Experimental verification of winding switching technique to enhance maximum speed operation of surface mounted permanent magnet machines

PROJECT TITLE :

Experimental verification of winding switching technique to enhance maximum speed operation of surface mounted permanent magnet machines

ABSTRACT:

Flux weakening is an inevitable demand in the operation of variable speed permanent magnet (PM) machines for high-speed applications due to inverter voltage limits. A replacement winding switching technique is experimentally validated during this study that may extend the speed range of such PM machines. A drive topology is proposed that utilises two current regulated voltage source inverters to manage the machine in an exceedingly dual inverter fed configuration before transitioning into an open winding configuration once winding switching. The proposed drive topology extends the constant torque region of the machine and boosts its maximum output power capability. Complete experimental results are provided to demonstrate the effectiveness of the proposed machine drive system for continuous operation over the entire speed vary.

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