Synthesis of Three-Phase Waveforms Using the Selected Microprocessor – Analysis of Constraints
Waveform generators employed in student laboratories are often purchased instruments, while some their functionalities are not required. An important part of many test sets are multi-phase generators with an analog or digital structure. Designed based on the known concept, the construction of a three-phase sinusoidal signal generator and selected test results are presented. The requirements for properties of the output signals of the generator have been specified. The phase shift between sine waves are kept precisely at 120° and the amplitudes of the signals are controlled within the adopted frequency range. Low distortion of signals was also obtained. The model of the developed three-phase digital generator was described and the results of selected research were presented and then discussed. A short analysis of constraints related to the generators’ properties, mainly resulting from the features of the elements used in the project, was also carried out.
KeywordsDDS technology Three-Phase wave generator Launchpad board
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