Inverter power supply vehicle assistant load faulty change-over circuit

• Main Author: CHEN ANJUN
• Format: Patent
• Language: Chinese; English
• Published: 11.08.2010
• Subjects: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION; CONTROL OR REGULATING SYSTEMS IN GENERAL; CONTROLLING; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS; PERFORMING OPERATIONS; PHYSICS; REGULATING; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRANSPORTING; VEHICLES IN GENERAL

The invention provides a locomotive load failure switching circuit, the power of which is supplied by an inverter. The connection relation of the switching circuit is changed according to the existing circuit. When one inverter occurs failure, a corresponding contactor thereof is disconnected, the inverter is separated from a load group which is then transferred and power is supplied by a corresponding auxiliary inverter of other loads which are connected with the load in parallel; when a certain inverter occurs failure, the contactor 9KM is closed to lead a load 2 and a load 3 to be connected in parallel, and one of other inverters is used for supplying power. By ingenious switching of the circuit structure and the recombination of the loads, the operation requirement of the locomotive can be ensured to be met under the condition that the auxiliary inverter occurs failure.