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Controller for permanent magnet motor

A technology for permanent magnet motors and control devices, which is applied in the direction of starting devices, single motor speed/torque control, and measuring devices, and can solve problems such as inability to control synchronously

Inactive Publication Date: 2003-12-03
TOSHIBA ELEVATOR KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

therefore, Figure 7 The system shown cannot synchronously control a motor with this value of pole pairs 1

Method used

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  • Controller for permanent magnet motor
  • Controller for permanent magnet motor
  • Controller for permanent magnet motor

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Experimental program
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Embodiment Construction

[0036] Preferred embodiments of the present invention are explained below with reference to the accompanying drawings.

[0037] figure 1 It is a block diagram of the structure of the control device of the permanent magnet motor according to the first embodiment of the present invention; and Figure 7 The same reference numerals in the reference numerals denote the same components. exist figure 1 Among them, the rotation position detector 2 is connected with the motor 1, and the rotation phase signal φ obtained by the rotation position detector 2 is converted into a rotation angle signal φ' by the rotation angle converter 5, and the rotation angle converter 5 is connected with the rotation angle signal memory 8 and the rotation angle correction device 7 Connection; After the magnetic pole phase converter 6 converts the signal into a magnetic pole phase signal θ, the signal enters the motor controller 4 that drives the motor 1 .

[0038] The corner signal memory 8 immediatel...

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Abstract

Disclosed is a control device of a permanent magnet electric motor which makes it possible to synchronously control the permanent magnet electric motor even when the magnetic pole logarithm of the permanent magnet electric motor is not an integral multiple of the number of repeats of a rotation phase signal during one rotation. <??>The control device creates a magnetic pole phase signal based on a rotation phase signal, obtained by detecting the rotation of an output axis of the permanent magnet electric motor, and synchronously controls the permanent magnet electric motor in compliance with the magnetic pole phase signal; the control device comprises a first signal conversion unit which converts the rotation phase signal to a rotation angle signal which is proportional to the rotation angle each time a rotor of the permanent magnet electric motor rotates once, and a second signal conversion unit which converts the rotation angle signal to the magnetic pole phase signal, repeated a number of times equal to a magnetic pole logarithm of the permanent magnet electric motor.

Description

technical field [0001] The present invention relates to a control device for a permanent magnet synchronous motor (hereinafter referred to as "permanent magnet motor"). The control device generates a magnetic pole phase signal of the rotor based on a rotation phase signal, and synchronously controls the permanent magnet motor according to the magnetic pole phase signal, wherein the rotating The phase signal is obtained by detecting the rotation of the output shaft of the permanent magnet motor. Background technique [0002] Figure 7 is a block diagram of the structure of a control device for a permanent magnet motor, which drives, for example, an elevator. exist Figure 7 , the rotational position detector 2 is connected to the motor 1. The rotation position detector 2 detects the rotation position of the motor 1, and outputs the rotation phase signal φ, in which the permanent magnet motor has the signal number repeated twice in one revolution of the motor, and the rotatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D5/245H02P6/06H02P6/08H02P6/12H02P6/16H02P6/20
CPCH02P6/20H02P6/16
Inventor 秋月博光
Owner TOSHIBA ELEVATOR KK