Synchronous Machine For A Motor And A Generator

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Synchronous Machines Louis Meyer EE-3501 Section 3B November 7, 2014 Table of Contents Abstract This report contains details from three lab experiments performed using a synchronous machine for both a motor and a generator. The fundamental principle of a synchronous machine is that the electrical frequency is related to the mechanical frequency. The first lab performed consisted of doing two different tests, the open-circuit and short-circuit tests, respectively. By performing these two basic tests, it can be determined the armature voltage and current changes drastically with each test. The second lab performed required to use the synchronous machine as a generator. When acting like a generator, it becomes necessary to…show more content…
There are two primary synchronous machines, the synchronous generator and the synchronous motor. Both machines are very useful depending on the application necessary for their use. Depending on the external conditions, it is required to have an understanding of how the synchronous machine should be modeled for each use. The synchronous machine is commonly found in industrial settings, clocks, and power plants. The common factor between these fields is the requirement of running at a constant speed. The synchronous generators used in power plants are common because it is economically efficient to keep the generator running at a constant frequency. Depending on the application, the synchronous machines can be modeled proportionally between the mechanical frequency based on the number of poles and the frequency of current (see theory). Consequentially, the electrical radian frequency is determined be the electrical frequency. Modeling a synchronous machine is a simple task, provided the necessary parameters are known. For this lab the model of the synchronous machine was already considered. The synchronous machine being used had a rating of 208-V (line-to-line rms), 60-Hz, and 200-W. It is a 4-pole machine with a synchronous speed of 1800 RPM. The open-circuit and short-circuit tests performed in this lab can
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