Multi-motor power balance control method, electronic device and multi-motor transmission system

A technology of power balance and control method, which is applied in the direction of control system, motor speed or torque control, multiple motor speed adjustment, etc., can solve problems such as inability to guarantee normal operation, and achieve equal distribution and high redundancy Effect

Active Publication Date: 2020-10-13
CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention is based on the fact that the existing multi-motor synchronous control methods need to be realized through signal mutual transmission. When there is no signal interconnection in the drive unit or the transmission of interconnected signals is abnormal, the technical problem that normal operation cannot be guaranteed, proposes A multi-motor power balance control method, device, storage medium, electronic equipment and multi-motor transmission system

Method used

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  • Multi-motor power balance control method, electronic device and multi-motor transmission system
  • Multi-motor power balance control method, electronic device and multi-motor transmission system
  • Multi-motor power balance control method, electronic device and multi-motor transmission system

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Embodiment 1

[0055] According to an embodiment of the present invention, a multi-motor power balance control method is provided, image 3 It shows a schematic flowchart of a multi-motor power balance control method proposed in Embodiment 1 of the present invention, as shown in image 3 As shown, the multi-motor power balance control method may include: Step 110 to Step 150 .

[0056] In step 110, the current angular velocity and the preset initial given angular velocity of each motor are obtained.

[0057] Here, the current angular velocity of the motor refers to the actual angular velocity when the motor is running, which can be obtained through a speed sensor. The initial given angular velocity refers to the initial given angular velocity issued by the host computer, and the host computer issues the initial given rotational speed, and the converter controls the output rotational speed of the motor according to the initial given rotational speed. In actual operation, due to uneven load ...

Embodiment 2

[0094] According to an embodiment of the present invention, a multi-motor power balance control device is also provided, including:

[0095] An acquisition module configured to acquire the current angular velocity of each motor and a preset initial given angular velocity;

[0096] The first output torque calculation module is configured to determine the first output torque of each motor according to the current angular velocity corresponding to each motor and the initial given angular velocity;

[0097] An angular velocity variation calculation module configured to determine the angular velocity variation of each of the motors according to the first output torque of each of the motors;

[0098] The corrected angular velocity calculation module is configured to obtain the corrected angular velocity of each motor according to the angular velocity variation corresponding to each motor and the initial given angular velocity;

[0099] The control module is configured to control th...

Embodiment 3

[0107] According to an embodiment of the present invention, a multi-motor transmission system is also provided, including:

[0108] At least two motors for driving the same load;

[0109] A memory for storing program codes for implementing the multi-motor power balance control method as described in any one of the above embodiments;

[0110] Each of the motors is connected to a converter, and the controller of the converter is used to execute the program code stored in the memory to control the converter to adjust the angular velocity of the corresponding motor so that The angular velocity of multiple motors is consistent.

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Abstract

The invention discloses a multi-motor power balance control method, an electronic device and a multi-motor transmission system, and relates to the technical field of motor control, and the method comprises the steps: obtaining the current angular speed of each motor and a preset initial given angular speed; determining a first output torque of each motor according to the current angular speed corresponding to each motor and the initial given angular speed; determining the angular velocity variation of each motor according to the first output torque of each motor; obtaining a correction angularvelocity of each motor according to the angular velocity variation corresponding to each motor and the initial given angular velocity; and controlling the angular speed of the corresponding motor according to the corrected angular speed. The beneficial effects of the method are that the method can achieve the power balance control of a plurality of motors under the condition that there is no needto add hardware equipment or employ a protocol for data transmission, and achieves the average distribution of torque, and moreover, the redundancy is high, and the phenomenon of galloping of the slave motor caused by failure of the master motor in the master-slave mode can be avoided.

Description

technical field [0001] The invention belongs to the technical field of motor control, and in particular relates to a multi-motor power balance control method, electronic equipment and a multi-motor transmission system. Background technique [0002] In the AC transmission system, the multi-motor system has the following three connection methods: parallel and independent operation of the motors; flexible connection, such as printing machines, tape machines, etc.; hard shaft rigid connection, all motors are forcibly synchronized, and the output torque is coupled to each other. The current multi-motor synchronous control schemes include master-slave control, cross-coupling control, virtual axis control, etc., often using speed, torque, and current as control parameters. All of these synchronous control methods need to be realized through signal mutual transmission. If there is no signal interconnection in the drive unit or the transmission of interconnected signals is abnormal, ...

Claims

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Application Information

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IPC IPC(8): H02P5/485H02P5/54
CPCH02P5/485H02P5/54Y02T10/72
Inventor 胡仙梅文庆文宇良胡亮付翔宇
Owner CSR ZHUZHOU ELECTRIC LOCOMOTIVE RES INST
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