Title:
ELECTRIC POWER CONVERTING DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/119214
Kind Code:
A1
Abstract:
In an electric power converting device (1) which converts a direct current voltage into a three-phase alternating-current voltage and outputs the three-phase alternating-current voltage to a power grid, a microcomputer (11) switches high-side switching elements (Q11, Q21, Q31) and low-side switching elements (Q12, Q22, Q32), providing a dead time such that the switching elements are not on simultaneously. At this time, the microcomputer (11) performs dq conversion using complex numbers of phase currents (Iu, Iv, Iw), and detects a d-axis current or q-axis current amplitude value. A phase difference Δθ is changed to reduce the d-axis current or q-axis current amplitude value. Dead time compensation is performed on the basis of the changed phase difference Δθ.
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Inventors:
TAGAWA SHUICHI (JP)
YASUI HIROYUKI (JP)
YASUI HIROYUKI (JP)
Application Number:
PCT/JP2016/085267
Publication Date:
July 13, 2017
Filing Date:
November 29, 2016
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H02M7/48; H02M7/537
Foreign References:
| JP2015061381A | 2015-03-30 | |||
| JP2006320122A | 2006-11-24 | |||
| JP2008086083A | 2008-04-10 |
Attorney, Agent or Firm:
KAEDE PATENT ATTORNEYS' OFFICE (JP)
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