Title:
LOAD ABNORMALITY DETECTING CIRCUIT FOR INVERTER
Document Type and Number:
WIPO Patent Application WO/2019/087542
Kind Code:
A1
Abstract:
A load abnormality detecting circuit for an inverter to detect abnormality of a load during an operation of the inverter which has a self-arc-extinguishing element as a switching element and a phase synchronizing loop controlling an output frequency to be a resonance frequency of the load, the load abnormality detecting circuit includes a phase shift detection part that detects a phase shift between a gate voltage signal controlling ON/OFF of the self-arc-extinguishing element and an output current of the inverter which is applied to the load, and that sends a first abnormal load signal based on the phase shift.
Inventors:
KANAI TAKAHIKO (JP)
YANG YUE (JP)
YANG YUE (JP)
Application Number:
PCT/JP2018/031233
Publication Date:
May 09, 2019
Filing Date:
August 23, 2018
Export Citation:
Assignee:
NETUREN CO LTD (JP)
International Classes:
H02M1/32; H02M7/539; H02H7/122; H02J50/12; H05B6/02
Foreign References:
JP2005166621A | 2005-06-23 | |||
JP2007280897A | 2007-10-25 | |||
JPH11329707A | 1999-11-30 | |||
US6226196B1 | 2001-05-01 | |||
JP2015119583A | 2015-06-25 |
Other References:
None
Attorney, Agent or Firm:
KOH-EI PATENT FIRM, P.C. (JP)
Download PDF: