Device and method for double-pulse test of IGBT (insulated polar bipolar transistor) driving module

Abstract

The invention discloses a device for a double-pulse test of an IGBT (insulated polar bipolar transistor) driving module. The device comprises a simulation controller, an oscilloscope, a high voltage power source and a load inductor, wherein the oscilloscope, the high voltage power source and the load inductor are integrated into a double-pulse test cabinet, the interior of the simulation controller is integrated with a test main board, and the test main board is used for controlling the test process. According to the practical test condition, negative and positive bus conductive wires outputted by the simulation controller and a U / V / W three-phase leading out wire are connected with a test conducting wire of the double-pulse test cabinet. A method for the double-pulse test of the IGBT driving module comprises the following steps of sequentially testing the three phases of a power unit through a measuring procedure, evaluating the properties of the IGBT and a driving board in the to-be-tested power unit according to the test data and the wave shape displayed on the oscilloscope, and meanwhile, correcting the power unit. The device can actually capture the actual working condition of the power unit in an automobile motor controller, the test result is accurate, the properties of the power unit are optimized, and the device is not only suitable for experiments, but also suitable for the ex-factory test of batched production.

Description

technical field [0001] The invention relates to a detection device for an IGBT and a drive board, in particular to a double-pulse test device and method for an IGBT drive module. Background technique [0002] With the national demand for energy conservation and emission reduction, electric vehicles have gradually become popular in large and medium-sized cities in my country, especially the government-led electric bus and electric taxi projects, which are making immeasurable contributions to the national energy conservation and emission reduction tasks. The electric vehicle controller, as the most critical component of the electric vehicle, has also been highly valued by everyone. Its development and technical level have been widely concerned by the national ministries and the market. IGBT and drive are the most critical and expensive components of the electric vehicle controller. The quality of the components directly determines the failure rate and service life of electric ...

AI Technical Summary

Problems solved by technology

[0003] The traditional double-pulse experiment can measure the IGBT and the driver board in the laboratory, which is an indispensable test step in the design of the power unit, but the laboratory test is more or less different from the power unit directly installed on the electric vehicle control panel. Sometimes no problems are found in the test, but when the power unit is installed in the electric vehicle controller, it will bring problems such as unknown stray inductance, which may burn the electric vehicle controller; in addition, The traditional double-pulse test platform is difficult to meet the factory test of mass production due to the limitation of volume; moreover, the traditional test is often only tested for one-phase IGBT, and the test data cannot be obtained accurately. When the power unit is installed in the electric vehicle control After the controller, the performance of the controller cannot be guaranteed

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