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Motor starting method and device

A technology of quadrature axis current and direct axis current, which is applied to the starter of a single synchronous machine, motor generator/starter, etc., and can solve problems such as low success rate

Active Publication Date: 2018-09-14
SICHUAN HONGMEI INTELLIGENT TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] It can be seen from the above description that when using the motor starting method in the prior art to start the motor, the success rate is low

Method used

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Embodiment Construction

[0123] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work belong to the protection of the present invention. scope.

[0124] Such as figure 1 As shown, the embodiment of the present invention provides a method for starting a motor, and the method may include the following steps:

[0125] Step 101: preset the control period;

[0126] Step 102: Control the motor to execute the positioning stage and the asynchronous dragging stage in sequence;

[0127] Step 103: In the...

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Abstract

The invention provides a motor starting method and device. The method comprises steps as follows: a control cycle is set in advance; a motor is controlled to sequentially execute a positioning stage and an asynchronous drag stage; at a transition stage between the asynchronous dragging stage and a position sensorless speed closed-loop control stage, the followings are executed: according to the control cycle, a command value of direct axis current of the motor is controlled to change in a manner of negative correlation with time, and according to the control cycle, a command value of alternating axis current of the motor is controlled to change in a manner of positive correlation with time; direct axis current of the motor is controlled in real time according to the current command value of the direct axis current, and alternating axis current of the motor is controlled in real time according to the current command value of the alternating axis current; after the transition stage, themotor is controlled to execute the position sensorless speed closed-loop control stage. By means of the motor starting method and device, the success rate of motor starting can be increased.

Description

technical field [0001] The invention relates to the technical field of motor control, in particular to a method and device for starting a motor. Background technique [0002] The start of the motor generally includes the positioning stage, the asynchronous drag stage, the transition stage from the asynchronous drag stage to the sensorless speed closed-loop control stage, and the position sensorless speed closed-loop control stage. [0003] In the prior art, when entering the transition phase, the current command value of the direct axis current is directly switched to the required target direct axis current, and the current command value of the quadrature axis current is directly switched to the required target quadrature axis current. This control method can realize smooth start when the load of the motor is small. However, when the load of the motor is large, since the speed of the motor rotor of the motor will drop greatly due to the influence of the load, it is difficu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P1/50H02P1/52
CPCH02P1/50H02P1/52
Inventor 王声纲陈跃潘军唐婷婷王璠徐明章张新立
Owner SICHUAN HONGMEI INTELLIGENT TECH CO LTD
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