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Patent Searching and Data


Title:
INVERTER DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/061342
Kind Code:
A1
Abstract:
The inverter device is provided with: a converter unit (21) for performing full-wave rectification of a three-phase alternating-current voltage and outputting a direct-current voltage containing a pulsating component having a frequency six times as high as the frequency of the three-phase alternating-current voltage; an inverter unit (22) for converting the pulsating-component-containing direct-current voltage from the converter unit (21) into an alternating-current voltage for output to a motor (23); and a control device (100) for controlling the inverter unit (22) such that the phase of a d-axis voltage Vd of the pulsating component contained in the direct-current voltage is advanced with respect to that of a q-axis voltage Vq in a rotation coordinate system in which d-axis represents a N-pole direction of a permanent magnet embedded in a rotor of the motor (23) and q-axis represents a phase direction orthogonal to the d-axis. Consequently, it is possible to provide an inverter device such that pulsation and beating of a motor current can be suppressed without reducing the voltage utilization rate.

Inventors:
KITANO, Nobuki (Umeda Center Building, 4-12, Nakazaki-Nishi 2-Chome, Kita-ku, Osaka-sh, Osaka 23, 〒5308323, JP)
INOUE, Tatsuki (Umeda Center Building, 4-12, Nakazaki-Nishi 2-Chome, Kita-ku, Osaka-sh, Osaka 23, 〒5308323, JP)
Application Number:
JP2017/022643
Publication Date:
April 05, 2018
Filing Date:
June 20, 2017
Export Citation:
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Assignee:
DAIKIN INDUSTRIES, LTD. (Umeda Center Building, 4-12 Nakazaki-Nishi 2-Chome, Kita-ku, Osaka-sh, Osaka 23, 〒5308323, JP)
International Classes:
H02M7/48; H02M7/06; H02P21/00; H02P27/04
Attorney, Agent or Firm:
SAMEJIMA, Mutsumi et al. (AOYAMA & PARTNERS, Umeda Hankyu Bldg. Office Tower 8-1, Kakuda-cho, Kita-ku, Osaka-sh, Osaka 17, 〒5300017, JP)
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