Hybrid multi-level inverter for permanent magnet traction system and control method thereof
A hybrid multi-level and inverter technology, applied in the field of traction systems, can solve the problems of poor fault tolerance, large volume and weight, and low switching frequency, and achieve the effect of strong fault tolerance, high fault tolerance, and reduced quantity
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[0029] The specific embodiments of the present invention are described below so that those skilled in the art can understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes Within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are included in the protection list.
[0030] Such as figure 1 and image 3 As shown, the hybrid multilevel inverter includes at least one single-phase bridge arm 2 and a DC input circuit 1 that provides a DC voltage to the single-phase bridge arm 2; during implementation, the preferred DC side input circuit of this solution includes electrolytic capacitors coupled in series C d1 and electrolytic capacitor C d2 , electrolytic capacitor C d1 The positive term...
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