Title:
BOOSTER CONTROL DEVICE, AND VOLTAGE CONTROL METHOD FOR BOOSTER CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/018550
Kind Code:
A1
Abstract:
The present invention is provided with: a booster 26 that is a transformer-coupled DC-DC converter in which a set of two bridge circuits having a plurality of switching elements are coupled by a transistor, and that varies the output voltage in response to the phase difference of the voltages output by the bridge circuits; a booster voltage detection sensor 53 that detects the output voltage Vo of the booster 26; a capacitor voltage sensor 28 that detects the capacitor voltage Vcm; and a phase difference control unit 101 that performs feedback control on the output voltage of the booster 26 such that the difference between the output voltage command value Vcom for the booster 26 and the output voltage Vo(Vsm) reaches 0. On the basis of the capacitor voltage dependency of the input/output characteristics of the booster output for the phase difference of the booster 26, the phase difference control unit 101 corrects the control gain in response to the capacitor voltage Vcm so as to reach a control gain at which the booster output is uniquely determined by the phase difference, irrespective of the capacitor voltage Vcm, and outputs the control phase difference Da to the booster 26.
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Inventors:
SAGAWA TOMOHIKO (JP)
MOKI ATSUSHI (JP)
MOKI ATSUSHI (JP)
Application Number:
PCT/JP2016/075047
Publication Date:
February 02, 2017
Filing Date:
August 26, 2016
Export Citation:
Assignee:
KOMATSU MFG CO LTD (JP)
International Classes:
H02M3/28
Foreign References:
JP2015006037A | 2015-01-08 |
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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