specifications
... Split Capacitor) ball bearing motor operating at 3250 RPM or 50Hz operates at 2750 RPM. The internal thermal overload will reset automatically. The motor shall operate in an oil bath and be continuous duty rated with a service factor of 1.15 at 60Hz and 1.00 at 50Hz. The stator (windings) shall be c ...
... Split Capacitor) ball bearing motor operating at 3250 RPM or 50Hz operates at 2750 RPM. The internal thermal overload will reset automatically. The motor shall operate in an oil bath and be continuous duty rated with a service factor of 1.15 at 60Hz and 1.00 at 50Hz. The stator (windings) shall be c ...
Chapter 4-AMSC
... The nonlinear relationship between converter input currents and its terminal voltages is I f (V) – I & V are harmonic vectors If the harmonic contents are small, one may linearize the dynamic relations about the base operating point and ...
... The nonlinear relationship between converter input currents and its terminal voltages is I f (V) – I & V are harmonic vectors If the harmonic contents are small, one may linearize the dynamic relations about the base operating point and ...
Low Voltage Ride Through Characterization of Wind Energy
... The main objective of electric power utilities is to operate their electric systems in a safe, secure, efficient and economical manner. An important challenge for the safe operation of the Egyptian electric grid is the increasing penetration of renewable energy generation, enforced through the 2007 ...
... The main objective of electric power utilities is to operate their electric systems in a safe, secure, efficient and economical manner. An important challenge for the safe operation of the Egyptian electric grid is the increasing penetration of renewable energy generation, enforced through the 2007 ...
III. Proposed controller design
... control methods based on PI-R controller were widely used in DFIG system for operating in harmonically distorted or unbalanced stator voltage conditions. In this paper, a new control system is proposed for keeping DFIG-based wind turbine connected to the grid in worst NonIdeal grid voltage condition ...
... control methods based on PI-R controller were widely used in DFIG system for operating in harmonically distorted or unbalanced stator voltage conditions. In this paper, a new control system is proposed for keeping DFIG-based wind turbine connected to the grid in worst NonIdeal grid voltage condition ...
power_point1..metal_detector..final1_
... Pulse Induction (PI) metal detectors are sending repeated pulses of electrical current to the search coil, producing a magnetic field. The coil transmits a pulse toward the ground, generating an answering pulse from the target object. A sampling circuit measures the pulse and sends it to an integrat ...
... Pulse Induction (PI) metal detectors are sending repeated pulses of electrical current to the search coil, producing a magnetic field. The coil transmits a pulse toward the ground, generating an answering pulse from the target object. A sampling circuit measures the pulse and sends it to an integrat ...
WARD LEONARD CONTROL SYSTEM
... Mr. Ward Leonard was born in 1861 in Cincinnati, USA. He graduated from the Massachusetts institute of technology at age of 22. A year later he became associated with Thomas A. Edison when he was joined a group of four engineers to introduce the new Edison power-station system. He was appointed supe ...
... Mr. Ward Leonard was born in 1861 in Cincinnati, USA. He graduated from the Massachusetts institute of technology at age of 22. A year later he became associated with Thomas A. Edison when he was joined a group of four engineers to introduce the new Edison power-station system. He was appointed supe ...
NJAA 2015 Study Guide
... • An anti-seize compound is used on the threads of fasteners in some applications. The purpose of the compound depends upon the application. It can prevent galling of mating surfaces - such compounds are frequently used with stainless steel fasteners to prevent this effect from occurring. In some ap ...
... • An anti-seize compound is used on the threads of fasteners in some applications. The purpose of the compound depends upon the application. It can prevent galling of mating surfaces - such compounds are frequently used with stainless steel fasteners to prevent this effect from occurring. In some ap ...
the contribution of double-fed wind farms to transient voltage and
... ability to resist disturbance of the grid through the coordination control between wind farms and the grid. Currently, the transient control technology of wind farms is at a low level in that when grids get disturbed or have short circuit faults, wind farms can hardly provide reactive power support ...
... ability to resist disturbance of the grid through the coordination control between wind farms and the grid. Currently, the transient control technology of wind farms is at a low level in that when grids get disturbed or have short circuit faults, wind farms can hardly provide reactive power support ...
HIGH PRECISION TORQUE MEASUREMENT SYSTEMS IN DYNAMIC AND STATIC APPLICATIONS
... The temperature dependency of the characteristic curve and the linearity of the transducers are regarded as properties that can be compensated. These effects can be corrected by taking relevant action in the hardware or by suitable algorithms in the software. Hardware solutions are preferable here t ...
... The temperature dependency of the characteristic curve and the linearity of the transducers are regarded as properties that can be compensated. These effects can be corrected by taking relevant action in the hardware or by suitable algorithms in the software. Hardware solutions are preferable here t ...
PART 1 – GENERAL - Hammond Power Solutions
... 3rd, 9th & 15th harmonics and other zero sequence currents shall be treated within the secondary windings through cancellation of the zero sequence fluxes. Simply trapping these currents in the delta primary winding is NOT acceptable. For 5th, 7th, 17th & 19th harmonics provide the appropriate prima ...
... 3rd, 9th & 15th harmonics and other zero sequence currents shall be treated within the secondary windings through cancellation of the zero sequence fluxes. Simply trapping these currents in the delta primary winding is NOT acceptable. For 5th, 7th, 17th & 19th harmonics provide the appropriate prima ...
The latest Soft-Starter Technology
... Ease of pump configuration Provides control without the use of sensors or feedback devices ...
... Ease of pump configuration Provides control without the use of sensors or feedback devices ...
Aalborg Universitet Abulanwar, El-Saye Mohamed; Chen, Zhe; Iov, Florin
... 25-30% that allows for independent control of active and reactive power [4]. Nevertheless, DFIG is sensitive to the grid faults and thus prone to various serious issues due to the direct connection of its stator to the grid [2]-[4]. Subsequent to a fault, the rotor side and grid side converters, RSC ...
... 25-30% that allows for independent control of active and reactive power [4]. Nevertheless, DFIG is sensitive to the grid faults and thus prone to various serious issues due to the direct connection of its stator to the grid [2]-[4]. Subsequent to a fault, the rotor side and grid side converters, RSC ...
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.