MUMBAI, India, Sept. 22 -- Intellectual Property India has published a patent application (202617086281 A) filed by Bosch Home Comfort Japan, Inc. on July 14, 2026, for Power Conversion Device And Air Conditioner.
Inventors include Shimane Keito; and Tsukii Koji.
The application for the patent was published on September 18, 2026, under issue no. 38/2026.
Abstract: The present invention provides, for example, a highly reliable power conversion device. A power conversion device (100) comprises a converter circuit (10), a smoothing capacitor (20), an inverter circuit (50), an inverter control circuit (61), an overvoltage protection circuit (40), and an overvoltage protection control circuit (62) that, when a DC voltage of the smoothing capacitor (20) reaches a prescribed value after the inverter circuit (50) has stopped, performs overvoltage protection control for switching a switching element (41) to an on state, wherein: after the overvoltage protection control is initiated, the inverter control circuit (61) performs winding short-circuit control for turning on all phases of one of an upper arm and a lower arm of the inverter circuit (50) and turning off all phases of the other; and the winding short-circuit control is initiated on the basis of a prescribed state quantity correlating with the cumulative heat generation amount of a resistance element (42) accompanying the overvoltage protection control.
Disclaimer: Curated by HT Syndication.
