Control of DFIG-WT under unbalanced grid voltage conditions
... The P* and Q* values correspond to the desired output at the stator windings. However the electrical generator itself takes a certain value of Q and P, due to their magnetic fields and internal losses, which are not being considered, as far as they are unknown most of the times. Therefore, it is als ...
... The P* and Q* values correspond to the desired output at the stator windings. However the electrical generator itself takes a certain value of Q and P, due to their magnetic fields and internal losses, which are not being considered, as far as they are unknown most of the times. Therefore, it is als ...
SHURflo Close-Coupled Electric Motor
... 12. The motor is designed to be used in a clean, dry location with access to an adequate supply of cooling air. Ambient temperature around the motor should not exceed 104ºF (40ºC). For outdoor installations, motor must be protected by a cover that does not block airflow to and around the motor. This ...
... 12. The motor is designed to be used in a clean, dry location with access to an adequate supply of cooling air. Ambient temperature around the motor should not exceed 104ºF (40ºC). For outdoor installations, motor must be protected by a cover that does not block airflow to and around the motor. This ...
AC and DC Drives for Oil Drilling
... · Load balance (Err Less than 10 %) Small Power Supply Normally, drilling machines operate in remote areas which have no power networks. Power is supplied from a separate diesel generator. This poses two limitations: first, power is limited; second, power cannot be regenerated. Solutions: · Constant ...
... · Load balance (Err Less than 10 %) Small Power Supply Normally, drilling machines operate in remote areas which have no power networks. Power is supplied from a separate diesel generator. This poses two limitations: first, power is limited; second, power cannot be regenerated. Solutions: · Constant ...
Primatics, Inc
... 2) Introduction – About the MDM2200 Family This manual is intended for use by application engineers and technicians involved in using Primatics positioning equipment. The MDM2200 Motor Drive Module acts as an intermediary between a National Instruments motion controller and positioning stage(s).The ...
... 2) Introduction – About the MDM2200 Family This manual is intended for use by application engineers and technicians involved in using Primatics positioning equipment. The MDM2200 Motor Drive Module acts as an intermediary between a National Instruments motion controller and positioning stage(s).The ...
Capturing Generator Rotor Angle and Field Quantities
... justifications for this project include the following research goals [1]: • Acquiring field quantities for generator model validation. • Analyzing the interaction of mechanical and electrical quantities. • Estimating generator parameters [2] [3]. • Continuous condition assessment. • Developing real- ...
... justifications for this project include the following research goals [1]: • Acquiring field quantities for generator model validation. • Analyzing the interaction of mechanical and electrical quantities. • Estimating generator parameters [2] [3]. • Continuous condition assessment. • Developing real- ...
Kulraj Kaur (800941016)
... Chapter 1 INTRODUCTION ................................................................................................... 1 ...
... Chapter 1 INTRODUCTION ................................................................................................... 1 ...
THE MODELLING OF THE ELECTROMECHANICAL MULTILAYER
... B4.Flexural-flexural double –mode bar. B5. Mode annular plate actuator. The ultrasonic micromotors and microactuators advantages include [1] : - both high torque and high efficiency at low speed; - the possibility of direct drive; -ability to maintain its own position; - good control characteristics ...
... B4.Flexural-flexural double –mode bar. B5. Mode annular plate actuator. The ultrasonic micromotors and microactuators advantages include [1] : - both high torque and high efficiency at low speed; - the possibility of direct drive; -ability to maintain its own position; - good control characteristics ...
Motor Mounted Components - Altra Literature Portal
... Consequently, the voltage spikes induced at switch-off can reach hazardous levels with relatively high coil voltages. For this reason, a varistor is included in the circuit for all brakes with voltages greater than 24 V. This varistor is solely intended to protect the electromagnet coil; it is not i ...
... Consequently, the voltage spikes induced at switch-off can reach hazardous levels with relatively high coil voltages. For this reason, a varistor is included in the circuit for all brakes with voltages greater than 24 V. This varistor is solely intended to protect the electromagnet coil; it is not i ...
Technical Manual
... Overview ................................................................................................................................ 7 ...
... Overview ................................................................................................................................ 7 ...
Losses in High Speed Permanent Magnet Machines Used
... 40,000 rpm. One of the key enabling technologies for microturbines is the integral high speed electrical machines operating at the same speeds as the turbines, eliminating mechanical gearboxes. The result is a very compact high efficiency system that allows for ease of onsite installation. High spee ...
... 40,000 rpm. One of the key enabling technologies for microturbines is the integral high speed electrical machines operating at the same speeds as the turbines, eliminating mechanical gearboxes. The result is a very compact high efficiency system that allows for ease of onsite installation. High spee ...
SB800 - Marathon Motors Basic Training Manual
... energy losses and heat in the motor. Rotors for AC motors are heat treated to separate the aluminum bars from the rotor’s magnetic laminations. Shaft and bearing tolerances must be held to ten thousandths of an inch. The whole structure of the motor must be rigid to reduce vibration and noise. The s ...
... energy losses and heat in the motor. Rotors for AC motors are heat treated to separate the aluminum bars from the rotor’s magnetic laminations. Shaft and bearing tolerances must be held to ten thousandths of an inch. The whole structure of the motor must be rigid to reduce vibration and noise. The s ...
Starting system
... The starter motor is a DC motor that is series wound. It produces greater torques at low speed. The electrical energy required for starting is generally drawn from the battery. An armature is positioned inside a powerful magnetic field crated by either permanent magnets or field coils. When current ...
... The starter motor is a DC motor that is series wound. It produces greater torques at low speed. The electrical energy required for starting is generally drawn from the battery. An armature is positioned inside a powerful magnetic field crated by either permanent magnets or field coils. When current ...
Supplemental Protection (Fuses Protectors)
... Branch circuit overcurrent protective devices (OCPD) can be used everywhere OCPD are used, from protection of motors and motor circuits and group motor circuits, to protection of distribution and utilization equipment. Supplemental OCPD can only be used where proper protection is already being provi ...
... Branch circuit overcurrent protective devices (OCPD) can be used everywhere OCPD are used, from protection of motors and motor circuits and group motor circuits, to protection of distribution and utilization equipment. Supplemental OCPD can only be used where proper protection is already being provi ...
CHRISTU JYOTI INSTITUTE OF TECHNOLOGY & SCIENCE LABORATORY MANUAL ELECTRICAL MACHINES II
... understanding correctly the type of the experiment to be performed: no-load test or fullload test, the maximum current expected in the circuit and accordingly use that fuserating.(While an over-rated fuse will damage the equipment and other instruments like ammeters and watt-meters in case of over l ...
... understanding correctly the type of the experiment to be performed: no-load test or fullload test, the maximum current expected in the circuit and accordingly use that fuserating.(While an over-rated fuse will damage the equipment and other instruments like ammeters and watt-meters in case of over l ...
Document
... Squirrel cage induction motors always have different numbers of slots in stator and rotor in order to suppress noise and vibration, and to provide a uniform generation of torque. A stator and rotor slot pitch can look as shown in Fig. 1. ...
... Squirrel cage induction motors always have different numbers of slots in stator and rotor in order to suppress noise and vibration, and to provide a uniform generation of torque. A stator and rotor slot pitch can look as shown in Fig. 1. ...
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.