Title:
UNINTERRUPTIBLE POWER SUPPLY UNIT AND UNINTERRUPTIBLE POWER SUPPLY UNIT TEST METHOD
Document Type and Number:
WIPO Patent Application WO/2018/163397
Kind Code:
A1
Abstract:
A control device (4) is configured so that, when performing an electrical test on an uninterruptible power supply unit (100) with no load connected to a fourth terminal (T4), first and second switches (S2, S3) are turned on and the output current of an inverter (2) is controlled according to a current command value. The control device (4) generates a voltage command value on the basis of a d-axis current command value, q-axis current command value, and the deviation between a d-axis current value and a q-axis current value, said d-axis current command value being obtained by performing a coordinate transformation on the current command value, said d-axis current value being obtained by performing a coordinate transformation on the output current. The control device generates a control signal for the inverter (2) on the basis of the voltage command value. The control device controls the frequency of the control signal so that the phase of an AC voltage generated by the inverter (2) according to the control signal is synchronized with the phase of an AC power supply (5).
Inventors:
LEE TINGAN (JP)
TOYODA MASARU (JP)
TOYODA MASARU (JP)
Application Number:
PCT/JP2017/009663
Publication Date:
September 13, 2018
Filing Date:
March 10, 2017
Export Citation:
Assignee:
TOSHIBA MITSUBISHI ELEC IND (JP)
International Classes:
H02J9/06
Domestic Patent References:
| WO2017006427A1 | 2017-01-12 |
Foreign References:
| JP2003180035A | 2003-06-27 |
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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