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Electric 4-Wheel Drive Traction Boost Enhancement And Fault Management

IP.com Disclosure Number: IPCOM000010922D
Publication Date: 2003-Jan-31

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The IP.com Prior Art Database


Electric four wheel drive vehicles performance requirements of very wide contant power speed range can be met by intorducing a commutator switch (1) between the traction motor (2) and the power electronics controller (3). The purpose of (1) is to reconfigure the motor windings from Series to Parallel as shown in Fig. 2 (or from Y to ∆ if desired). The commutator also offers the option to open the connection between the machine and the power electronics so that galvanic isolation can be achieved.