Efficiency of Motor
Efficiency of a DC Machine When running as a motor,
load current = IL in Ampere.
Load voltage = V in Volt.
Total input power = V IL in Watts.
The total constant losses are the same as calculated above.
Total constant losses: PC = V IO – (IO – Ish)2 Ra
Armature copper loss = (I0 – ISh)2 Ra
Total losses: PT = PC + (I0 – ISh)2 Ra = V I0 – (I0-ISh)2 Ra + (I0-ISh)2 Ra
Output = Input-PT = V IL-PT
Efficiency of a Motor
ηg = Output / Input x 100
ηg = ( V IL ) / ( V IL + PT ) x 100%
Swinburne Test of DC Machine
The Swinburne Test is a method for determining the performance characteristics of direct current (DC) devices like generators and motors. This test, named for its author, Thomas Swinburne, a renowned electrical engineer from the early twentieth century, gives useful information on the efficiency and overall health of DC equipment. If you are interested in electrical engineering, particularly DC machines, this test is very important. In this essay, we will go over the Swinburne Test, including its aim, methodology, and significance in the evaluation of direct current machines.
Table of Content
- Swinburne’s Test
- Calculation of Efficiency
- Efficiency of Motor
- Efficiency of Generator
- Swinburne’s Test Vs Hopkinson’s Test
- Advantages and Disadvantages
- Applications