A DC motor is a mechanically commutated electric motor powered from direct current (DC). The stator is stationary in space by definition and therefore so is its current. The current in the rotor is switched by the commutator to also be stationary in space. This is how the relative angle between the stator and rotor magnetic flux is maintained near 90 degrees‚ which generates the maximum torque. DC motors have a rotating armature winding but non-rotating armature magnetic field and a static field
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The speed of an asynchronous motor rotating field and thus its rotor speed depends on the number of pairs of poles in the stator field .the rotor speeds n are lower than the table values by the amount of the relevant slip speed ns. Motors are designed with up to three stators windings‚ which have different number of pairs of poles. They can therefore run at up to pairs of poles. They can be in any desired ratio to one another. A pole-changing switch is used to changing poles for the desires speed
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GROUP 4 JULY 26‚ 2013 EE 4101 ENGR. KENNETH F. FAJILAN Reluctance Motor Introduction A reluctance motor is a type of electric motor that induces non-permanent magnetic poles on the ferromagnetic rotor. Torque is generated through the phenomenon of magnetic reluctance. There are various types of reluctance motor: Synchronous reluctance Synchronous reluctance motors have an equal number of stator and rotor poles. The projections on the rotor are arranged to introduce internal flux “barriers“
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Application Report SPRA420A - February 2000 Switched Reluctance Motor Control – Basic Operation and Example Using the TMS320F240 Michael T. DiRenzo Digital Signal Processing Solutions ABSTRACT This report describes the basic operation of switched reluctance motors (SRMs) and demonstrates how a TMS320F240 DSP-based SRM drive from Texas Instruments (TI™) can be used to achieve a wide variety of control objectives. The first part of the report offers a detailed review of the operation
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CASE ANALYSIS - DOMINION MOTORS MARKETING PROGRAM DESIGN Under the Guidance of Dr. Waheed Presented by: RohithDesikan(95) SiddhantKejriwal(109) SalilSrivastava(99) Swati Hasija(116) NikunjShah(105) Vishal Godara(127) Case Introduction The case‚ presented by Professor E. Raymond Corey‚ presents to the potential threat to a company‚ Dominion Motors‚ by a report brought up by John Bridges‚ a big name in the whole Oil Production domain. DMC was a
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technology (IT) in the world of business process improvement can take many forms. From an automation standpoint‚ no one knows more about the subject than the IT professionals within an organization. From the business unit perspective‚ no one knows more than the department professionals. The article selected for this analysis is titled "Whose is Process Improvement Anyway?" by Meridith Levinson. It describes two separate organizations that utilize IT in their business process improvement strategies. It
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organizations. Barriers to Entry (Economy of Scale in manufacturing): All of the major cost components in manufacturing have significant economy of scale. The cost of molding‚ machining and die casting depended on the volume per part; cost of motor and final assembly depended on the volume per product family [Ref Pg. 6‚ Para 9]. However‚ it is interesting to note that‚ no manufacturer had the technology and scale to produce all the necessary components. Even in case of typical large manufacturers
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common: choosing a topic which is too broad… or “dressing up” a topic (Kane‚ 1987) Formulating and clarifying the research topic is the starting point of research (Ghauri and Gronhaug‚ 2010; Smith and Dainty 1991). Most research originates from a general problem. Usually‚ the problem is broad enough that it could not be addressed in a single research study. Consequently‚ the problem is narrowed into a more specific research question. A well-constructed research question is one described by Maylor
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stability between North and South Korea. Though the present political situation between the two opposite poles seems rather unstable‚ South Korea has managed to maintain its tourism and export services and goods percentage on an all time high. As Kia Motors Singapore is still in the introductory stage due to the long brand cycle life of automobile cars‚ a good sense of unrelated publicity led to a growing trend of interest in the brand. In the 2000s‚ the first worldwide Korean wave swept through with
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40 million (2009) | Total assets | US$ 13.572 billion (2009) | Total equity | US$ 2.717 billion (2009) | Employees | 10‚000 (2009)Purpose work for the healthcare | Website | AmerisourceBergen.com | AmerisourceBergen Corporation is a Chesterbrook‚ Pennsylvania based drug wholesale company that was formed by the merger of Bergen Brunswig and AmeriSource in 2001. They provide drug distribution and related services designed to reduce costs and improve patient outcomes‚ distribute
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