Single-winding bearingless motor torque and suspension force direct controller and construction method

Abstract

The invention discloses a single-winding bearingless motor torque and suspension force direct controller and a construction method. The controller comprises a reference value calculation part and an observation value calculation part, wherein the observation value calculation part comprises a winding flux observer, a suspension force observer, a torque observer and two matrix transform modules; output of the first matrix transform module is connected with input of the winding flux observer; the output of the winding flux observer is connected with the suspension force observer and the torque observer respectively; the output of the second matrix transform module is connected with the winding flux observer and the torque observer respectively; a observed winding real-time flux is applied to the torque observer, the suspension force observer and a torque and suspension force voltage reference value generator; a voltage static coordinate instruction value is generated in the torque and suspension force voltage reference value generator according to a flux amplitude instruction value, real-time winding torque component flux amplitude and phase and an actual feedback current; and the torque and rotor radial suspension force are directly controlled.

Description

technical field [0001] The invention belongs to the technical field of electric drive control equipment, is a multi-variable nonlinear single-winding double-three-phase bearingless motor torque and suspension force direct controller technology, and is suitable for high-performance control of multi-phase bearingless permanent magnet motors. Background technique [0002] The traditional bearingless permanent magnet motor adopts a double-winding structure. The torque winding and the suspension force winding are embedded inside the motor. Two sets of windings are needed to realize the bearingless operation of the motor, which inevitably makes the internal structure of the motor complex and the winding takes up more space. space, resulting in loss. The single-winding bearingless permanent magnet motor inherits the characteristics of the traditional double-winding bearingless motor, such as high power density, no lubrication, no wear, and no mechanical noise. At the same time, the...

AI Technical Summary

Problems solved by technology

However, due to too many switching tubes in the power system, the control process is relatively complicated, and there are also disadvantages such as large current fluctuations and large power losses.

Images