DC Generator
... control. Since speed is directly proportional to armature voltage and inversely proportional to the magnetic flux produced by the poles, adjusting the armature voltage and/or the field current will change the rotor speed. ...
... control. Since speed is directly proportional to armature voltage and inversely proportional to the magnetic flux produced by the poles, adjusting the armature voltage and/or the field current will change the rotor speed. ...
servo control facts
... The return signal (feedback signal) provides the means to monitor the process for correctness. From the automatic pick and place application example previously cited, if the shaft cannot rotate to bins B and C, the feedback will inform the control of an error and the control can activate a light or ...
... The return signal (feedback signal) provides the means to monitor the process for correctness. From the automatic pick and place application example previously cited, if the shaft cannot rotate to bins B and C, the feedback will inform the control of an error and the control can activate a light or ...
A New shaft position control for Switched Reluctance Motor in Harsh
... Abstract:- This paper describes a new method for direct sensing of the rotor position in switched reluctance motor that can be utilized in a very harsh environment such as a furnace. In this method, a new sensorless technique applied to a mechanical sensing unit made up of a rotor and a stator lamin ...
... Abstract:- This paper describes a new method for direct sensing of the rotor position in switched reluctance motor that can be utilized in a very harsh environment such as a furnace. In this method, a new sensorless technique applied to a mechanical sensing unit made up of a rotor and a stator lamin ...
Load bank testing
... multiple generators and a UPS, in Resistors has supplied many such sequence. Again, by considering testing at the planning stage it’s easy loads for these applications, with power ratings ranging from 5kW up to to build this into the system. 2MW. Customers include generating set builders, contractor ...
... multiple generators and a UPS, in Resistors has supplied many such sequence. Again, by considering testing at the planning stage it’s easy loads for these applications, with power ratings ranging from 5kW up to to build this into the system. 2MW. Customers include generating set builders, contractor ...
BX26501512
... According to this novel concept of decoupling DTC is seen to be different from FOC and it has satisfied some advantages like simplicity and quick torque response [1:3]. In this paper, a control method is proposed that can provide transient performance similar to DTC with reduced torque pulsations at ...
... According to this novel concept of decoupling DTC is seen to be different from FOC and it has satisfied some advantages like simplicity and quick torque response [1:3]. In this paper, a control method is proposed that can provide transient performance similar to DTC with reduced torque pulsations at ...
MC320 WHY CHOOSE ASCOREL? WHY USE OUR SLI?
... SAFE LOAD INDICATOR SYSTEM The MC320 provides the operator with information he needs in order to make lifts within the crane’s operating limits. Primarily designed for mobile cranes, this system can be installed on virtually any crane used in any type of environment. It is installed and calibrated b ...
... SAFE LOAD INDICATOR SYSTEM The MC320 provides the operator with information he needs in order to make lifts within the crane’s operating limits. Primarily designed for mobile cranes, this system can be installed on virtually any crane used in any type of environment. It is installed and calibrated b ...
Electric Tricycle Project: Appropriate Mobility
... In some limited testing, the design was shown to be effective. Our main problem with it was that there wasn’t enough initial torque at slow speed. With this we, decided we would have to decrease our resistance, initially 1.7 ohms. When trying to decide on what resistance we should go for, we though ...
... In some limited testing, the design was shown to be effective. Our main problem with it was that there wasn’t enough initial torque at slow speed. With this we, decided we would have to decrease our resistance, initially 1.7 ohms. When trying to decide on what resistance we should go for, we though ...
Force measurement
... use of three transducers allowing for isostatism. The mechanical assemblies needed for such systems, often called transducer pyramids, must comply with specific requirements. The verification of concrete testing machines requires the use of a very specific force transducer called strain cylinder. On ...
... use of three transducers allowing for isostatism. The mechanical assemblies needed for such systems, often called transducer pyramids, must comply with specific requirements. The verification of concrete testing machines requires the use of a very specific force transducer called strain cylinder. On ...
Electric Tricycle Project: Appropriate Mobility
... In some limited testing, the design was shown to be effective. Our main problem with it was that there wasn’t enough initial torque at slow speed. With this we, decided we would have to decrease our resistance, initially 1.7 ohms. When trying to decide on what resistance we should go for, we though ...
