maxon DC motor and maxon EC motor Key information
... to the wound stator teeth they have a higher terminal inductance than motors with an ironless winding. As a result at higher speed, the current cannot develop fully during the correspondingly short commutation intervals. Therefore, the apparent torque produced is lower. Current is also fed back into ...
... to the wound stator teeth they have a higher terminal inductance than motors with an ironless winding. As a result at higher speed, the current cannot develop fully during the correspondingly short commutation intervals. Therefore, the apparent torque produced is lower. Current is also fed back into ...
Volume 7, Issue 2, March-April 2016, pp. 78–90, Article ID:... Available online at
... field oriented vector control technique. However, this conventional DTC approach has some disadvantages such as; high torque ripple and variable switching frequency, which is varying with speed, load torque and the selected hysteresis bands. On the other hand to reduce the torque ripple; the hystere ...
... field oriented vector control technique. However, this conventional DTC approach has some disadvantages such as; high torque ripple and variable switching frequency, which is varying with speed, load torque and the selected hysteresis bands. On the other hand to reduce the torque ripple; the hystere ...
AC Induction Motor Control
... control of motor torque and magnetic flux. The control is based on the transformation of current/ voltage coordinates from stationary to rotation that makes the control similar to DC machine control. The control incorporates fast torque/ flux current control loops and slower speed/position control l ...
... control of motor torque and magnetic flux. The control is based on the transformation of current/ voltage coordinates from stationary to rotation that makes the control similar to DC machine control. The control incorporates fast torque/ flux current control loops and slower speed/position control l ...
maxon DC motor and maxon EC motor Key
... – Which maximum voltage is available at the motor terminals? – Which limitations apply with regard to current? The current and voltage of motors supplied with batteries or solar cells are very limited. In the case of control of the unit via a servo amplifier, the amplifier’s maximum current is often ...
... – Which maximum voltage is available at the motor terminals? – Which limitations apply with regard to current? The current and voltage of motors supplied with batteries or solar cells are very limited. In the case of control of the unit via a servo amplifier, the amplifier’s maximum current is often ...
Low cost sinusoidal control of BLDC motors with Hall sensors using
... BLDC motors are the workhorses in most light industrial applications. In some cases, Halleffect position sensors are used to simplify control logics for controlling these motors. BLDC motors, by the nature of currents through them, are somewhat noisy and a little less efficient. These disadvantages ...
... BLDC motors are the workhorses in most light industrial applications. In some cases, Halleffect position sensors are used to simplify control logics for controlling these motors. BLDC motors, by the nature of currents through them, are somewhat noisy and a little less efficient. These disadvantages ...
Simulation and Speed Control of 3-Phase Induction Motor
... motors do not inherently have the capability of variable speed operation. Due to this reason, earlier dc motors were applied in most of the electrical drives. But the recent developments in speed control methods of the induction motor have led to their large scale use in almost all electrical drives ...
... motors do not inherently have the capability of variable speed operation. Due to this reason, earlier dc motors were applied in most of the electrical drives. But the recent developments in speed control methods of the induction motor have led to their large scale use in almost all electrical drives ...
Reduced voltage method for starting squirrel cage induction motor
... Addition of External Resistances in Rotor Circuit This will decrease the starting current, increases the starting torque and also improves the power factor. The circuit diagram is shown below: In the circuit diagram, the three slip rings shown are connected to the rotor terminals of the wound rotor ...
... Addition of External Resistances in Rotor Circuit This will decrease the starting current, increases the starting torque and also improves the power factor. The circuit diagram is shown below: In the circuit diagram, the three slip rings shown are connected to the rotor terminals of the wound rotor ...
Universal motor
... ‘Universal’ signifies that something which is compaible with versatile inputs. We have build small series motors upto ½ KW rating which operates on single phase ac supply as well as on dc . Such motors are called universal motors . An universal motor is a specifically designed series wound motor, th ...
... ‘Universal’ signifies that something which is compaible with versatile inputs. We have build small series motors upto ½ KW rating which operates on single phase ac supply as well as on dc . Such motors are called universal motors . An universal motor is a specifically designed series wound motor, th ...
Brushless Motors
... Io = Noload Current of the Motor, derived from running a motor WOT without a prop at varying voltages. Io can be expressed with an associated Voltage and should be. Kv = K value or voltage constant, the expressed value where the rpm can be surmised by a given voltage. For a 2000 Kv motor an input vo ...
... Io = Noload Current of the Motor, derived from running a motor WOT without a prop at varying voltages. Io can be expressed with an associated Voltage and should be. Kv = K value or voltage constant, the expressed value where the rpm can be surmised by a given voltage. For a 2000 Kv motor an input vo ...
microstepping test board with specialized circuits
... A four-bit digital-to-analog converter (DAC) provides a digital path for controlling the motor current, and, by extension, simplifies implementation of full, half and microstep stepper motor drives. For higher resolution applications, an external DAC can be used. ...
