The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 25, 2020
Filed:
Oct. 07, 2015
Meidensha Corporation, Tokyo, JP;
Shizunori Hamada, Numazu, JP;
Kenji Kobori, Shizuoka, JP;
MEIDENSHA CORPORATION, Tokyo, JP;
Abstract
Current control sectionperforms PI control based on deviation between d-axis command current Id_cmd and d-axis detected current Id_det and deviation between q-axis command current Iq_cmd and q-axis detected current Iq_det. Neutral point potential control sectioncalculates corrected command voltage V_cmd' by addition of neutral point control compensation quantity V_cmp to three-phase command voltage V_cmd. Limiter LMToutputs limiter processed command voltage V_cmd″ by liming the output of corrected command voltage V_cmd′. Three-phase to two-phase converteroutputs feedback quantities Vd_back, Vq_back by three-phase to two-phase conversion of the limiter processed command voltage V_cmd″. Current control sectionperforms integral control in accordance with quantities resulting from addition of the feedback quantities Vd_back, Vq_back to the deviations. Accordingly, the three-phase neutral point clamed power conversion apparatus performing the PWM control suppresses interference between the current control and the neutral point potential control.