... In some limited testing, the design was shown to be effective. Our main problem with it was that there wasn’t enough initial torque at slow speed. With this we, decided we would have to decrease our resistance, initially 1.7 ohms. When trying to decide on what resistance we should go for, we though ...
S31115120
... the torque and flux within a 60° band. In order to obtain more stable switching by using all six vectors within a sector, the flux trajectory should be divided into twelve sector instead of six sector. Thus by increasing the number of sector in conventional DTC we can reduce the torque fluctuations. ...
... the torque and flux within a 60° band. In order to obtain more stable switching by using all six vectors within a sector, the flux trajectory should be divided into twelve sector instead of six sector. Thus by increasing the number of sector in conventional DTC we can reduce the torque fluctuations. ...
Lecture #25
... manner that allows the combination to be treated as a mass moment of inertia term that can be combined with other mass moment of inertia terms in order to simplify the process of determining the amount of motor torque required to accelerate the ball slide where the acceleration requirements of the b ...
... manner that allows the combination to be treated as a mass moment of inertia term that can be combined with other mass moment of inertia terms in order to simplify the process of determining the amount of motor torque required to accelerate the ball slide where the acceleration requirements of the b ...
electrical drive
... (f) Control unit : It control the power modulator besides generating commands for the protection of the motor and power modulator. It usually operates at much lower voltage and power levels. Input command signal, which adjusts the operation of drive forms an input o the control unit apart from signa ...
... (f) Control unit : It control the power modulator besides generating commands for the protection of the motor and power modulator. It usually operates at much lower voltage and power levels. Input command signal, which adjusts the operation of drive forms an input o the control unit apart from signa ...
Direct Current Motors - Alfred State College intranet site
... By incrementing or decrementing Es the motor speed can be controlled. Variable speed by armature voltage control was first used in the early 1930s using a system involving a constant speed AC motor driving a DC generator. The generator's DC output was varied using a rheostat to vary the field excita ...
... By incrementing or decrementing Es the motor speed can be controlled. Variable speed by armature voltage control was first used in the early 1930s using a system involving a constant speed AC motor driving a DC generator. The generator's DC output was varied using a rheostat to vary the field excita ...
Effectively Using Pressure, Load, and Torque Sensors with Today`s
... The recognized SI unit of measure for force/load is the Newton (N). Load cells measure force directly and accurately. Strain gages are the measurement tools within the cell. The most critical mechanical component in any load cell or strain gage transducer is generally the structure (spring element). ...
... The recognized SI unit of measure for force/load is the Newton (N). Load cells measure force directly and accurately. Strain gages are the measurement tools within the cell. The most critical mechanical component in any load cell or strain gage transducer is generally the structure (spring element). ...
Some Examples that Use the FEM in PM Generators Analysis
... an electrical generator and control block. Because of the mechanical constrains, in most of the cases the rotational speed of turbines is low. Usual generators however have high nominal rotational speed (1000 rpm or higher) incompatible with the turbine’s rotational speed. One of the solutions is to ...
... an electrical generator and control block. Because of the mechanical constrains, in most of the cases the rotational speed of turbines is low. Usual generators however have high nominal rotational speed (1000 rpm or higher) incompatible with the turbine’s rotational speed. One of the solutions is to ...
Tuning the P700VC in Sens Vector and FVC
... Tuning the drive to the motor is extremely important. The purpose of Autotune is to identify the correct motor flux and stator resistance. This will ensure higher starting torque and better performance at low speed operation. An improperly tuned drive can cause the motor to exhibit instability at lo ...
... Tuning the drive to the motor is extremely important. The purpose of Autotune is to identify the correct motor flux and stator resistance. This will ensure higher starting torque and better performance at low speed operation. An improperly tuned drive can cause the motor to exhibit instability at lo ...
10 Application Information
... characteristics and mechanical construction, for use under service conditions other than usual or for use on a particular type of application (NEMA). Duty Cycle – The relationship between the operating and resting times or repeatable operation at different loads and/or speeds. Efficiency – Ratio of ...
