Abstract
Along with the rapid development of power electronic technology, sinusoidal output variable frequency power has been widely applied in various fields, meanwhile the output of variable frequency power voltage waveform quality also put forward higher request. In the laboratory and industrial sectors, three-phase inverter power often used in all kinds of sine wave measuring and controlling circuit, produce single-phase three-phase sine signals, or as the benchmark signals, the benchmark sine wave quality directly affect the accuracy of measurement and control. For a good sine signal output of its benchmark sine signal amplitude, frequency stability, high degree of small and load capacity, amplitude, adjustable for three-phase sine signals, also requires good symmetry three-phase. Both these requirements often make complicated circuit. Therefore, the research and development is simple and has good dynamic and static performance of the inverter control strategy, has become the focus of research in the field of power electronics.
Keywords:Three-phase sine wave frequency inverter