Patent application number | Description | Published |
20090033357 | Winding fault detection system - A control system is disclosed. The control system has an electric machine coupled to provide power to or receive power from a DC bus and a controller in communication with the electric machine and the DC bus. The controller is configured to receive a voltage from the DC bus, compare the voltage from the DC bus to a characteristic indicative of a fault of at least one winding of the electric machine, and take a precaution based on the comparison. | 02-05-2009 |
20100165575 | Electronics component packaging for power converter - Assembling a power converter for a multiple phase electric drive propulsion system in a machine includes arranging a plurality of rectangular capacitor units of a capacitor subassembly for conditioning electrical power in the power converter in a first packaging arrangement. In the first packaging arrangement, major capacitor axes of each one of the capacitor units are co-linear with one another and minor capacitor axes of each one of the capacitor units are oriented parallel but not co-linear with one another. Assembling the power converter further includes arranging a plurality of IGBT modules of a transistor subassembly for power switching in the power converter in a second packaging arrangement. In the second packaging arrangement major module axes of each one of the IGBT modules are oriented parallel but not co-linear with one another and minor module axes of each one of the IGBT modules are co-linear with one another. The capacitor subassembly and the transistor subassembly are supported in the first packaging arrangement and in the second packaging arrangement for service in a power converter housing. | 07-01-2010 |
20100232111 | Power Converter - A power converter assembly includes a housing and at least one transistor module. The housing has a liquid cooled heat transfer surface. The at least one transistor module is mounted directly to the liquid cooled heat transfer surface and positioned at least partially within the housing. | 09-16-2010 |
20140210208 | Dual Generator Single DC Link Configuration for Electric Drive Propulsion System - A machine is described that includes an electric drive for propelling the machine along a ground surface. The machine includes an electric power supply system configured to deliver operating electrical power to the electric drive. The electric power system includes a first generator and a second generator. The electric power system also includes a first rectifier coupled to the first generator and having a first direct current (DC) output and a second rectifier coupled to the second generator and having a second DC output. Both the first DC output and the second DC output are coupled to the single DC bus, thereby providing an arrangement for the first rectifier and the second rectifier to simultaneously provide power to the single DC bus. The electrical power system also includes a first inverter/controller coupled to the single DC bus and configured to provide a controlled alternating current to a first motor. | 07-31-2014 |