... characteristics and mechanical construction, for use under service conditions other than usual or for use on a particular type of application (NEMA). Duty Cycle – The relationship between the operating and resting times or repeatable operation at different loads and/or speeds. Efficiency – Ratio of ...
Selectiving Electric Motors PowerPoin
... • Totally-Enclosed: no openings for circulation of outside air through motor – may use external fan – higher operating temperature ...
... • Totally-Enclosed: no openings for circulation of outside air through motor – may use external fan – higher operating temperature ...
Starting Time Calculation for Induction Motor
... the heavy applications requirement. Some are considered large even in comparison to the total capacity of large industrial power systems. Starting of such large motors can cause adverse effects to any locally connected load, other motors and also to buses, which are electrically remote from the poin ...
... the heavy applications requirement. Some are considered large even in comparison to the total capacity of large industrial power systems. Starting of such large motors can cause adverse effects to any locally connected load, other motors and also to buses, which are electrically remote from the poin ...
Static characteristics of a new doubly salient permanent magnet motor
... of cross-coupling between the PM flux and armature flux on inductances is firstly taken into account. The results indicate that the effect of the cross-coupling and the mutual inductance in the DSPM motor are significant and nonnegligible. Both the inductance-flux method and the flux-current diagram ...
... of cross-coupling between the PM flux and armature flux on inductances is firstly taken into account. The results indicate that the effect of the cross-coupling and the mutual inductance in the DSPM motor are significant and nonnegligible. Both the inductance-flux method and the flux-current diagram ...
A. Commutation Torque Ripple in the PAO Method
... An optimal current vector trajectory for the low torque ripple in the entire speed range was designed based on the analysis. The proposed sensorless drive method for the low torque ripple was implemented for automotive fan applications ...
... An optimal current vector trajectory for the low torque ripple in the entire speed range was designed based on the analysis. The proposed sensorless drive method for the low torque ripple was implemented for automotive fan applications ...
Direct Torque Control of 5-Phase 10/8 Switched
... advantages over other types of AC machines due to its simple and solid construction. The rotor has a simple laminated structure with neither permanent magnets nor rotor windings, and rotates by using the reluctance torque produced from magnetic saliency between stator poles and rotor poles. Thus, SR ...
... advantages over other types of AC machines due to its simple and solid construction. The rotor has a simple laminated structure with neither permanent magnets nor rotor windings, and rotates by using the reluctance torque produced from magnetic saliency between stator poles and rotor poles. Thus, SR ...
International Electrical Engineering Journal (IEEJ) Vol. 6 (2015) No.1, pp. 1716-1726
... PWM inverters and replacing DC motors and thyristor bridges in industries [1, 3, 5]. It has been seen that many researchers proposed various IM models with different power electronics devices based inverters and control the speed of the IM. But harmonics always creates problems in the currents, volt ...
... PWM inverters and replacing DC motors and thyristor bridges in industries [1, 3, 5]. It has been seen that many researchers proposed various IM models with different power electronics devices based inverters and control the speed of the IM. But harmonics always creates problems in the currents, volt ...
AC induction - final notes
... voltage controllers are normally used to provide the voltage control. The ac voltage controllers are very simple. However, the harmonic contents are high and the input PF of the controllers is low. They are used mainly in low-power applications, such as fans, blowers, and centrifugal pumps, where th ...
... voltage controllers are normally used to provide the voltage control. The ac voltage controllers are very simple. However, the harmonic contents are high and the input PF of the controllers is low. They are used mainly in low-power applications, such as fans, blowers, and centrifugal pumps, where th ...
Analysis of energy-saving structures of electric machines for
... In the paper, alternative technologies of electric machines for domestic appliances were discussed. Nowadays, domestic appliances are used on a mass scale. In most households, there are domestic appliances where electric machines are used. Commutator motors are generally used in domestic appliances ...
... In the paper, alternative technologies of electric machines for domestic appliances were discussed. Nowadays, domestic appliances are used on a mass scale. In most households, there are domestic appliances where electric machines are used. Commutator motors are generally used in domestic appliances ...
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.