Power converter

Abstract

A power converter is provided. In the power converter, cooling of the power converter is extremely important for improving a power conversion performance. Specifically, a DC smoothing capacitor module stored in a housing of the power converter is heat-sensitive, and in order to secure the performance, efficient cooling of the capacitor module is required. In addition, reducing the heat entering from the outside as much as possible is required. A conductor panel of the capacitor module and the housing are connected via a cooling panel, and an AC connection bus bar and the housing are connected by the cooling panel to release heat from the capacitor module and the AC connection bus bar to the housing via the cooling panel.

Description

[0001] This application is a divisional application of the application with the international application number PCT / JP2013 / 051022, the national phase application number 201380007753.9, the application date is January 21, 2013, and the invention name is "power conversion device". technical field [0002] The present invention relates to a power conversion device for converting direct current into alternating current or converting alternating current into direct current, and in particular to a power conversion device capable of efficiently dissipating heat generated inside a casing housing electrical components of the power conversion device. Background technique [0003] Generally, a power conversion device includes a capacitor unit for smoothing that receives DC power from a DC power source, an inverter circuit that receives DC power from the capacitor unit to generate AC power, and a control circuit that controls the inverter circuit. [0004] AC power obtained by the power...

AI Technical Summary

Problems solved by technology

[0013] Many electronic components, such as insulated gate bipolar transistors with large heat generation, are often used inside the casing of the above-mentioned power conversion device, and there is an environment where the inside of the casing becomes high in temperature due to the heat generated by these electronic components. The phenomenon

In addition, a wire electrically connected to the motor and having good heat transfer is connected to the power conversion device, and the heat of the motor enters the bus bar of the power conversion device through the wire, and the heat enters the inverter circuit unit or, depending on the case, the capacitor assembly. , as a result, there is a phenomenon that the temperature inside the casing of the power conversion device is raised

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