Research on Minimum Copper Loss Control Strategy for Open Winding Permanent Magnet Synchronous Motor
The open winding permanent magnet synchronous motor is driven by two sets of inverters and has the characteristics of high power and torque,which is applied to electric vehicles.Due to the extremely im-portant energy consumption for electric vehicles,research has been conducted on reducing the copper con-sumption of open-winding permanent magnet synchronous motors,and a changeable decoupling angle modu-lation strategy based on this system has been proposed.It took the angle(decoupling angle)between the output voltage vectors of two sets of inverters as the control variable,and used tree-seed optimization algo-rithm to select the optimal decoupling angle based on different load states of the motor,so as to reduce the copper loss of the open winding permanent magnet synchronous motor.Through simulation verification,un-der light load conditions,the copper consumption can be reduced by 25％,proving the superiority of this strategy and providing theoretical support for controlling the operating losses of electric vehicles.
open winding permanent magnet synchronous motordecoupling angletree species optimiza-tion algorithmcopper consumption
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