POWER SUPPLY CHAIN FOR A SYNCHRONOUS ELECTRICAL MACHINE, ELECTRICAL DRIVE SYSTEM INCLUDING SUCH A CHAIN AND CONTROL PROCESS FOR SUCH A CHAIN

摘要

This supply chain (16) having M supply outputs (31) for supplying an electrical machine (14) synchronous with M phases, comprises: - a converter (22) of a direct current input in a polyphase alternating current, - a storage bank, - means for detecting (30) a short circuit external or internal to the electric machine (14), - a device for isolating (26) from the electric machine (14) against overvoltages and / or overcurrents of said polyphase alternating current, and - control means (28) of the converter (22) and of the isolation device (26). This supply chain (16) comprises short-circuiting means (27) adapted to connect the M supply outputs (31) to each other, the control means (28) being suitable for controlling the switching means. in short circuit (27) for carrying out this operation.