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Test method, apparatus and generator for inverter in generator

A test method and inverter technology, which are used in power test, measurement device, output power conversion device, etc.

Active Publication Date: 2011-01-26
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to provide a testing method for an inverter in a motor, which aims to solve a series of problems caused by using hardware to detect inverters in the prior art

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  • Test method, apparatus and generator for inverter in generator
  • Test method, apparatus and generator for inverter in generator
  • Test method, apparatus and generator for inverter in generator

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Embodiment Construction

[0035] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0036] The testing method of the inverter in the motor of the present invention can be written into the main program of the motor control device, and the switching element of the inverter is controlled through a preset switching mechanism, and the overcurrent alarm detected during the switching element switching process is detected. signal etc. to determine the faulty element.

[0037] Please refer to FIG. 1 and FIG. 2 , the test method of the inverter in the motor of the present invention controls the IPM inverter to realize the test according to the following switching mechanism, and spe...

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Abstract

The invention is applicable to the automated testing field and provides a test method of an inverter in an electric motor, a device and the electric motor; wherein, the method comprises the following steps: controlling a switching element according to a predetermined switch mechanism of all the switching elements of the inverter; testing an overcurrent alarming signal and determining the shorted out switching element according to the tested overcurrent alarm signal. The invention does not need the hardware to test the shorted out element of the IPM inverter and does not change the structure of the original electric motor; furthermore, the invention adopts a mathematical method to control the switching element, being relatively simple and suitable to be added to the main routine of the electric motor, thus overcoming a series of problems in hardware testing.

Description

technical field [0001] The invention belongs to the field of automated testing, and in particular relates to a testing method, device and motor of an inverter in a motor. Background technique [0002] In the field of motor control, especially in the field of control strategies for electric vehicles and hybrid vehicles, intelligent power module (IPM) inverters play a pivotal role. IPM inverters are mainly high-speed and low-power power devices insulated gate bipolar transistors (Insulated Gate Bipolar Transistor, IGBT). A hybrid integrated circuit module with integrated protection circuits. [0003] As shown in FIG. 1 , a common IPM inverter 1 includes a power supply 11 , a capacitor 12 and an IGBT switching element 13 connected in parallel. The power source 11 is a DC power source. The large-capacity electrolytic capacitor in capacitor 12 is used to store energy and filter the ripple of the DC component; the small-capacity absorption capacitor is used to absorb high-frequ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/40G01R31/02H02M7/5387
Inventor 周旭光蒋县宏汤小华龚剑刘楠杨广明
Owner BYD CO LTD