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

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

A technology of motor controller and bus current, which is applied in the control of electromechanical transmission, motor generator control, AC motor control, etc., can solve problems such as cost increase

Active Publication Date: 2021-01-26
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 and device for determining bus current of motor controller and electronic equipment
  • Method and device for determining bus current of motor controller and electronic equipment
  • Method and device for determining bus current of motor controller and electronic equipment

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 the bus current of a motor controller is provided. It should be noted that the steps shown in the flow chart of the accompanying drawings can 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 shown or described 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 and bus voltage of the motor controller at the current moment of the motor at the current moment, wherein the current moment represents the moment when the PWM counter reaches...

Embodiment 2

[0099] The embodiment of the present invention also provides a device for determining the bus current of the motor controller. The device for determining the bus current of the motor controller is mainly used to implement the method for determining the bus current of the motor controller provided in the above content of the embodiment of the present invention, as follows The device for determining the bus current of the motor controller provided by the embodiment of the present invention is 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, an acquisition unit 40 and a second calculation unit 50, wherein:

[0101] The acquisition unit is used to acquire t...

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 invention provides a method and device for determining bus current of a motor controller and electronic equipment. The method comprises the steps: acquiring the rotor position, the phase current and the target output torque of a motor at the current moment and the bus voltage of the motor controller at the current moment; calculating the on / off time of the three-phase upper bridge inverter inthe next carrier period according to the rotor position, the phase current, the target output torque and the bus voltage; determining 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 arrives, collecting the phase current of the motor; and calculating the bus current of the motor controller based on the collected motor phase current. According to the method, when the bus current of the motor controller is determined, a current sensor does not need to be additionally arranged at the bus position of themotor controller, the bus current of the motor controller can be obtained through calculation according to information detected by devices in an existing motor controller, the cost is saved, and thecalculation process is simple.

Description

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

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
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