Universal experimental device based on Z-source inverter

Abstract

The invention discloses a universal experimental device based on a Z-source inverter, comprising a power circuit module, a signal circuit module, a DSP (Digital Signal Processor) control module, an IGBT (Insulated Gate Bipolar Translator) drive module and an upper computer module, wherein the power circuit module is connected with the signal circuit module; the signal circuit module is connected with the DSP control module; the DSP control module is connected with the IGBT drive module; the DSP control module is connected with the upper computer; and the IGBT drive module is connected with the power circuit module. Compared with the prior art, the universal experimental device based on the Z-source inverter is suitable for a plurality of application situations based on the Z-source inverter, such as grid-connected photovoltaic power generation, alternating-current motor speed governing, uninterrupted power supply (UPS) and the like, and comprehensively takes the universal requirements thereof in the plurality of application situations into account; based on the experimental device, the developer can performs the control algorithm study based on the Z-source inverter and performs secondary development quickly, so that the development period is shortened and the working efficiency of scientific research is improved; and simultaneously, the universal experimental device based on the Z-source inverter is advantageous for deep theoretical research and popularization and application of the Z-source inverter.

Description

technical field [0001] The invention relates to an experimental device in the field of power electronic inverter technology, in particular to a general experimental device based on a Z-source inverter. Background technique [0002] Inverter technology can convert DC electric energy into AC electric energy, so it has been widely used in the occasions that require DC-AC conversion of electric energy, such as AC motor speed regulation and photovoltaic grid-connected power generation. At present, commonly used inverters adopt two-level single-phase full-bridge or three-phase full-bridge topologies. At the same time, in order to meet the requirements of the full-bridge topology for its DC side voltage, the system often includes a first-stage DC conversion link. In recent years, the scholar FangZ.Peng pointed out the shortcomings of this inverter topology in terms of reliability, efficiency, and power quality, and proposed a new inverter topology based on passive Z networks in his...

AI Technical Summary

Problems solved by technology

The patent has a single function and cannot realize the functions of single-phase grid connection and AC motor speed regulation, and cannot be used as a rapid development platform based on the Z-source structure.

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