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Memory motor winding multiplexing control method and system for flux linkage observation

A technology for memorizing motors and control methods, which is applied in control systems, motor control, vector control systems, etc., and can solve the problems of low utilization rate of magnetic modulation control systems

Active Publication Date: 2019-05-28
SOUTHEAST UNIV
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Problems solved by technology

Since the flux winding of the DC flux modulation memory motor only plays a role when the flux modulation operation is required, and is in a redundant state during most of the running time, the utilization rate of the entire flux modulation control system is low.

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  • Memory motor winding multiplexing control method and system for flux linkage observation
  • Memory motor winding multiplexing control method and system for flux linkage observation
  • Memory motor winding multiplexing control method and system for flux linkage observation

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Embodiment Construction

[0050] This embodiment provides a memory motor winding multiplexing control method for flux linkage observation. The control object is a DC magnetic modulation memory motor. The control process is as follows: figure 1 As shown, the armature winding and the DC magnetic winding are the parts installed in the motor; the three-phase inverter is driven by the vector control method through the space vector modulation technology (SVPWM), and the outer loop of the speed adopts the PI regulator, and the inner loop of the current adopts the Feedforward decoupling regulator, using the permanent magnet flux linkage value ψ obtained from the flux linkage observation pm Realize feed-forward decoupling; the magnetic modulation power converter adopts the H-bridge DC power converter structure. During the magnetic modulation period, the magnetic modulation power converter is driven by current chopping control to generate a magnetic modulation current in the DC magnetic modulation winding, thereb...

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Abstract

The invention discloses a memory motor winding multiplexing control method and system for flux linkage observation. The invention aims to solve the problem that the use efficiency of a magnetism adjusting winding of a traditional direct-current magnetism adjusting type memory motor is low due to the fact that the magnetism adjusting winding is in a redundant state in a non-magnetism-adjusting period. The method comprises the steps that 1, when the magnetization state of a memory motor needs to be adjusted, a magnetism adjusting current reference value is selected according to the motor rotating speed; 2, through current feedback control, the direct-current magnetism adjusting winding is driven to generate magnetism adjusting current so as to adjust the magnetization state of the permanentmagnet; 3, when the memory motor operates normally, induction voltage of the magnetism adjusting winding is collected and induction potential of the magnetism adjusting winding is extracted; and 4, apermanent magnet flux linkage value is calculated by using the induced potential of the magnetism adjusting winding for vector control of the motor. According to the invention, the flux-adjusting winding in a redundant state in a non-flux-adjusting period is used as a flux linkage observation function, so that the utilization efficiency of the direct-current flux-adjusting memory motor can be improved, and the dynamic performance and the anti-interference capability of a control system are improved.

Description

technical field [0001] The invention relates to the technical field of motor control, in particular to a memory motor winding multiplex control method and system for flux linkage observation. Background technique [0002] A variable flux memory machine (Variable Flux Memory Machine, VFMM) is a permanent magnet motor that widens the speed range by changing the magnetization level of the permanent magnet. This type of motor changes the magnetization state of the low-coercivity permanent magnet by applying an instantaneous magnetization current pulse through the armature winding or an additional magnetization winding, which overcomes the traditional permanent magnet synchronous motor (Permanent Magnet Synchronous Machine, PMSM) air gap magnetic field Problems that cannot be adjusted. Compared with hybrid excitation motors, memory motors do not require continuous field current, so there are almost no electrical field losses. As a new concept of permanent magnet motor, memory m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P21/00H02P21/14
CPCH02P2207/05H02P21/141H02P21/22H02P25/022H02P21/0003H02P21/12
Inventor 阳辉李光旭林鹤云吕舒康
Owner SOUTHEAST UNIV
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