apply forced water cooling, the motor remains quiet and cool in varying ambient temperatures.
Build Size / Excitation, IC410 (natural cooling), IC411 (proprietary cooling), IC416 (foreign cooling)
SM50-12BL (PMSM)
IC410
M [Nm]
2,3-12
n [rpm]
100-5000
P [kW]
0,5-1,8
U [Vdc]
12-330
IC7A1W7
M [Nm]
4,2-22,3
n [rpm]
100-5000
P [kW]
0,7-3,5
U [Vdc]
12-330
SM71-12BL (PMSM)
IC410
M [Nm]
5,0-35,8
n [rpm]
100-4500
P [kW]
0,78-5,6
U [Vdc]
24-400
IC7A1W7
M [Nm]
10,0-53,8
n [rpm]
100-4500
P [kW]
0,7-8,45
U [Vdc]
24-400
SM90-12BL (PMSM)
IC410
M [Nm]
20-100
n [rpm]
100-4000
P [kW]
3-21
U [Vdc]
48-560
IC410
M [Nm]
30-148
n [rpm]
100-4000
P [kW]
4,7-21
U [Vdc]
48-560
SM112-12BL (PMSM)
IC410
M [Nm]
70-175
n [rpm]
100-3800
P [kW]
11-37
U [Vdc]
96-560
IC7A1W7
M [Nm]
100-300
n [rpm]
100-3800
P [kW]
15-63
U [Vdc]
96-560
SM160-12BL (PMSM)
IC410
M [Nm]
175-325
n [rpm]
350-3400
P [kW]
27,5-51,5
U [Vdc]
400-800
IC7A1W7
M [Nm]
400-700
n [rpm]
350-3400
P [kW]
60-110
U [Vdc]
400-800
Features
- High efficiency: These motors are highly efficient because no energy is lost in generating magnetic fields as with induction motors.
- Constant speed: They rotate synchronously with frequency, maintaining a constant speed under load changes (great for applications requiring stability).
- More compact and lighter: They are smaller and lighter than DC motors and induction motors for the same power.
- Low maintenance: Because they have no brushes or commutator, they require little maintenance.
- Higher cost: The purchase price is often higher than conventional induction motors due to the cost of the permanent magnets.
- Temperature magnets: The magnets used in this type of motor can be sensitive to high temperatures. Prolonged overloading may result in permanent magnet degradation.
AC induction motor
Rotary current
The main advantage of an AC induction motor is its simple design and construction. These motors do not possess carbon brushes and can be strongly overloaded for short periods of time. A sensor bearing can be installed as a feedback system, the number of pulses of which depends on the build size.
All motors in this series are implemented as standard in IP54 protection class and on request in IP55 or higher. These motors have mounting dimensions that comply with IEC standard 60072-1 or Your customer specific design.
The connections (U,V and W) can be done in a terminal box or directly with cables from the motor. The star point is housed internally in the winding with which the connection speaks for itself in these 3 phase versions. Besides a 2 or 4 pole version, other solutions are also possible.
AM100-KA (AC)
IC411
P2 [kW]
2-3
n [rpm]
1435-2850
M [Nm]
10-19,7
U [Vdc]
24-80
IC7A1W7
P2 [kW]
4-5,1
n [rpm]
1435-2850
M [Nm]
17-33,5
U [Vdc]
24-80
AM132-KA (AC)
IC411
P2 [kW]
5,5-7,5
M [Nm]
18,2-49,3
n [rpm]
1455-2890
U [Vdc]
24-240
IC7A1W7
P2 [kW]
8,5-12,7
M [Nm]
41,5-55,5
n [rpm]
1455-2890
U [Vdc]
24-240
AM112-KA (AC)
IC411
P2 [kW]
4,0-5,0
M [Nm]
16,7-27,7
n [rpm]
1430-2870
U [Vdc]
48-80
IC7A1W7
P2 [kW]
6,8-8,5
M [Nm]
1430-2870
n [rpm]
28,3-45,5
U [Vdc]
48-80
AM160-KA (AC)
IC411
P2 [kW]
10-18,5
M [Nm]
32-60,5
n [rpm]
1460-2920
U [Vdc]
24-300
IC7A1W7
P2 [kW]
24-31,5
M [Nm]
78,5-166,5
n [rpm]
1460-2920
U [Vdc]
48-300
AM180-KA (AC)
IC411
P2 [kW]
11-22
M [Nm]
71,8-144
n [rpm]
1460-2930
U [Vdc]
240-300
IC7A1W7
P2 [kW]
18,7-37,5
M [Nm]
122-245
n [rpm]
1460-2930
U [Vdc]
240-300
AM200-KA (AC)
IC411
P2 [kW]
30-37
M [Nm]
119,9-196,4
n [rpm]
1465-2950
U [Vdc]
240-300
IC7A1W7
P2 [kW]
50-62,9
M [Nm]
203,8-330
n [rpm]
1465-2950
U [Vdc]
240-300
Features
- Low maintenance costs: AC motors have no carbon brushes, so less wear and maintenance.
- Efficiency: They are often more efficient than DC motors, especially at higher speeds.
- Cost: AC motors are generally cheaper to purchase than DC motors.
- More limited speed control: Controlling the speed of an AC motor is more complex than for a DC motor.
- Torque at low speeds: At low speeds, an induction motor often has lower torque, which can result in poorer performance when starting under heavy load.
Comparison in brief
Motor type | Benefits | Cons |
DC motor (DC) | Easy speed control, high starting torque, easy control | Maintenance by carbon brushes, lower efficiency at high speed |
AC induction motor | Low maintenance, more efficient at high speed, low cost | Harder speed control, lower torque at low speed |
Permanent magnets Synchronous motor | High efficiency, constant speed, low maintenance, compact | High acquisition cost, temperature of magnets, |
SPECIALS
CUSTOMER-SPECIFIC
In addition to the standard program of electric motors in the DC, AC and PMSM categories, EMT also designs and manufactures customer-specific motors. Here we use our extensive knowledge and experience to provide solutions that do not fall within the standard categories.
These specials are fully customized to your needs and application. Deviations can be in both mechanical design and electrical specifications. Consider, for example, specific operating points, special environmental conditions or deviating dimensions.
It is also possible for smaller series to have a specially tailored engine developed and produced.
