ifac 2011 297 final
... The control properties are greatly influenced by the topology of supply converters. Fig. 1(a) shows interconnection of a DC machine to three-phase source. In Fig. 1(b) an AC machines supplied from three phase source with a DC source as interconnecting element is depicted. Structure in Fig. 1(b) can ...
... The control properties are greatly influenced by the topology of supply converters. Fig. 1(a) shows interconnection of a DC machine to three-phase source. In Fig. 1(b) an AC machines supplied from three phase source with a DC source as interconnecting element is depicted. Structure in Fig. 1(b) can ...
Improving Control Dynamics of PMSM Drive by Estimating Zero
... Dynamic properties of electric drives are crucial to many industrial applications. The most demanding devices are typically fitted with permanent magnet synchronous motors (PMSM), which allow for very fast torque and speed response due to their low stator inductances and low moment of inertia, respe ...
... Dynamic properties of electric drives are crucial to many industrial applications. The most demanding devices are typically fitted with permanent magnet synchronous motors (PMSM), which allow for very fast torque and speed response due to their low stator inductances and low moment of inertia, respe ...
a nanometer profiling device with contact force
... used, the non-contact profile devices are advantageous as no force is involved in the measurement. For many applications, in particular, for the micro-system applications where the steep steps and transparent thin films are involved, the non-contact profiling devices may not work effectively. In the ...
... used, the non-contact profile devices are advantageous as no force is involved in the measurement. For many applications, in particular, for the micro-system applications where the steep steps and transparent thin films are involved, the non-contact profiling devices may not work effectively. In the ...
summary of requirements
... Protection of tap conductors in motor groups: The new 31.4.3 will require all motor tap conductors, i.e. conductors that carry current from a single motor, to have an ampacity, per Table 28.1, that is coordinated with the overall size (ampere rating) of the motor group. Manufacturers may need to mod ...
... Protection of tap conductors in motor groups: The new 31.4.3 will require all motor tap conductors, i.e. conductors that carry current from a single motor, to have an ampacity, per Table 28.1, that is coordinated with the overall size (ampere rating) of the motor group. Manufacturers may need to mod ...
Progress in On-Line Measurement of PD in G.C. Stone I. Culbert
... up to about 600 kHz. Future VS-PWM drives are likely to have shorter switching times and higher switching voltages, making the situation worse. One reason that PD measurement is difficult with VSPWM drives is that the frequency content of the impulse voltages (which are about 1,000 times or 60 dB hi ...
... up to about 600 kHz. Future VS-PWM drives are likely to have shorter switching times and higher switching voltages, making the situation worse. One reason that PD measurement is difficult with VSPWM drives is that the frequency content of the impulse voltages (which are about 1,000 times or 60 dB hi ...
Magnetism - South High School
... Q: What is Transcranial Magnetic Stimulation (TMS), and how does it help depression? A: TMS activates certain parts of the brain by using electrical energy passed through a coil of wires to create a powerful magnetic field. During the procedure, energy from this magnetic field is transferred into a ...
... Q: What is Transcranial Magnetic Stimulation (TMS), and how does it help depression? A: TMS activates certain parts of the brain by using electrical energy passed through a coil of wires to create a powerful magnetic field. During the procedure, energy from this magnetic field is transferred into a ...
55_Shoan Mbabazi - E
... of connection on the grid is of the required standard. In addition, different ways of connecting the turbines to the grid on shore including potential gains from running the collection network at different voltages and frequencies (including ...
... of connection on the grid is of the required standard. In addition, different ways of connecting the turbines to the grid on shore including potential gains from running the collection network at different voltages and frequencies (including ...
2015 New Functionalities in Flux12 with Macros PL CN68
... geometric data (diameter, height, conductor diameter and starting angle), physical data (number of turns, number of coils, etc.). Figure 2b: Example of Faulhaber Coil. ...
... geometric data (diameter, height, conductor diameter and starting angle), physical data (number of turns, number of coils, etc.). Figure 2b: Example of Faulhaber Coil. ...
DP32725728
... Almost every industry and household has motors used in their equipment or appliances. Motors that are often controlled by computers have also become an essential part of many motion control systems. Major problems in applying a conventional control algorithm in a speed controller are the effects of ...
... Almost every industry and household has motors used in their equipment or appliances. Motors that are often controlled by computers have also become an essential part of many motion control systems. Major problems in applying a conventional control algorithm in a speed controller are the effects of ...