... A four-bit digital-to-analog converter (DAC) provides a digital path for controlling the motor current, and, by extension, simplifies implementation of full, half and microstep stepper motor drives. For higher resolution applications, an external DAC can be used. ...
Rotor side Control of High Power Slip Ring Induction Motor using a
... A single phase induction motor is not self-starting. Thus, it is necessary to provide a starting circuit and associated start windings to give the initial rotation in a single phase induction motor. The normal running windings within such a motor can cause the rotor to turn in either direction, so t ...
... A single phase induction motor is not self-starting. Thus, it is necessary to provide a starting circuit and associated start windings to give the initial rotation in a single phase induction motor. The normal running windings within such a motor can cause the rotor to turn in either direction, so t ...
Energy efficiency in motion
... The European standard series EN 50598 defines the Ecodesign requirements for drive systems in an electrically powered machine, including energy efficiency and lifecycle analysis. The basis for ascertaining and optimizing the efficiency of electrically powered machines was created with the joint conc ...
... The European standard series EN 50598 defines the Ecodesign requirements for drive systems in an electrically powered machine, including energy efficiency and lifecycle analysis. The basis for ascertaining and optimizing the efficiency of electrically powered machines was created with the joint conc ...
Generation torque analysis of brushless DC motor
... The torque characteristics as a function of the rotor position detection error have been analysed. Key investigation results are summarised in the following: 1. Increasing the rotor position detection error makes the average torque decrease and the torque pulsation increase. 2. The average torque wi ...
... The torque characteristics as a function of the rotor position detection error have been analysed. Key investigation results are summarised in the following: 1. Increasing the rotor position detection error makes the average torque decrease and the torque pulsation increase. 2. The average torque wi ...
127 A direct torque control of induction motor based on three
... controllers. This lack of control over frequency is the origin of torque ripples and flux. Similarly, the use of a voltage inverter with two levels limits the power of the drive system. To overcome these problems, this paper propose to study a modified DTC approach by using a three-level inverter (N ...
... controllers. This lack of control over frequency is the origin of torque ripples and flux. Similarly, the use of a voltage inverter with two levels limits the power of the drive system. To overcome these problems, this paper propose to study a modified DTC approach by using a three-level inverter (N ...
Application Note 1501: Brushless Sine Drives
... motors with measurable mechanical friction, and when the Hall-effect signals are well aligned with the motor’s electrical phases. The benefit of “trap drives” is that they tend to be lower cost for a given current rating, and since the Hall sensors always report the absolute position of the rotor, t ...
... motors with measurable mechanical friction, and when the Hall-effect signals are well aligned with the motor’s electrical phases. The benefit of “trap drives” is that they tend to be lower cost for a given current rating, and since the Hall sensors always report the absolute position of the rotor, t ...
Vehicle Power Plant and Transmission Characteristics
... increases. The magnitude of torque at a given slip also increases with increase in slip with the exception of unity slip (starting condition). fs=10Hz fs=30Hz fs=50Hz ...
... increases. The magnitude of torque at a given slip also increases with increase in slip with the exception of unity slip (starting condition). fs=10Hz fs=30Hz fs=50Hz ...
COMPARISON OF SCALAR AND VECTOR CONTROL
... is widely used in industry (Fig. 3). For this strategy, feedback signals are not required. This type of motor control has some advantages: – low cost, – simplicity and – immunity to errors of feedback signals. ...
... is widely used in industry (Fig. 3). For this strategy, feedback signals are not required. This type of motor control has some advantages: – low cost, – simplicity and – immunity to errors of feedback signals. ...
File
... converters one in the armature circuit and the other in the field circuit and both are fed from 3 phase, 400 V, 50 Hz supply. Resistances of the armature and field circuits are 0.2 Ω and 320 Ω respectively. The motor torque constant is 0.5 V.S/A-rad. Field converter has zero degree firing angle dela ...
... converters one in the armature circuit and the other in the field circuit and both are fed from 3 phase, 400 V, 50 Hz supply. Resistances of the armature and field circuits are 0.2 Ω and 320 Ω respectively. The motor torque constant is 0.5 V.S/A-rad. Field converter has zero degree firing angle dela ...
Analysis and Simulation of Switching Angle Effects on Dynamic
... considerations [18]-[19]. A possibility to obtain a very neat axial length for the machine makes axial-flux machines very attractive into applications in which the axial length of the machine is a limiting design parameter. Such applications are, for example electrical vehicles wheel motors and elev ...
... considerations [18]-[19]. A possibility to obtain a very neat axial length for the machine makes axial-flux machines very attractive into applications in which the axial length of the machine is a limiting design parameter. Such applications are, for example electrical vehicles wheel motors and elev ...
