SISTEMAS DC Motors Catedrático: Ing. Gustavo Mendoza Leal Alumno: Alfredo Valdés Cárdenas Introduction A DC motor is a type of electrical machine that converts direct current into mechanical power by means of a magnetic field. DC motors are widely used in field applications because of their many advantages over AC motors such as speed control‚ high starting torque‚ quick starting‚ stopping‚ reverse and acceleration and free from harmonics found in AC. Applications of DC motors include but
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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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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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1. FINANCIAL PERFORMANCE ANALYSIS 1.1 Introduction Finance is the life i.e. blood of business. It is rightly termed as the science o f money. Finance is very essential for the smooth of the business. According to Wheeler‚ “Finance is that business activity which is concerned with the organization and conversation of capital funds in meeting financial needs and overall objectives of a business enterprise”. Financial management is that management activity which is concerned with the planning
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INTRODUCTION “A promise is promise and I kept my promise”- this is the historical statement which Mr. RATAN TATA said when he launched his ambitious TATA NANO; the people’s car in India on 23 rd march 2009. Tata has always given value products in the Indian Car Market whether it is path breaking recently launched TATA NANO or TATA INDICA (which created great brand into the car industry in the diesel segment). Not only is the passenger car‚ even into the heavy vehicle segment TATA is the only
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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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accordance with University regulations. Abstract The mechanisms that regulate cellular senescence‚ organismal ageing‚ and species-specific lifespan depend on a synergy of pathways that are multifactorial and extremely complex‚ though not yet completely understood. Recently‚ the development of new molecular techniques has elucidated‚ at least in part‚ the primary pathways involved in ageing. In parallel with the search to uncover the factors that control ageing is the endeavor to discover methods of extending
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Running head: FORD MOTOR COMPANY Ford Motor Company Fay Bennett BUS 490 May 12‚ 2010 Ford Motor Company 1. Define and discuss Ford’s business-level strategy. Ford’s business-level strategy is to design‚ develop‚ manufacture‚ and service cars and trucks worldwide that meets and satisfies its customers’ needs. The company follows cost leadership business-level strategy. The "One Ford" plan is the foundation of the company’s actions to achieve its mission and vision. Ford is one team
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Problem Definition John Bridges‚ the chief electrical engineer of Hamilton Oil Company‚ has concluded through motor testing that DMC competitors Spartan Motors and the Universal Motor Company of Canada offer the first and second choice motors on the market‚ respectively. DMC’s position as the third choice could prove quite detrimental to its market share because Hamilton is the largest active oil company in Canada‚ operating over 30% of producing wells‚ and Bridges is extremely influential in
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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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