Title:
POWER CONVERSION SYSTEM AND METHOD FOR CONTROLLING POWER CONVERSION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/210274
Kind Code:
A1
Abstract:
In a prediction unit (7), a plurality of tentative voltage vectors are set for each output cycle during a prediction period, and predicted currents for the tentative voltage vectors are calculated on the basis of a correction current value obtained by adding a current variation amount (Δidc, Δiqc) to the detected current during a calculation cycle. The prediction unit (7): calculates the tentative voltage vectors and an evaluation function (J) for the predicted current; determines a combination of tentative voltage vectors for which the evaluation function (J) is at a maximum level from among the combinations of the tentative voltage vectors of the prediction period; and outputs, as a command voltage vector (V*), the tentative voltage vector to actually be outputted, from among the combinations of tentative voltage vectors for which the evaluation function (J) is at the maximum level. A gate signal determination unit (8) outputs a gate signal (g) for outputting the voltage represented by the command voltage vector (V*) from a power converter (3). A control having high current control performance and low switching frequency is thereby performed in a power conversion system using a model prediction control (MPC).
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Inventors:
OGAWA RYUICHI (JP)
TAKIGUCHI MASASHI (JP)
TAKIGUCHI MASASHI (JP)
Application Number:
PCT/JP2021/006994
Publication Date:
October 21, 2021
Filing Date:
February 25, 2021
Export Citation:
Assignee:
MEIDENSHA ELECTRIC MFG CO LTD (JP)
International Classes:
H02P21/22; H02M7/48; H02P27/06
Foreign References:
| JP2012070469A | 2012-04-05 | |||
| JP2020031485A | 2020-02-27 | |||
| JPH08317699A | 1996-11-29 | |||
| JP2012253943A | 2012-12-20 | |||
| JP2012236531A | 2012-12-06 |
Attorney, Agent or Firm:
KOBAYASHI, Hiromichi et al. (JP)
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