Paper - Asee peer logo
... engineers especially with the high number of baby boomers reaching the retiring age. The power engineering workforce is becoming undersized in comparison to the growing demand and the legacy of the existing power systems experience needs to be conserved in order to successfully transition into the n ...
... engineers especially with the high number of baby boomers reaching the retiring age. The power engineering workforce is becoming undersized in comparison to the growing demand and the legacy of the existing power systems experience needs to be conserved in order to successfully transition into the n ...
Strain Gage Load Cell for Tensile and Compression Forces
... Strain gages are applied to the flexural diaphragms in the load cell are strain gages (DMS) and deliver a bridge output voltage directly proportional to the measurand during concentric load application. The force being measured must be applied to the thread along the central axis of the Type 4578A.. ...
... Strain gages are applied to the flexural diaphragms in the load cell are strain gages (DMS) and deliver a bridge output voltage directly proportional to the measurand during concentric load application. The force being measured must be applied to the thread along the central axis of the Type 4578A.. ...
About Brushless DC Motors (brochure)
... provide automatic commutation. In comparison, the brushless DC motor is a reversed design: the permanent magnet is rotating whereas the windings are part of the stator and can be energized without requiring a commutator-and-brush system. Therefore this motor type achieves very long, trouble-free lif ...
... provide automatic commutation. In comparison, the brushless DC motor is a reversed design: the permanent magnet is rotating whereas the windings are part of the stator and can be energized without requiring a commutator-and-brush system. Therefore this motor type achieves very long, trouble-free lif ...
eee iv semester - electrical machines ii
... on the basis of (i).starting torque and starting current.(ii).adoptability to motor rating ,terminal arrangements and s(iii)starting condition. A 12k W,3phase,6pole,50Hz,400V,delta connected induction motor runs at 960 rpm on full load.It takes 85A on direct starting,find the ratio of the starting t ...
... on the basis of (i).starting torque and starting current.(ii).adoptability to motor rating ,terminal arrangements and s(iii)starting condition. A 12k W,3phase,6pole,50Hz,400V,delta connected induction motor runs at 960 rpm on full load.It takes 85A on direct starting,find the ratio of the starting t ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
... BLDC motor is conventionally defined as a permanent magnet synchronous motor with a trapezoidal Back EMF waveform shape. Permanent magnet synchronous machines with trapezoidal Back-EMF and (120 electrical degrees wide) rectangular stator currents are widely used as they offer the following advantage ...
... BLDC motor is conventionally defined as a permanent magnet synchronous motor with a trapezoidal Back EMF waveform shape. Permanent magnet synchronous machines with trapezoidal Back-EMF and (120 electrical degrees wide) rectangular stator currents are widely used as they offer the following advantage ...
幻灯片 1
... Linear Torque/Speed characteristics similar to shunt wound motors. Field magnetic flux is constant Current varies linearly with torque. Self-braking upon disconnection of electrical power Need to short + to – supply, May need resistance to dissipate heat. Magnets lose strength over time an ...
... Linear Torque/Speed characteristics similar to shunt wound motors. Field magnetic flux is constant Current varies linearly with torque. Self-braking upon disconnection of electrical power Need to short + to – supply, May need resistance to dissipate heat. Magnets lose strength over time an ...
Dynamometer
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A dynamometer or ""dyno"" for short, is a device for measuring force, torque, or power. For example, the power produced by an engine, motor or other rotating prime mover can be calculated by simultaneously measuring torque and rotational speed (RPM).A dynamometer can also be used to determine the torque and power required to operate a driven machine such as a pump. In that case, a motoring or driving dynamometer is used. A dynamometer that is designed to be driven is called an absorption or passive dynamometer. A dynamometer that can either drive or absorb is called a universal or active dynamometer.In addition to being used to determine the torque or power characteristics of a machine under test (MUT), dynamometers are employed in a number of other roles. In standard emissions testing cycles such as those defined by the United States Environmental Protection Agency (US EPA), dynamometers are used to provide simulated road loading of either the engine (using an engine dynamometer) or full powertrain (using a chassis dynamometer). In fact, beyond simple power and torque measurements, dynamometers can be used as part of a testbed for a variety of engine development activities, such as the calibration of engine management controllers, detailed investigations into combustion behavior, and tribology.In the medical terminology, hand-held dynamometers are used for routine screening of grip and hand strength, and the initial and ongoing evaluation of patients with hand trauma or dysfunction. They are also used to measure grip strength in patients where compromise of the cervical nerve roots or peripheral nerves is suspected.In the rehabilitation, kinesiology, and ergonomics realms, force dynamometers are used for measuring the back, grip, arm, and/or leg strength of athletes, patients, and workers to evaluate physical status, performance, and task demands. Typically the force applied to a lever or through a cable is measured and then converted to a moment of force by multiplying by the perpendicular distance from the force to the axis of the level.