CHAPTER 6. CONCLUSIONS. FURTHER WORK. -
... Experimental results, which match perfectly with the real simulations, have been obtained showing the validity of the entire research. Therefore, the idea of reducing the torque ripple, which is supposed to be one of the disadvantages of the classical DTC, by means of a fuzzy logic modulation, has b ...
... Experimental results, which match perfectly with the real simulations, have been obtained showing the validity of the entire research. Therefore, the idea of reducing the torque ripple, which is supposed to be one of the disadvantages of the classical DTC, by means of a fuzzy logic modulation, has b ...
PNIMNiPE_nr56
... b) to avoid appearance of torque originating in inaccurate crankshaft fitting demands of very high quality of mechanical treatment should be secured; c) application of modified system of torque reception from rolling rotor is necessary to assure smooth shaft rotation. d) simple “one key per phase dr ...
... b) to avoid appearance of torque originating in inaccurate crankshaft fitting demands of very high quality of mechanical treatment should be secured; c) application of modified system of torque reception from rolling rotor is necessary to assure smooth shaft rotation. d) simple “one key per phase dr ...
Holt Physics--Chapter 8 Rotational Equilibrium and Dynasmics
... 2. HOWEVER, an object can still rotate while at equilibrium! How is this possible? 3. To truly be at equilibrium an object must also have a net torque of zero (known as the second condition for equilibrium) III. Section 8-3: Rotational Dynamics A. Newton's second law for rotation 1. There is a relat ...
... 2. HOWEVER, an object can still rotate while at equilibrium! How is this possible? 3. To truly be at equilibrium an object must also have a net torque of zero (known as the second condition for equilibrium) III. Section 8-3: Rotational Dynamics A. Newton's second law for rotation 1. There is a relat ...
Document
... new value of Va. This process of voltage Eg reduction continues until the developed torque restores to the original value (or until the output power reaches the power demand at a lower speed). The developed torque builds up and the average current Ia settles to the new value at a lower speed. ...
... new value of Va. This process of voltage Eg reduction continues until the developed torque restores to the original value (or until the output power reaches the power demand at a lower speed). The developed torque builds up and the average current Ia settles to the new value at a lower speed. ...
Horsepower and Torque Outline
... More AMPS means larger wire The types of electronic components Adaptation of motors for use in your robot DC brushed motors are designed to operate within a particular voltage range Battery Power Shifts Discharge or loose power over a period of time when under load May be above 12 volts ...
... More AMPS means larger wire The types of electronic components Adaptation of motors for use in your robot DC brushed motors are designed to operate within a particular voltage range Battery Power Shifts Discharge or loose power over a period of time when under load May be above 12 volts ...
Energy saving motors
... Pole-changing motors are designed for drives with constant torque characteristics and drives with quadratically rising torque because of the torque characteristics of the working machine. The motors can be calculated only for one rated voltage, for example 230 V, 400 V or 690 V. They are generally d ...
... Pole-changing motors are designed for drives with constant torque characteristics and drives with quadratically rising torque because of the torque characteristics of the working machine. The motors can be calculated only for one rated voltage, for example 230 V, 400 V or 690 V. They are generally d ...
mr08T
... even a hammer acts like a part of a lever, with the elbow of the person swinging the hammer as the fulcrum. Well designed tools can make a job much easier, and safer. a. Why is it easier to undo a tight screw with a thick handled screwdriver? b. Sometimes mechanics put a bit of pipe over the handle ...
... even a hammer acts like a part of a lever, with the elbow of the person swinging the hammer as the fulcrum. Well designed tools can make a job much easier, and safer. a. Why is it easier to undo a tight screw with a thick handled screwdriver? b. Sometimes mechanics put a bit of pipe over the handle ...
Engine Speed Governors
... Many applications easily accept some speed droop which means a less costly and complex governor can be used, even if the genset will be paralleled with other units. Isochronous - These units offer 0% droop, i.e. constant engine speed from no load to full load. This capability is often required on ge ...
... Many applications easily accept some speed droop which means a less costly and complex governor can be used, even if the genset will be paralleled with other units. Isochronous - These units offer 0% droop, i.e. constant engine speed from no load to full load. This capability is often required on ge ...
