Title:
POWER CONVERSION DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/068821
Kind Code:
A1
Abstract:
Provided is a power conversion device in which, when a power-source disturbance occurs, an inverter maintains the direct-current voltage, and operation of the device is continued with the motor in an excited state, while an overcurrent/overvoltage of a converter is prevented by gate-blocking the converter. The power conversion device is provided with: a power-source disturbance detection means that detects a power-source disturbance; a CNV gate-blocking means that gate-blocks a converter when a power-source disturbance is detected by the power-source disturbance detection means and a predetermined functional operation requirement is satisfied; an INV control switching flag signal output means that switches the control of the inverter when the converter is gate-blocked by the CNV gate-blocking means and the direct-current voltage does not exceed a predetermined voltage; and an inverter control means that controls the inverter on the basis of the INV control switching flag signal. When a power-source disturbance is detected, control is carried out such that the converter is gate-blocked and the operation of the inverter is continued during the output period of the INV control switching flag signal.
Inventors:
TOBAYASHI SHUNSUKE
OKA TOSHIAKI
OKA TOSHIAKI
Application Number:
PCT/JP2016/070906
Publication Date:
April 27, 2017
Filing Date:
July 14, 2016
Export Citation:
Assignee:
TOSHIBA MITSUBISHI-ELECTRIC IND SYSTEMS CORP (JP)
International Classes:
H02P3/18; H02P27/06
Foreign References:
| JP2013110830A | 2013-06-06 | |||
| JP2013115914A | 2013-06-10 |
Other References:
See also references of EP 3367554A4
Attorney, Agent or Firm:
INOUE, Masanori (JP)
Download PDF: