Wide Variable Frequency Ac Sine Wave Signal Source

In this paper, a signal source that is used for intelligent test of generator control unit, is researched. The signal source relates to technology of power electronic cybernetics and technology of microprocessor, and so on. The paper, focused on the programmable SA4828 and AT89C52 Single-Chip microcomputer, carried out the design and the debugging of hardware and software of the width frequency-conversion and voltage-conversion alternating-current sinusoidal wave signal source. The feasibility and the excellence of the design have been proved by the result of instrument test. The research of the paper has established a foundation for the intelligent test of the generation control unit. The study brings up a new way to make voltage and frequency of the three-phase sinusoidal inverter change large-range possible. Finally, the main work of the paper is summarized, and the suggestions are given for future study.