Title:
TRANSIENT PROCESS TIME INFORMATION DETECTION APPARATUS FOR POWER ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/006007
Kind Code:
A1
Abstract:
A transient process time information detection apparatus for a power electronic device. The apparatus comprises: an RC equivalent circuit, which is connected in parallel to an equivalent voltage source formed by a power electronic device, wherein the RC equivalent circuit is a resistor-capacitor network, and the resistor-capacitor network at least comprises one resistor and one capacitor; and a digital isolation component, which is connected to the resistor-capacitor network or connected to a branch circuit of the resistor-capacitor network, and is used for: during a switch-off transient process of the power electronic device, extracting time point information of a pulse current signal of when the capacitor is charged; and/or during a switch-on transient process of the power electronic device, extracting time point information of a pulse current signal of when the capacitor is discharged, wherein the time point information comprises a starting point moment and/or an ending point moment. By means of the apparatus, the aims of low cost, high precision and a strong anti-interference capability can be achieved.
Inventors:
ZHANG XICHUN (CN)
XU XIAOYU (CN)
XU XIAOYU (CN)
Application Number:
PCT/CN2022/108417
Publication Date:
February 02, 2023
Filing Date:
July 28, 2022
Export Citation:
Assignee:
QISHE ELECTRONICS TECH SHANGHAI CO LTD (CN)
International Classes:
G01R19/25; G01R15/14; G01R31/26
Foreign References:
| CN113589027A | 2021-11-02 | |||
| CN106199367A | 2016-12-07 | |||
| CN112858866A | 2021-05-28 | |||
| CN112769314A | 2021-05-07 | |||
| CN202171639U | 2012-03-21 | |||
| US5500834A | 1996-03-19 | |||
| CN102843059A | 2012-12-26 | |||
| JPS5656177A | 1981-05-18 | |||
| CN101419271A | 2009-04-29 |
Attorney, Agent or Firm:
BEIJING GAOWO LAW FIRM (CN)
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