Three-level IGBT power cabinet based on heat pipe radiator

Abstract

The invention discloses a three-level IGBT power cabinet based on a heat pipe radiator. The three-level IGBT power cabinet comprises a rectification power module, an inverting power module, a direct-current bus capacitor module, laminated busbars, a rectifying current sensor and an inverting current sensor. Elements of the rectification power module and inverting power module are the same in arrangement manners and are mounted on the left and right sides of the upper portion of the rear side wall of a cabinet body respectively; the direct-current bus capacitor module is fixedly mounted in the middle of the rear side wall of the cabinet body, and the rectification power module and the inverting power module are symmetrical about the direct-current bus capacitor module; the rectification power module, the inverting power module and the direct-current bus capacitor module are connected through the laminated busbars, and the rectification power module and the inverting power module are connected to the rectifying current sensor and the inverting current sensor respectively. The cabinet body is pre-provided with an alternate-current incoming / discharging wire hole position. The cabinet has the advantages that the standardization of a main module is implemented, the structure is more compact, the maintenance is simplified, the efficiency is improved through the heat pipe radiating manner, and the circuit stray inductance is reduced.

Description

technical field [0001] The invention belongs to the technical field of semiconductor switches, and designs a three-level IGBT power cabinet based on a heat pipe radiator. Specifically, it is a three-level IGBT power cabinet with a higher degree of modularization and less circuit stray inductance. Background technique [0002] In small and medium power converters, a two-level IGBT inverter structure is mostly used. However, the voltage level of the two-level inverter structure is low, the capacity is small, the requirements for motor insulation are high, the motor impact is large, the voltage distortion rate is large, and the current harmonic content is high. Moreover, the electromagnetic compatibility performance is not good, and the power device generates a lot of heat. Therefore, the three-level converter equipment has gradually replaced the two-level converter equipment with its better performance. [0003] Compared with traditional two-level converters, three-level IGB...

AI Technical Summary

Problems solved by technology

However, the three-level converter equipment also has some disadvantages, such as the need for more switching devices, and the structural layout between these switching devices is relatively complicated

Complex control algorithm

If the device layout and wiring are unreasonable, it is easy to cause potential imbalance

Images