stator


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Related to stator: stator coil

stator:

see generatorgenerator,
in electricity, machine used to change mechanical energy into electrical energy. It operates on the principle of electromagnetic induction, discovered (1831) by Michael Faraday.
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; motor, electricmotor, electric,
machine that converts electrical energy into mechanical energy. When an electric current is passed through a wire loop that is in a magnetic field, the loop will rotate and the rotating motion is transmitted to a shaft, providing useful mechanical work.
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.

Stator

 

(1) In reaction turbines, a grating installed ahead of the runner of a hydraulic turbine; it usually consists of rotatable profile blades. The rotatable blades make possible adjustment of the flow of water through the turbine. Such adjustments are necessary to produce an optimum direction of the water stream at the vanes of the runner and thus to improve the efficiency of the turbine under abnormal operating conditions.

(2) In vane pumps, the stator consists of stationary vanes and is located behind the impeller (with respect to the direction of flow) in such a way as to provide the most favorable (axial) outflow of the fluid.


Stator

 

in electric machinery, the stationary part of a machine that serves as both a magnetic circuit and a supporting member.

A stator consists of a core and a frame. The core is made up of sheets of electrical steel; the sheets, which are 0.35–0.5 mm thick and insulated with varnish, are formed into stacks and fastened in the cast or welded frame. Stator windings fit into slots made in the core. To avoid substantial eddy currents and associated losses, the conductor of the stator winding is made up of several strands electrically in parallel. In high-power machines, these strands are braided (transposed). In linear motors, the core of the stator is unrolled into a line.

REFERENCE

Kostenko, M. P., and L. M. Piotrovskii. Elektricheskie mashiny, 3rd ed., parts 1–2. Leningrad, 1972–73.

stator

[′stād·ər]
(electricity)
The portion of a rotating machine that contains the stationary parts of the magnetic circuit and their associated windings.
(mechanical engineering)
A stationary machine part in or about which a rotor turns.

stator

i. Stationary diffuser vanes in an axial-flow compressor, which convert the kinetic energy into pressure energy. See stator blade.
ii. The stationary part of an electrical machine such as an alternator or a motor.
iii. The discs in multiple-disc brakes that are keyed to the axle and do not rotate. See segmentedrotor brake.
References in periodicals archive ?
Finite element analysis (FEA) is used to examine the stator copper loss and efficiency between two stator models.
The rotor also expands when heated, and thus decreases the clearance between the stator and rotor.
There are two designs for direct-excitation which is Design [1] using continuous harmonic current superimposed in stator current, and Design [2] using pulse harmonics mixed in stator current.
The voltage and current signals are inputs to an accurate motor model which produces an exact actual value of stator flux and torque every 25 microseconds.
The secondary stator field can be created by the primary stator coil inducing phase shifted currents and magnetic fields in a secondary stator winding or can be created by a secondary stator coil powered in series with a capacitor to create a phase shift in the current flowing through that winding.
In this paper, we consider different forms of SAGE, respectively, caused by rotor offset, stator deformation, and the mixed condition of these two, as indicated in Figure 2.
Space vector of stator voltage on three-phase coordinate system ABC can be:
It can evaluate the magnetic losses generated in the stator, taking into account the lamination's geometry and the magnetic field rotating component.
Using the coordinate's equivalent transformation method, the DFIG's stator side complex power in an unbalanced power grid can be expressed as follows
FEM is used to build the complex geometry of the model, and the type of materials is selected to specify the stator windings, rotor bars and iron cores.