Unlock instant, AI-driven research and patent intelligence for your innovation.

Method, device and electronic device for determining bus current of motor controller

A motor controller and bus current technology, which is applied in the control of electromechanical transmission, motor generator control, AC motor control, etc., can solve the problems of cost increase, and achieve the effect of cost saving and simple calculation process

Active Publication Date: 2022-05-13
睿驰电装(大连)电动系统有限公司 +1
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the object of the present invention is to provide a method, device and electronic equipment for determining the bus current of a motor controller, so as to alleviate the technical problem of cost increase in the prior art when determining the bus current of a motor controller

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method, device and electronic device for determining bus current of motor controller
  • Method, device and electronic device for determining bus current of motor controller
  • Method, device and electronic device for determining bus current of motor controller

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] According to an embodiment of the present invention, an embodiment of a method for determining a bus current of a motor controller is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings may be implemented in a computer system such as a set of computer-executable instructions. and, although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that herein.

[0059] figure 2 is a flowchart of a method for determining the bus current of a motor controller according to an embodiment of the present invention, such as figure 2 As shown, the method includes the following steps:

[0060] Step S202, obtaining the rotor position, phase current, target output torque of the motor at the current moment and the bus voltage of the motor controller at the current moment, wherein the current moment represents the moment when the PWM counter reaches the preset value...

Embodiment 2

[0099] The embodiment of the present invention further provides a device for determining the bus current of a motor controller, and the device for determining the bus current of the motor controller is mainly used to execute the method for determining the bus current of the motor controller provided by the above content of the embodiment of the present invention. The following The device for determining the busbar current of the motor controller provided by the embodiment of the present invention will be specifically introduced.

[0100] Figure 10 is a schematic diagram of a device for determining the bus current of a motor controller according to an embodiment of the present invention, such as Figure 10 As shown, the device for determining the bus current of the motor controller mainly includes: an acquisition unit 10, a first calculation unit 20, a determination unit 30, a collection unit 40 and a second calculation unit 50, wherein:

[0101] an acquisition unit, configur...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention provides a method, device and electronic equipment for determining the bus current of a motor controller, comprising: obtaining the rotor position, phase current, target output torque of the motor at the current moment and the bus voltage of the motor controller at the current moment; Position, phase current, target output torque and bus voltage calculate the on / off time of the three-phase upper bridge inverter in the next carrier cycle; determine the acquisition time of the motor phase current according to the on / off time of the three-phase upper bridge inverter ; When the collection time comes, collect the phase current of the motor; calculate the bus current of the motor controller based on the collected phase current of the motor. When the method of the present invention determines the bus current of the motor controller, there is no need to add an additional current sensor at the position of the bus of the motor controller, and the information detected by the devices in the existing motor controller can be used to calculate the bus of the motor controller current, saving costs, and the calculation process is simple.

Description

technical field [0001] The present invention relates to the technical field of motor control, and in particular, to a method, device and electronic device for determining the busbar current of a motor controller. Background technique [0002] like figure 1 The motor controller shown ( figure 1 The circuit diagram composed of other devices except the motor PMSM is the motor controller, in which the part composed of PWM1H, PWM1L, PWM2H, PWM2L, PWM3H, PWM3L is the inverter) The system topology diagram, ABC three points The current is the motor phase current, and the current at point D is the bus current of the motor controller. In motor control, by detecting the rotor position of PMSM (that is, permanent magnet synchronous motor) and the voltage at point D in real time, the duty of the six-way PWM is controlled in real time. ratio, so as to control the current size of the three points ABC, so that the motor can output the desired torque. [0003] Since the motor controller b...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H02P21/14H02P27/08
CPCH02P21/14H02P27/08
Inventor 王建一王忠健高鹏
Owner 睿驰电装(大连)电动系统有限公司