phytron
... The phytron APS module is a high performance power stage for the operation of stepper motors up to 5 APEAK at 24 - 70 VDC with a shaft power up to 250 Watts. The APS module positions with an actual step resolution of 1/512 (102,400 positions per revolution with an encoder with a 200 stepper motor). ...
... The phytron APS module is a high performance power stage for the operation of stepper motors up to 5 APEAK at 24 - 70 VDC with a shaft power up to 250 Watts. The APS module positions with an actual step resolution of 1/512 (102,400 positions per revolution with an encoder with a 200 stepper motor). ...
Chapter 3. LOAD ELECTRICAL CHARACTERISTICS 3.1 Fixed
... the load, the voltage is constant The I-V "curve" is a straight venica1line on a currentvoltage coordinate scale. The vertical line extends from zero amps to some upper-rated ...
... the load, the voltage is constant The I-V "curve" is a straight venica1line on a currentvoltage coordinate scale. The vertical line extends from zero amps to some upper-rated ...
O A
... incorrect phase sequence. Internal fault conditions include insulation failures and mechanical failures. Should currents higher than normal circulates through the motor some damage will occur if these currents are not interrupted on time (Mason, 1967; Stevenson, 1982; Hodgkiss, 1981). High power ind ...
... incorrect phase sequence. Internal fault conditions include insulation failures and mechanical failures. Should currents higher than normal circulates through the motor some damage will occur if these currents are not interrupted on time (Mason, 1967; Stevenson, 1982; Hodgkiss, 1981). High power ind ...
comparison and analysis of three-level converters versus two
... propulsive equipment. Therefore, the most suitable types of drivers are those which excel in all or most important factors mentioned above [1], [2]. Main benefits of electric propulsion are, high overall efficiency, high availability, low operating costs, low maintenance, less installation and commi ...
... propulsive equipment. Therefore, the most suitable types of drivers are those which excel in all or most important factors mentioned above [1], [2]. Main benefits of electric propulsion are, high overall efficiency, high availability, low operating costs, low maintenance, less installation and commi ...
Aalborg Universitet Permanent Magnet Synchronous Motors
... Many reported measurement methods for determination of the nonlinear d, q inductances as functions of d, q currents are based on the steady-state motor equation with the back EMF pre-measured and assumed to be constant [6] ~ [8]. The steady-sate performance based measurement method requires a rotati ...
... Many reported measurement methods for determination of the nonlinear d, q inductances as functions of d, q currents are based on the steady-state motor equation with the back EMF pre-measured and assumed to be constant [6] ~ [8]. The steady-sate performance based measurement method requires a rotati ...
Date: - ibookfi.com
... suitable for one voltage range (see Table 1). The first part winding (2/3) on terminals 1-2-3 can be used for part winding start. After a time delay of 1 ± 0.1 seconds, the second part winding, the 1/3 winding on terminals 7-8-9 must be brought on line. The part winding motor can be regarded as two ...
... suitable for one voltage range (see Table 1). The first part winding (2/3) on terminals 1-2-3 can be used for part winding start. After a time delay of 1 ± 0.1 seconds, the second part winding, the 1/3 winding on terminals 7-8-9 must be brought on line. The part winding motor can be regarded as two ...
motors for copeland™ semi-hermetic compressors
... suitable for one voltage range (see Table 1). The first part winding (2/3) on terminals 1-2-3 can be used for part winding start. After a time delay of 1 ± 0.1 seconds, the second part winding, the 1/3 winding on terminals 7-8-9 must be brought on line. The part winding motor can be regarded as two ...
... suitable for one voltage range (see Table 1). The first part winding (2/3) on terminals 1-2-3 can be used for part winding start. After a time delay of 1 ± 0.1 seconds, the second part winding, the 1/3 winding on terminals 7-8-9 must be brought on line. The part winding motor can be regarded as two ...
A Prototype Controller for Variable Reluctance Motors
... solved empirically while in [ 11 the problem complexity has required an analytic approach. In [l] it was shown that, to minimize the maximum feeding voltage, it is necessary to feed simultaneously all motor phases (not only two). This requirement strongly complicates the design of the torque sharing ...
... solved empirically while in [ 11 the problem complexity has required an analytic approach. In [l] it was shown that, to minimize the maximum feeding voltage, it is necessary to feed simultaneously all motor phases (not only two). This requirement strongly complicates the design of the torque sharing ...
EL23829834
... redundancy. Parallel converter techniques can be employed to improve the performance of active power filters [10]–[13], uninterruptible power supplies (UPS) [14]–[16], fault tolerance of doubly fed induction generators [17], and three-phase drives [18], [19]. Usually the operation of converters in p ...
... redundancy. Parallel converter techniques can be employed to improve the performance of active power filters [10]–[13], uninterruptible power supplies (UPS) [14]–[16], fault tolerance of doubly fed induction generators [17], and three-phase drives [18], [19]. Usually the operation of converters in p ...
700` 54` 24 54 36 70”
... into low voltage direct current. The low voltage direct current is fed to an oscillator 96 comprising three high ...
... into low voltage direct current. The low voltage direct current is fed to an oscillator 96 comprising three high ...
IOSR Journal of Electrical and Electronics Engineering (IOSR-JEEE)
... Induction motors are widely used in industrial and domestic applications due to their simple construction, low cost, high robustness and higher efficiency. In the earlier days the induction motors are used for constant speed applications. With the revolution of high speed power semiconductor devises ...
... Induction motors are widely used in industrial and domestic applications due to their simple construction, low cost, high robustness and higher efficiency. In the earlier days the induction motors are used for constant speed applications. With the revolution of high speed power semiconductor devises ...