One range, one result
... Gearmotor with a 6-pole (960 rev/min) motor, having a 48 rev/ min output speed has a 20:1 reduction ratio. Chain drive using two 23 tooth sprockets has a 1:1 ratio. Centre Distance Calculation Belt length, given pulley diameters and centre distance: ...
... Gearmotor with a 6-pole (960 rev/min) motor, having a 48 rev/ min output speed has a 20:1 reduction ratio. Chain drive using two 23 tooth sprockets has a 1:1 ratio. Centre Distance Calculation Belt length, given pulley diameters and centre distance: ...
Permanent-magnet motor-generator
... With the DCBC, current “gain” is inverse of Voltage gain (G) Boost battery Voltage to motor ; otherwise boost MG Voltage Say “half resistance (Rh)” resides up & downstream of DCBC Solve for Voltage at node “a” to get battery current by mode Efficiency has trends shown earlier, but Vs. ne ≡ Gmkw/(Gbe ...
... With the DCBC, current “gain” is inverse of Voltage gain (G) Boost battery Voltage to motor ; otherwise boost MG Voltage Say “half resistance (Rh)” resides up & downstream of DCBC Solve for Voltage at node “a” to get battery current by mode Efficiency has trends shown earlier, but Vs. ne ≡ Gmkw/(Gbe ...
DC Motors 2
... b) The power loss due to the resistance of the armature c) The power developed d) The back EMF (EA) e) The efficiency assuming no mechanical power loss f) Draw a power conversion diagram and fill-in the values for power in, electrical power loss, power developed, mechanical power loss and power out. ...
... b) The power loss due to the resistance of the armature c) The power developed d) The back EMF (EA) e) The efficiency assuming no mechanical power loss f) Draw a power conversion diagram and fill-in the values for power in, electrical power loss, power developed, mechanical power loss and power out. ...
MEEPP 202 Electric Drives
... efficiency occurs at 70% of full load. Determine the continuous rating of the motor. (10 marks) OR 2. (a) A drive has following parameters :J=10kg-m2,T=(100-0.1N)Nm Passive load torque, Tl=(0.05N)Nm , where N is the speed in rpm. Initially the drive is operating in steady state . When it is reversed ...
... efficiency occurs at 70% of full load. Determine the continuous rating of the motor. (10 marks) OR 2. (a) A drive has following parameters :J=10kg-m2,T=(100-0.1N)Nm Passive load torque, Tl=(0.05N)Nm , where N is the speed in rpm. Initially the drive is operating in steady state . When it is reversed ...
Tests with single two-wire pendulum
... A prediction of this model is as follows. We have measured the magnitude of the residual tilts on the two-wire pendulum (T080033, T080044). Knowing the “d” distance and mass of that pendulum we can calculate the associated torque that must be present to give the residual tilt. We can then express th ...
... A prediction of this model is as follows. We have measured the magnitude of the residual tilts on the two-wire pendulum (T080033, T080044). Knowing the “d” distance and mass of that pendulum we can calculate the associated torque that must be present to give the residual tilt. We can then express th ...
ALL INDIA TERII SCHLORSHIP EXAM - 2013 Q1
... d. All the above Q38. Quality control results in a. Economy b. Less maintenance c. Rational use of material d. All the above Q39. Mixing of ingredients can be done by a. Manually b. Batch mixers c. Truck mounted d. All the above Q40. For machine mixing the mixing time should not be less than a. 2 mi ...
... d. All the above Q38. Quality control results in a. Economy b. Less maintenance c. Rational use of material d. All the above Q39. Mixing of ingredients can be done by a. Manually b. Batch mixers c. Truck mounted d. All the above Q40. For machine mixing the mixing time should not be less than a. 2 mi ...
Single Phase Motors
... o However, if the rotor is given an initial rotation in either direction, the torque due to the rotating field acting in the direction of initial rotation coil will be more than that due to the other rotating field and the motor will develop a net positive torque in the same direction as the initial ...
... o However, if the rotor is given an initial rotation in either direction, the torque due to the rotating field acting in the direction of initial rotation coil will be more than that due to the other rotating field and the motor will develop a net positive torque in the same direction as the initial ...
Terms and Definitions - Callan Technology Ltd.
