نتایج جستجو برای: open phase fault
تعداد نتایج: 1029017 فیلتر نتایج به سال:
This study investigates the simple vector control of a 3-phase squirrel cage Induction Motor (IM) under open-circuit fault (faulty 3-phase IM). It was shown that it is needed to supply the stator windings with unbalanced currents to remove the oscillating term of the machine electromagnetic torque. The vector control system is based upon Field-Oriented Control (FOC) that has been adapted for th...
Efficiency improvement under faulty conditions is one of the main objectives of fault tolerant PM drives. This goal can be achieved by increasing the output power while reducing the losses. Stator copper loss not only directly affects the total efficiency, but also plays an important role in thermal stress generations of iron core. In this paper, the effect of having control on neutral point cu...
A novel fault phase selector for double-circuit transmission lines is presented. The fault type is determined with the superimposed components and steady state components of fault voltage. According to the determined fault type, auxiliary criteria based on the magnitude and phase difference of fault phase current is applied to judge whether inter-line fault happens or not. If inter-line fault h...
In some key areas, fault-tolerant control is usually needed in order to enable the motor operate continuously fault mode. Given that it difficult detect zero-sequence current of open winding permanent magnet synchronous after phase break occurs, traditional suppression strategy no longer applicable occurs. Therefore, a for common DC bus under proposed this paper. By establishing mathematical mo...
با توجه به این که در سیستم های صنعتی وقوع fault ممکن است منجر به خرابی کالا، خرابی دستگاه، افت عملکرد و یا تلفات جانی شود، شناسایی و تشخیص به موقع fault و همچنین جبران سازی آن از اهمیت کاربردی بسیار بالایی برخوردار می باشد. عمده ی سیستم های صنعتی را سیستم های غیر خطی و هایبرید با ورودی ها یا حالت های ناهمگون تشکیل می دهند. بنابراین شناسایی fault در این سیستم ها و تلاش برای جبران اثرات آن به کمک...
In the field of high-power electric drives, multiphase motors have advantages high power-density, excellent fault tolerance and control flexibility. But their decoupling modulation process are much more complicated compared with three-phase due to increased degree freedom. Finite set model predictive can reduce difficulties controlling six-phase because it does not require process. this paper, ...
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