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:
May. 06, 2025
Filed:
May. 05, 2022
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Takaharu Hagiwara, Okazaki, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota, JP;
Abstract
A power conversion system that performs power conversion between a power supply and a load includes a pair of input ends, a pair of output ends, reactor, diode, switch, capacitor, current sensor, and control unit. The control unit is configured to perform a diagnostic process to diagnose deterioration of the capacitor. The diagnostic process includes a switching process to add an alternating-current component that fluctuates at a predetermined frequency to a voltage applied from the power supply to a series circuit of the reactor and the capacitor, by repeatedly turning on and off the switch, a specifying process to specify the phase difference or gain which an alternating-current component that appears in the current measured by the current sensor has, relative to the added alternating-current component, and a determining process to determine whether the phase difference or gain specified by the specifying process is within a normal range.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile