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In this paper, we will deal with the efficiency and Power factor improvement of a 2.2kW, 2-pole, three-Phase Line start permanent magnet synchronous motor (LSPM) using the difference in d-axis inductance (Ld) and q-axis inductance (Lq). The efficiency improvement can be effectively achieved by designing optimization of the rotor structure using the response surface method and finite element method...
This paper studies minimization of cogging torque in fractional-slot winding axial flux PM machines without skewing rotor magnets or displacing stator slots. Fractional winding has small cogging torque which is highlight for applications such as wind turbines. Cogging torque is caused by interaction between rotor magnets and stator core. The axial flux PM machine has an unique structure that the slot...
This paper proposes considering nonlinear dynamic characteristics method stroke of linear compressor and comparison with experimental results. Pressure on stroke and current function is shown as springs and dampers. And inductance and the motor constant are mathematical modeled as a function of the stroke and the current for a flux linkage. Dynamics characteristics were interpreted through mathematical...
Both IEC 61850 and IEC 61970 define the access mechanism to the substation electric utility's data and data architecture. But they use a different approach in the access mechanism. IEC 61850 is defined from the internal communication standpoint whereas IEC 61970 is from the substation management standpoint. Thus, harmonization is required to integrate both sides. In this paper, we'll discuss about...
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