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Double-pulse output method, device, electronic equipment and system

An output method, double-pulse technology, applied in the pulse field, can solve the problems of low test accuracy, poor efficiency, and high cost, and achieve the effect of avoiding low test accuracy and high cost

Active Publication Date: 2021-08-06
NEW UNITED RAIL TRANSIT TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of this application is to provide a double pulse output method, device, electronic equipment and system, which can avoid the problems of high cost, low test accuracy and poor efficiency caused by manual testing of winding inductors and manual adjustment of pulse width

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Embodiment Construction

[0055]In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0056] Double pulse generation, width adjustment and test adjustment all need to be adjusted manually according to different test power devices, test tooling, etc. Manual adjustment needs to be constantly changed according to different device rated current values, bus voltage, and freewheeling inductance. The pulse width is to allow the measured object...

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Abstract

The invention provides a double-pulse output method, a double-pulse output device, electronic equipment and a double-pulse output system. In the double-pulse testing process, winding of the parallel inductor is completed, the inductance value of the parallel inductor is a fixed value, after a tested object is determined, the direct-current bus voltage in each test is also a fixed value, and the direct-current bus voltage in each test is determined according to the formula that the current of the power device=the direct-current bus voltage*the pulse opening time / the inductance value of the parallel inductor. The current of the power device is proportional to the pulse turn-on time (pulse width time), so that the maximum current value and the test pulse width time can be determined in the double-pulse pre-test process according to the proportional relation to obtain the proportional value, and then the target pulse width time is obtained through calculation according to the set target current. The first pulse width and the second pulse width are controlled to be output through the target pulse width time, so that the problems of high cost, low test precision and poor efficiency caused by manual pulse width adjustment during manual test of the wound inductor are solved.

Description

technical field [0001] The present application relates to the field of pulse technology, in particular to a double pulse output method, device, electronic equipment and system. Background technique [0002] The double-pulse test generating device is built by hardware circuit, signal generator, DSP (Digital Signal Processing, digital signal processing) dedicated PWM (Pulse Width Modulation, pulse width modulation) module, FPGA (Field Programmable Gate Array, field programmable gate Array) chip simulation, etc. to output PWM pulses to carry out double-pulse tests of power devices. The PWM pulse generation, width, and time interval adjustment methods are all manually set by adjusting the parameters of components, peripheral key switches, and upper computer communication settings to adapt to different double-pulse test platforms and test objects. To achieve the target value of one times the rated current and twice the rated current required by the double pulse test. However, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R1/28
CPCG01R1/28
Inventor 张伟姜卫栋刘辉马海洋
Owner NEW UNITED RAIL TRANSIT TECH
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