Dynamo
... electromagnetic field coils rather than permanent magnets to create the stator field.[9] Wheatstone’s design was similar to Siemens’, with the difference that in the Siemens design the stator electromagnets were in series with the rotor, but in Wheatstone’s design they were in parallel.[10] The use of ...
... electromagnetic field coils rather than permanent magnets to create the stator field.[9] Wheatstone’s design was similar to Siemens’, with the difference that in the Siemens design the stator electromagnets were in series with the rotor, but in Wheatstone’s design they were in parallel.[10] The use of ...
Diesel-electric Drives Diesel
... Lower fuel consumption and emissions due to the possibility to optimize the loading of diesel engines / gensets. The gensets in operation can run on high loads with high engine efficiency. This applies especially to vessels which have a large variation in power demand, for example for an offshore su ...
... Lower fuel consumption and emissions due to the possibility to optimize the loading of diesel engines / gensets. The gensets in operation can run on high loads with high engine efficiency. This applies especially to vessels which have a large variation in power demand, for example for an offshore su ...
Signet 2540 Stainless Steel High Performance Paddlewheel Flow
... Specifications subject to change without notice. All rights reserved. All corporate names and trademarks stated herein are the property of their respective companies. ...
... Specifications subject to change without notice. All rights reserved. All corporate names and trademarks stated herein are the property of their respective companies. ...
Common Questions on Partial DisCharge
... other than stator windings. The magnitude of the detected PD pulse depends on the capacitance of the test object. The higher the capacitance C a, the more the PD current pulse gets shorted out within the test object, and the lower the current will be that can flow in the external circuit C k where t ...
... other than stator windings. The magnitude of the detected PD pulse depends on the capacitance of the test object. The higher the capacitance C a, the more the PD current pulse gets shorted out within the test object, and the lower the current will be that can flow in the external circuit C k where t ...
automated smart sowing machine for port trays (agri robot)
... appliance for our society as India is the 2nd largest producer of vegetable crops in the world. The developed model avoids the wastage of precious seeds as it is designed to pick and drop only one seed at an instant, consequently it increases the percentage of germination which leads to profit to th ...
... appliance for our society as India is the 2nd largest producer of vegetable crops in the world. The developed model avoids the wastage of precious seeds as it is designed to pick and drop only one seed at an instant, consequently it increases the percentage of germination which leads to profit to th ...
J31066073
... Induction heating is a well-known technique to produce very high temperature for applications. A large number of topologies have been developed in this area such as voltage and current source inverter. Recent developments in switching schemes and control methods have made the voltage-source resonant ...
... Induction heating is a well-known technique to produce very high temperature for applications. A large number of topologies have been developed in this area such as voltage and current source inverter. Recent developments in switching schemes and control methods have made the voltage-source resonant ...
Integrated compact units - AEG Industrial Engineering
... commutation of the current in the lower speed range must be ensured by forcing the current to zero (clocking) because the machine voltage is still too low at that point. In the clocking mode, the electronic switching gate (1.2) interrupts the speed controller at the output so that the mains converte ...
... commutation of the current in the lower speed range must be ensured by forcing the current to zero (clocking) because the machine voltage is still too low at that point. In the clocking mode, the electronic switching gate (1.2) interrupts the speed controller at the output so that the mains converte ...
Induction motor
An induction or asynchronous motor is an AC electric motor in which the electric current in the rotor needed to produce torque is obtained by electromagnetic induction from the magnetic field of the stator winding. An induction motor therefore does not require mechanical commutation, separate-excitation or self-excitation for all or part of the energy transferred from stator to rotor, as in universal, DC and large synchronous motors. An induction motor's rotor can be either wound type or squirrel-cage type.Three-phase squirrel-cage induction motors are widely used in industrial drives because they are rugged, reliable and economical. Single-phase induction motors are used extensively for smaller loads, such as household appliances like fans. Although traditionally used in fixed-speed service, induction motors are increasingly being used with variable-frequency drives (VFDs) in variable-speed service. VFDs offer especially important energy savings opportunities for existing and prospective induction motors in variable-torque centrifugal fan, pump and compressor load applications. Squirrel cage induction motors are very widely used in both fixed-speed and variable-frequency drive (VFD) applications. Variable voltage and variable frequency drives are also used in variable-speed service.