US Patent Application 18192892. POWER CONVERTER simplified abstract
Contents
POWER CONVERTER
Organization Name
TOYOTA JIDOSHA KABUSHIKI KAISHA
Inventor(s)
TAKESHI Inoue of NISSHIN-SHI (JP)
AKIMASA Niwa of NISSHIN-SHI (JP)
JUNICHI Hasegawa of NISSHIN-SHI (JP)
POWER CONVERTER - A simplified explanation of the abstract
- This abstract for appeared for US patent application number 18192892 Titled 'POWER CONVERTER'
Simplified Explanation
This abstract describes a power converter that has multiple arms, each containing a semiconductor element. The converter also includes various detectors to measure temperature, voltage, and current. It also has a heat generation controller and a heat resistance estimator. The heat resistance estimator calculates the heat resistance of the semiconductor element based on the temperature difference between two states - one where the element is not generating heat and one where it is. The estimator takes into account the current passing through the element and the voltage across its terminals.
Original Abstract Submitted
A power converter includes multiple arms, a temperature detector, a voltage detector, a current detector, a heat generation controller, and a heat resistance estimator. Each of the multiple arms includes a target element being a semiconductor element. The heat resistance estimator determines a heat resistance of the target element based on a temperature difference between a first temperature of the target element and a second temperature of the target element, a current through the target element detected by the current detector, and a voltage across conduction terminals of the target element detected by the voltage detector. The first temperature is a temperature detected by the temperature detector in a state where the heat generation controller has not caused the target element to generate heat. The second temperature is a temperature detected by the temperature detector in a state where the heat generation controller has caused the target element to generate heat.
