Title:
INVERTER POWER GENERATOR AND CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2019/116440
Kind Code:
A1
Abstract:
When a communication unit receives a first synchronization signal from another inverter power generator, a control unit repeats a series of processes of: comparing a first phase, which is included in the first synchronization signal, with a second phase, which is the phase of a second reference sine wave when receiving the first synchronization signal; changing the amount of phase change of the second reference sine wave per unit time in accordance with the comparison result; and continuing to update the phase of the second reference sine wave until the next first synchronization signal is received from the another inverter power generator so that the phase of the second reference sine wave changes with the amount of phase change per unit time after the change with reference to the first phase. The control unit compares a third phase, which is included in the first synchronization signal received by the communication unit before the timing of polarity reversion of the second reference sine wave, with a fourth phase, which is the phase of the second reference sine wave when receiving the first synchronization signal, changes the amount of phase change of the second reference sine wave per unit time in accordance with the comparison result, and continues to update the phase of the second reference sine wave so that the phase of the second reference sine wave changes with the amount of phase change per unit time after the change, thereby predicting the timing of polarity reversion of a first reference sine wave.
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Inventors:
YAMASHITA KAZUO (JP)
YAMAGUCHI YASUKAZU (JP)
YAMAGUCHI YASUKAZU (JP)
Application Number:
PCT/JP2017/044501
Publication Date:
June 20, 2019
Filing Date:
December 12, 2017
Export Citation:
Assignee:
SHINDENGEN ELECTRIC MFG (JP)
International Classes:
H02M7/493; H02P9/00
Foreign References:
| JP2015231264A | 2015-12-21 | |||
| JP2006217780A | 2006-08-17 | |||
| JP2000209872A | 2000-07-28 |
Attorney, Agent or Firm:
OHNO Seiji et al. (JP)
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