designing these electric traction motors. In this section, the AC and DC losses are analysed in Motor-CAD for increasing number of winding layers. Fig. 7 shows the radial view of the machine being studied, it is a 36-slot/6-pole IPM for electric vehicle applications. In general the …
Read MoreAnswer (1 of 3): Pole shoes are the part of magnetic poles nearest to the armature core: (i) Pole shoes support the pole windings not to fall off their positions. (ii) it also facilitates the provision of an appropriate air gap over armature core so that appropriate flux density and flux wave s...
Read MoreA field coil is an electromagnet used to generate a magnetic field in an electro-magnetic machine, typically a rotating electrical machine such as a motor or generator.It consists of a coil of wire through which a current flows. In a rotating machine, the field coils are wound on an iron magnetic core which guides the magnetic field lines. The magnetic core is in two parts; a stator which is ...
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Read MoreA Yoke. Poles. Field windings. Armature windings. Commutator. Brushes. A stator is the static part of the DC machine that houses the field windings and receives the supply. A rotor is the rotating part of the DC machine that brings about the mechanical rotations. All these parts put together make up the total construction of a DC motor.
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Read MoreElectric motor - Electric motor - Permanent-magnet motors: The magnetic field for a synchronous machine may be provided by using permanent magnets made of neodymium-boron-iron, samarium-cobalt, or ferrite on the rotor. In some motors, these magnets are mounted with adhesive on the surface of the rotor core such that the magnetic field is radially directed across the air gap.
Read MoreThe electric machine is fed by an electronic circuit for vectorial control (in amplitude and phase) of the current feeding the electric windings of the stator. The rotor may be massive with salient poles, and then the members of non-ferromagnetic material are little cavities hollowed in the surfaces of …
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Read MoreIt uses to protect the internal parts of the DC machine and gives mechanical support to the poles. The yoke provides a return path for magnetic flux. In the yoke, the laminations are not required, but the modern machines uses the laminations in yoke. 2) Poles and Pole shoe: The pole core use to provide housing to the field winding.
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Read MoreFigure 1: Cross-sections of synchronous machines. As shown in Figure 1, the rotor can be of either the salient-pole type or the cylindrical (non-salient-pole) type. The machine used for this experiment is somewhat salient, but the impact of the salient is negligible. In either case, the flux of the field is fairly uniformly distributed throughout
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Read MorePole pieces for dynamo electric machines, and particularly for small dynamo electric machines of the fractional horsepower type, have been made by deforming a blank to make a main pole, and then shape four sides pole shoes or end pieces. This type of manufacture requires subsequent cutting or shearing to shape the outer contour of the pole pieces.
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Read MoreThe magnet is made of a special alloy and has high power and indefinite life. Most industrial permanent magnets sit within a carrier. Alignment of the poles determines the state of the magnet (whether it is on or off). In operation, these poles are physically moved to activate and de-activate the permanent magnet.
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Read MoreAnd in reduced systems, the mutual phase displacement is considered as. α ph = ∏/m = 180 0 /m. When we consider an electrical machine, which has m phases, p pole pairs, N slots, and n layers, the winding design of this machine is known through knowing about number of wound coils in each phase, calculating which coils have varied phases 'g', and it is termed as
Read MoreThe stator then is the stationary part of the AC motor. The rotor is the rotating electrical component. It also consists of a group of electro-magnets arranged around a cylinder, with the poles facing toward the stator poles. The rotor is located inside the stator and is mounted on the AC motor's shaft. The term "rotor" is derived from the word ...
Read MoreA utility pole is a column or post used to support overhead power lines and various other public utilities, such as electrical cable, fiber optic cable, and related equipment such as transformers and street lights.It can be referred to as a transmission pole, telephone pole, telecommunication pole, power pole, hydro pole, telegraph pole, or telegraph post, depending on its application.
Read More2.a) Parts of an electric motor: There are many kinds of electric motors but in general they have some similar parts. Each motor has a stator, which may be a permanent magnet (as shown in the 'universal motor' above) or wound insulted wires (an electromagnet like in the photo above-right).The rotor sits the middle (most of the time), and is subject to the magnetic field created by the stator.
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Read MoreView DC Machines Supplementary Problems.doc from EEE 123 at University of Siant Louis, Tuguegarao. DC Machines Supplementary Problems 1. The field poles are made of …
Read MoreElectric Machine Parameter and Testing — Part 2. Measure and record A-B, B-C, C-A line-line resistances and inductances. Hipot and surge test the stator after varnish at 1800VAC, max current leakage 5mA Before and after varnish, perform corona test (partial discharge) with pulse up to but not exceeding 3000V.
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Read MorePoles of identical dimensions are assembled by stacking laminations to the required length. A salient pole synchronous machine has a non-uniform air gap. The air gap is minimized under the pole centers and it is maximum in between the poles. They are constructed for medium and low speeds as they have a large number of poles.
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Read MoreA structural pole of an old machine is made from grade 20 gray iron (S ut = 20 ksi and S uc = 60 ksi), the machine is repurposed in way that the pole supports a 2000-lb compressive load and a 500 ft-lb torque. Both loads are static. What is the design factor of the pole, if the pole has the dimensions of a 2-in schedule 40 pipe (property in appendix)?
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Read MoreSimple Machines. Since the beginning of time, humans have developed devices and tools to make work easier. The most notable among these are the six simple machines: the inclined plane, the wheel and axle, the pulley, the lever, the screw, and the wedge.
Read MoreAnswer (1 of 2): In DC machine, one is pole core and second is pole shoe. Functions are as below; Pole core basically carries a field winding which is necessary to produce the flux. It directs the flux produced through air gap to armature core, to the next pole. Pole shoe enlarges the area of...
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