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Voltage Regulation

This document contains 8 examples of calculations related to different types of compound generators. The examples calculate various efficiencies like commercial efficiency, mechanical efficiency, electrical efficiency, and overall efficiency. They provide the formulae and values to solve for things like current, voltage regulation, and efficiencies using specifications like armature resistance, field resistances, load current and power.

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Anna Marie Garbo
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189 views16 pages

Voltage Regulation

This document contains 8 examples of calculations related to different types of compound generators. The examples calculate various efficiencies like commercial efficiency, mechanical efficiency, electrical efficiency, and overall efficiency. They provide the formulae and values to solve for things like current, voltage regulation, and efficiencies using specifications like armature resistance, field resistances, load current and power.

Uploaded by

Anna Marie Garbo
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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Types of Compound

Wound Generator
Voltage Regulation
Example #1. A shunt generator delivers 195A at a terminal voltage of
250V. The armature resistance and the shunt field resistance are 0.02 and
50 ohms. The iron and the friction losses are equal to 950W. Find the
commercial efficiency of the generator.
Example #1. A shunt generator delivers 195A at a terminal voltage of
250V. The armature resistance and the shunt field resistance are 0.02 and
50 ohms. The iron and the friction losses are equal to 950W. Find the
commercial efficiency of the generator.
Example #2. A shunt generator delivers 195A at a terminal voltage of
250V. The armature resistance and the shunt field resistance are 0.02 and
50 ohms. The iron and the friction losses are equal to 950W. Find the
mechanical efficiency of the generator.
Example #3. A shunt generator delivers 195A at a terminal voltage of
250V. The armature resistance and the shunt field resistance are 0.02 and
50 ohms. The iron and the friction losses are equal to 950W. Find the
electrical efficiency of the generator.
Example #4. A DC Generator has a mechanical efficiency at 98.2% and an
electrical efficiency of 95.9%. Find the commercial efficiency.
Example #5. The voltage of a 100kW, 250V shunt generator rises to 260V
when the load is removed. What is the full load current does the machine
deliver, and what is its percent regulation?
Example #6. A short compound generator delivers 150A at a terminal
voltage of 230V. The shunt field winding is 2.5A.The resistances of
armature, series field winding and diverter are 0.032, 0.015 and 0.03
ohms respectively. Calculate the electrical efficiency of the generator at
this load.
Example #6. A short compound generator delivers 150A at a terminal
voltage of 230V. The shunt field winding is 2.5A.The resistances of
armature, series field winding and diverter are 0.032, 0.015 and 0.03
ohms respectively. Calculate the electrical efficiency of the generator at
this load.
Example #7. A short compound generator delivers 150A at a terminal
voltage of 230V. The shunt field winding is 2.5A.The resistances of
armature, series field winding and diverter are 0.032, 0.015 and 0.03
ohms respectively. Calculate the mechanical efficiency of the generator at
this load. If Mechanical Losses is 950W.
Example #8. A short compound generator delivers 150A at a terminal
voltage of 230V. The shunt field winding is 2.5A.The resistances of
armature, series field winding and diverter are 0.032, 0.015 and 0.03
ohms respectively. Calculate the overall efficiency of the generator at this
load. If Mechanical Losses is 950W.

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