Sustainability Aspects of Energy Conversion in Modern High
... The utilization in railway electric traction of the induction motor with a squirrel-cage rotor became possible only in the conditions of supplying power with controlled variable frequency and r.m.s. ...
... The utilization in railway electric traction of the induction motor with a squirrel-cage rotor became possible only in the conditions of supplying power with controlled variable frequency and r.m.s. ...
REVIEW OF ENERGY SAVING TECHNIQUES FOR THREE PHASE
... copper losses are calculated. Next both losses are made equal at all the load conditions by varying the voltage and frequency to maximize the efficiency [2]. Design of induction motor with the proper selection of materials results in energy saving with increased investment cost. But using of this mo ...
... copper losses are calculated. Next both losses are made equal at all the load conditions by varying the voltage and frequency to maximize the efficiency [2]. Design of induction motor with the proper selection of materials results in energy saving with increased investment cost. But using of this mo ...
LEESON Basic Training
... fundamentals for the electric motor. In the late 1800’s the actual invention of the alternating current motor was made by Nikola Tesla, a Serb who had migrated to the United States. One measure of Tesla’s genius is that he was granted more than 900 patents in the electrical field. Before Tesla’s tim ...
... fundamentals for the electric motor. In the late 1800’s the actual invention of the alternating current motor was made by Nikola Tesla, a Serb who had migrated to the United States. One measure of Tesla’s genius is that he was granted more than 900 patents in the electrical field. Before Tesla’s tim ...
SyNCHRONOUS MOTOR PROTECTION SySTEM
... tripping on transients. Two modes of pullout protection are available, re-sync mode and ride-thru mode. These modes will be initiated if the lagging power factor drops below the programmed set point, or if a line current surge occurs which is above four times the motor full load current. Re-sync mod ...
... tripping on transients. Two modes of pullout protection are available, re-sync mode and ride-thru mode. These modes will be initiated if the lagging power factor drops below the programmed set point, or if a line current surge occurs which is above four times the motor full load current. Re-sync mod ...
G3540
... toward wind power generation. Conventionally, gridconnected cage rotor induction machines are used as wind generators at medium power level. When connected to the constant frequency network, the induction generator runs near synchronous speed drawing the magnetizing current from the mains, thereby r ...
... toward wind power generation. Conventionally, gridconnected cage rotor induction machines are used as wind generators at medium power level. When connected to the constant frequency network, the induction generator runs near synchronous speed drawing the magnetizing current from the mains, thereby r ...
Starting and control of slip-ring induction motors
... speeds) is of little consequence. In such starters, there is no control over the time of start or resistance in the circuit (torque at different speeds) during the start-up period. Liquid rotor starters are one type and are suitable only for light duties. For heavy loads, requiring specific torque v ...
... speeds) is of little consequence. In such starters, there is no control over the time of start or resistance in the circuit (torque at different speeds) during the start-up period. Liquid rotor starters are one type and are suitable only for light duties. For heavy loads, requiring specific torque v ...
Specification of an Electric Power System
... Step 3 – Speed Controller Specification ..............................................................18 Step 4 – Motor Selection .....................................................................................18 ...
... Step 3 – Speed Controller Specification ..............................................................18 Step 4 – Motor Selection .....................................................................................18 ...
Synchronous Machines
... Synchronous generators usually operate together (or in parallel), forming a large power system supplying electrical energy to the loads or consumers. For these applications synchronous machines are built in large units, their rating ranging from tens to hundreds of megawatts. For high-speed machines ...
... Synchronous generators usually operate together (or in parallel), forming a large power system supplying electrical energy to the loads or consumers. For these applications synchronous machines are built in large units, their rating ranging from tens to hundreds of megawatts. For high-speed machines ...
Motor Single-Phasing Voltage Unbalance
... Allowing a motor to reach and operate at a temperature 10°C above its maximum temperature rating will reduce the motor’s expected life by 50%. Operating at 10°C above this, the motor’s life will be reduced again by 50%. This reduction of the expected life of the motor repeats itself for every 10°C. ...
... Allowing a motor to reach and operate at a temperature 10°C above its maximum temperature rating will reduce the motor’s expected life by 50%. Operating at 10°C above this, the motor’s life will be reduced again by 50%. This reduction of the expected life of the motor repeats itself for every 10°C. ...
Electric motor
An electric motor is an electrical machine that converts electrical energy into mechanical energy. The reverse of this would be the conversion of mechanical energy into electrical energy and is done by an electric generator.In normal motoring mode, most electric motors operate through the interaction between an electric motor's magnetic field and winding currents to generate force within the motor. In certain applications, such as in the transportation industry with traction motors, electric motors can operate in both motoring and generating or braking modes to also produce electrical energy from mechanical energy.Found in applications as diverse as industrial fans, blowers and pumps, machine tools, household appliances, power tools, and disk drives, electric motors can be powered by direct current (DC) sources, such as from batteries, motor vehicles or rectifiers, or by alternating current (AC) sources, such as from the power grid, inverters or generators. Small motors may be found in electric watches. General-purpose motors with highly standardized dimensions and characteristics provide convenient mechanical power for industrial use. The largest of electric motors are used for ship propulsion, pipeline compression and pumped-storage applications with ratings reaching 100 megawatts. Electric motors may be classified by electric power source type, internal construction, application, type of motion output, and so on.Electric motors are used to produce linear or rotary force (torque), and should be distinguished from devices such as magnetic solenoids and loudspeakers that convert electricity into motion but do not generate usable mechanical powers, which are respectively referred to as actuators and transducers.