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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TATA MOTORS I. INTRODUCTION Tata Group is an Indian multinational company headquartered MUMBAI‚ MAHARASHTRA‚ INDIA. Tata group business is spread across 7 sectors their main sector being steels. Their empire is spread across 6 continents and has its presence in 80 nations. The combined market capitalization of all the 31 listed Tata companies was $89.88 billion as of March 2012.Tata group gets its major revenue from overseas market contributing 58%. Tata Motors Limited is an Indian multinational
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ELECTRIC MOTOR CONTROLS Once the proper motor is selected‚ understanding the many various control devices available and their uses and limitations becomes an important part related to reliable operation and protection of the motor and the personnel using the motor. Motor Control Topics There are four major motor control topics or categories to consider. Each of these has several subcategories and sometimes the subcategories overlap to some extent. Certain pieces of motor control equipment can accomplish
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Tesla Motors – Company Profile By Kevin Jarosz IE-618 Fall 2014 Financial Impact • Tesla will pay for this by taking a cut of the apps. • Tesla will take a 30%of the cost • Assuming each Tesla owner downloads 5 apps the first year at an • average price of $10‚ that is approximately $6M in revenue in 2015 of which Tesla gets $1.8M to pay. • In Q2 2014 Tesla reported their vehicle margin was 26.9% on a GAAP basis‚ and it is clear that apps will only increase vehicle margin. • Owners will be buying
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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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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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ultrasonic motor INTRODUCTION All of us know that motor is a machine which produces or imparts motion‚ or in detail it is an arrangement of coils and magnets that converts electric energy into mechanical energy and ultrasonic motors are the next generation motors. In 1980‚the world’s first ultrasonic motor was invented which utilizes the piezoelectric effect in the ultrasonic frequency range to provide its motive force resulting in a motor with unusually good low speed‚ high torque
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SWOT analysis of General Motors This is a General Motors Company SWOT analysis for 2013. For more information on how to do SWOT analysis please refer to our article. Company background General Motors Company (GM) is a corporate that designs‚ builds and sells cars and trucks. Name Industries served Geographic areas served Headquarters Current CEO Revenue Profit Employees Main Competitors General Motors Company Automotive Worldwide U.S. Daniel Akerson $ 152.3 billion (2012) $ 4.9 billion (2012)
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another country it does business in. 2. Governance and compliance would affect Tata Motors by enacting the company to manage its financial and technological information set to a certain standard. The organization is subject to many regulations governing data retention‚ confidential information‚ financial accountability‚ and recovery from disasters. 3. The different global system development issues Tata Motors may encounter as it deploys its Nano are difficulties when first setting up the global
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