Switched reluctance motor variable winding driving system and online soft switching method

Abstract

The invention discloses a switched reluctance motor variable winding driving system and an online soft switching method, and belongs to the field of online soft switching. The system comprises a controller, a driving module, a power converter and a variable winding module, the variable winding module provided by the invention can change the connection mode of each coil in the phase winding of theswitched reluctance motor on line. According to the invention, a switched reluctance motor driving topological structure with online winding series-parallel connection switching capability is combinedwith an online soft switching method; through the variable winding module, the connection mode of the phase windings of the switched reluctance motor is changed on line, so that the control of the phase inductance value is realized, and the optimization of the torque performance of the motor at a low speed and the performance improvement of the motor at a high rotating speed are effectively realized; on-line series-parallel connection switching and fault winding removal of a winding coil are carried out by utilizing an interval with zero phase current of the switched reluctance motor, so thaton-line soft switching is realized, and the speed adjustment range and the motor fault tolerance capability are expanded.

Description

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AI Technical Summary

Benefits of technology

This technology allows for better control on an electric machine's power output without sacrificing its ability to handle fast speeds or large changes in load demand. It achieves this through various techniques such as changing the number of turns per unit area (N/m2) within each section, adjustable inductor elements inside certain sections, and varying the amount of magnetic material used while still maintaining their effectiveness across multiple failure scenarios. Additionally, if one part fails another part will be able to switch back into service even after being restored from previous operations. Overall, these improvements improve the overall functionality and safety of electrical machines.

Problems solved by technology

This patented technical problem addressed in this patents describes how current methods of switching between different types of coils can result in insufficient voltage across certain parts of the machine due to increased resistance caused by heavy metals like iron (Fe) that may be harmful if exposed even temporarily).

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