... current in specific armature coils depending on the angular position of the armature. In this manner the brushes steer (commutate) the motor current into the armature so that optimum torque is produced. The permanent magnet field is set into the outer, non-rotating stator (yoke). The stator complete ...
... current in specific armature coils depending on the angular position of the armature. In this manner the brushes steer (commutate) the motor current into the armature so that optimum torque is produced. The permanent magnet field is set into the outer, non-rotating stator (yoke). The stator complete ...
Curso sobre sistemas trifsicos
... distance. Torque, like work, is measured is pound-feet (lbft). However, torque, unlike work, may exist even though no movement occurs. To calculate torque, apply this formula: T=FxD T = torque (in lb-ft) F = force (in lb) D = distance (in ft) Example: What is the torque produced by a 60 lb force pus ...
... distance. Torque, like work, is measured is pound-feet (lbft). However, torque, unlike work, may exist even though no movement occurs. To calculate torque, apply this formula: T=FxD T = torque (in lb-ft) F = force (in lb) D = distance (in ft) Example: What is the torque produced by a 60 lb force pus ...
Question Bank Lab
... 50. What are the preferable firing angle ranges for different experiment kits in the lab? 51. What are motor ratings for different experiment kits in the lab? 52. What are different Power Electronic converters used for different experiments in the lab? 53. What is the load range for which AC voltage ...
... 50. What are the preferable firing angle ranges for different experiment kits in the lab? 51. What are motor ratings for different experiment kits in the lab? 52. What are different Power Electronic converters used for different experiments in the lab? 53. What is the load range for which AC voltage ...
About Disc Magnet Motors
... rotor, a thin disc or rare earth magnet material. Portescap’s unique design allows for axial magnetizing with a high number of poles, ...
... rotor, a thin disc or rare earth magnet material. Portescap’s unique design allows for axial magnetizing with a high number of poles, ...
Session 9.2 J. Ritchey Improving Generators and Motors Using
... Converts existing rotating machines into a multitude of different machines, all with different operating characteristics. Transitions between operating conditions seamlessly in real time and under load. DCM accommodates high coil count - electronic gearing (reduction or removal of gearbox) Provides ...
... Converts existing rotating machines into a multitude of different machines, all with different operating characteristics. Transitions between operating conditions seamlessly in real time and under load. DCM accommodates high coil count - electronic gearing (reduction or removal of gearbox) Provides ...
4 Parallel Operation of Synchronous Generators
... control is based on space phasor theory, where the electrical quantities of the machines (such as current, voltage, and flux linkage) are treated as rotating vectors. Those vectors are based on some coordinate system. The coordinate system may be firm, fixed to the stator or it may rotate within the ...
... control is based on space phasor theory, where the electrical quantities of the machines (such as current, voltage, and flux linkage) are treated as rotating vectors. Those vectors are based on some coordinate system. The coordinate system may be firm, fixed to the stator or it may rotate within the ...
AsynMotor
... ratio shoud be optimized for low torque ripple, lower current and higher efficiency. Euler's theory says that a rotating magnetic filed in airgap of electric motor can be obtained if auxilary and main windings ...
... ratio shoud be optimized for low torque ripple, lower current and higher efficiency. Euler's theory says that a rotating magnetic filed in airgap of electric motor can be obtained if auxilary and main windings ...
7154/7156 Variable Speed Drives
... Drive frequency The speed at which IGBTs are switched on and off is called the carrier frequency or switch frequency. The higher the switch frequency, the ...
... Drive frequency The speed at which IGBTs are switched on and off is called the carrier frequency or switch frequency. The higher the switch frequency, the ...
Motors and Actuation
... – Stator windings are fed alternating current – Iron rotor “squirrel cage” has electric fields induced into it – Constantly lags slightly behind the changing field, causing torque ...
... – Stator windings are fed alternating current – Iron rotor “squirrel cage” has electric fields induced into it – Constantly lags slightly behind the changing field, causing torque ...
Load Bank Testing
... sharing. Paralleled sets must share both real power (KW) with reactive power (KVARS) which requires correct adjustment of the governor and voltage regulator controls. ...
... sharing. Paralleled sets must share both real power (KW) with reactive power (KVARS) which requires correct adjustment of the governor and voltage regulator controls. ...
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.