A Segmented Tilt Modular Switched Flux Linear Motor

Abstract

The present invention discloses a subsection slanted modularization switch magnetic flux linear motor. The motor comprises a primary structure, a secondary structure, a winding and a position sensor. The primary structure comprises two primary segments, each primary segment comprises k primary modules, each primary module comprises m primary units and m-1 connection blocks, and each connection is arranged between any two adjacent primary units; each primary unit comprises two first lamination segments, one second lamination segment and two permanent magnets, and the second lamination segment is arranged between two adjacent lamination segments; and the permanent magnets are arranged between the first lamination segments and the second lamination segment. The subsection slanted modularization switch magnetic flux linear motor divides each primary segment into k primary modules, each primary module is divided into m primary units, and each primary unit is formed by two first lamination segments and one lamination segment to reduce the magnetic circuit coupling between each phase winding and improve the fault-tolerant ability and the permanent magnet utilization efficiency.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a structure of a segmented tilting modular switch flux permanent magnet linear motor. Background technique [0002] In the case of linear drive, the rotary motor needs to use an intermediate conversion device to convert the rotary motion into a linear motion, resulting in increased system weight, high noise, high maintenance costs, and low reliability. Therefore, direct use of linear motors can overcome the unnecessary shortcomings of the system. Permanent magnet synchronous linear motors have been extensively studied due to their high efficiency, high power density, and easy control. The armature windings and permanent magnets of traditional permanent magnet linear motors are installed in the primary and secondary respectively, and the cost of permanent magnets is relatively high, such as long secondary applications such as rail transit will undoubtedly lead to increased system c...

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Problems solved by technology

Although the type structure reduces the amount of permanent magnets, in Adding excitation windings to the middle teeth of the type can improve the field-weakening speed expansion capability of the linear motor, but the magnetic circuit between the windings passes through The yokes of the type iron core are coupled with each other, and the mutual inductance is large, resulting in poor fault tolerance performance of the motor. This shortcoming also exists in the Type Structure Switching Flux Linear Motor

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