High-voltage variable-frequency power supply power unit

Abstract

The invention discloses a high-voltage variable-frequency power supply power unit, which comprises an IGBT (Insulated Gate Bipolar Transistor) assembly and a capacitor assembly with separated structures, wherein the capacitor assembly comprises a capacitor and a capacitor-side busbar connected with the capacitor, and the IGBT assembly comprises a fuse, a rectification-side copper bar, a resistor,a rectifier diode, an IGBT-side busbar, an IGBT, a control board card assembly, a vacuum circuit breaker and a radiator. The rectifier diode, the IGBT and the resistor are fixed on the surface of theradiator, the fuse is connected with the rectifier diode through the rectifier-side copper bar, the vacuum circuit breaker is located on the upper portion of the IGBT, the control board card assemblyis located on the back face of the radiator, and the capacitor assembly and the IGBT assembly are electrically connected through the capacitor side busbar and the IGBT-side busbar. According to the power unit, the IGBT assembly and the capacitor assembly are separated in structure, the structure is compact, and modular assembly and transportation are facilitated.

Description

technical field [0001] The invention relates to a high-voltage variable frequency power supply power unit with a new structure. Background technique [0002] In the industrial field, the high-voltage variable frequency power supply system has the characteristics of stable frequency, stable voltage, zero internal resistance, and pure sine wave (no distortion) voltage waveform. It has obvious advantages in power consumption on the shore of ships and is an important direction for future development. [0003] High-voltage frequency conversion power supply is a very good device for voltage stabilization and frequency modulation. In actual engineering, the power generated by the power plant is limited. When the peak power consumption exceeds its load capacity, the power supply department will adopt step-down power supply, which will cause the entire power grid to form an undervoltage; when the power consumption peak is low, the load is very light, which will increase the voltage ...

AI Technical Summary

Problems solved by technology

[0005] At present, the high-voltage variable-frequency power supply products used in the market generally install the power unit of the high-voltage variable-frequency power supply in the container. There are a series of problems such as relatively complicated wiring, difficult handling of the power unit, water leakage from the water-cooled radiator, and water entering the interior of the power unit. Improve

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