Calculate the machine power factor, Mechanical Engineering

Assignment Help:

A 3-phase, 15-kV, 4-pole, cylindrical rotor synchronous generator is connected to a 50-Hz infinite bus. The synchronous reactance of the machine is Xs = 0.6 ohms per phase and the excitation voltage is set to E0 = 12 kV line-to-neutral. 

 a)  Draw single-phase equivalent circuit representing the machine connected to infinite bus. 

b)  Consider the machine running as a synchronous condenser.

(i)  What is the amount of active power generated by the machine? 

(ii)  Calculate the amount of current injected by the machine to the infinite bus. 

(iii)  Calculate the amount of reactive power generated by the machine. 

 Now, the excitation voltage has been reduced to 8.66 kV and the steam turbine supplies mechanical torque on the shaft such that the torque angle of the machine is equal to +30°.

 c)  Draw phasor diagram for this operating conditions showing clearly the bus voltage, the excitation voltage and the stator current. 

d)  Calculate the machine power factor.


Related Discussions:- Calculate the machine power factor

Mechanical piping material specifications, The Specifications for use on a ...

The Specifications for use on a project will be as defined in the ‘Project Execution Plan'. The specification requirements will be clarified in the Engineering Estimate or at the

Isolated system - thermodynamics, Isolated System: In an Isolated syst...

Isolated System: In an Isolated system, neither energy nor masses are permitted to cross the boundary. The system has constant mass and energy. No such system exists physicall

Determine equivalent maximum shear stress in spring, Determine equivalent m...

Determine equivalent maximum shear stress in spring: A close coiled helical spring contains a stiffness of 10 N/mm. Its length while fully compressed, with adjacent coils touc

Structural design, The Contractor is responsible for obtaining all drawings...

The Contractor is responsible for obtaining all drawings, standards and specifications referred to in the bid documents and to request as needed additional or missing reference dat

Assumptions made in deriving torsional formulas, Assumptions made in derivi...

Assumptions made in deriving torsional formulas: What are assumptions made in deriving torsional formulas?                                           Sol.: The torsion

Explain field winding - dc generator, Field winding Every pole c...

Field winding Every pole core has one or more ?eld windings provided on it to make a magnetic ?eld. Whenever they carry current, they electromagnetic the poles which pro

Machine and tool selection , Machine and Tool Selection The quality of...

Machine and Tool Selection The quality of a product largely depends on the type of machine, the type of process, machining conditions and the right selection of tools. The cur

Derivation, how to find the equation for deflection of a cantilever beam su...

how to find the equation for deflection of a cantilever beam subjected to udl in terms of Airy''''s stress function

Reciprocatin compressor - , Reciprocatin Compressor. It is taken in use to...

Reciprocatin Compressor. It is taken in use to compressor gases. ( kE 2  - kE 1) = 0, ( pE 2  - pE 1) = 0 q 1-2  - w 1-2 = ( h 2  - h 1 ) + 0 + 0 - q 1-2  - (- w

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd