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Method for detecting position signal of switch reluctance machine

A technology of switched reluctance motor and detection method, which is applied in the direction of electronic commutator, etc., can solve problems such as misoperation of switched reluctance motor, and achieve the effect of stable control

Inactive Publication Date: 2003-04-23
LG ELECTRONICS (TIANJIN) APPLIANCES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, if the position signal from the position sensor is used to control the drive of the switched reluctance motor, if there is no abnormality in the position signal from the position sensor, it will cause a problem of malfunction of the switched reluctance motor.

Method used

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  • Method for detecting position signal of switch reluctance machine
  • Method for detecting position signal of switch reluctance machine
  • Method for detecting position signal of switch reluctance machine

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Embodiment Construction

[0009] Specific embodiments are given below in conjunction with the drawings to further illustrate how the present invention is implemented.

[0010] figure 1 It is a power supply circuit and drive circuit diagram of a switched reluctance motor with a general 6 / 4 structure. As shown in the figure, it has the following structure: a control power supply device 11 that sequentially applies voltage to the motor coil; and applies a signal to the control power supply device A microcomputer 12 that changes the voltage control between 15 volts and 40 volts; detects the position of the rotor in the motor, and outputs position sensors Sa, Sb, and Sc of the rotor position signal, and performs switching devices based on the above-mentioned rotor position signal The basic drive circuit 13 composed of PNP switching devices with on / off switching; the output interface of the computer 12 is connected to the power supply 11, the capacitor C1 and the resistor R 2 Connected in parallel, both ends a...

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Abstract

The present invention relates to a method for detecting position signal of switch reluctance machine, and is characterized by that on the equipment consisting of power supply circuit, microcomputer for controlling said power supply circuit and driving circuit it utilzies a position sensor to detect the position of rotor, and adds the pulse signal related to said position on the correspondent switch device and measures the current value on the correspondent switch device after a certain time, them compares the measured current value with reference current value to obtain compared result, according to the compared result said invention can adopt the mode of properly adding pulse signal and regulating pulse current to make said electric machine normally operate.

Description

Technical field [0001] The invention relates to a method for detecting whether the position signal of a switched reluctance motor is abnormal, in particular to detecting whether the position signal of the switched reluctance motor is abnormal or not under the normal operation state of the switched reluctance motor to make the switched reluctance motor drive more stably method. Background technique [0002] Generally, a switch reluctance motor must have a position signal when driving, and the position sensor can accurately grasp the starting point of the change of the forward / reverse rotation of the motor, and can control the forward / reverse rotation of the switched reluctance motor. For the N-phase switched reluctance motor, N position sensors are used to master and control the forward / reverse rotation of the switched reluctance motor. Generally, in order to save costs, a three-phase switched reluctance motor uses only one position sensor. The switched reluctance motor tracks and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P6/16
Inventor 金相永
Owner LG ELECTRONICS (TIANJIN) APPLIANCES CO LTD
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