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On-site bus type alternating current motor driving device

A technology of AC motors and driving devices, applied in the direction of AC motor control, electrical components, control systems, etc., to achieve the effects of steepness and amplitude reduction, load insulation breakdown suppression, high efficiency and cost

Inactive Publication Date: 2012-10-03
TIANJIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the design problem of the CANopen driving device in the industrial system and provide a field bus type AC motor driving device

Method used

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  • On-site bus type alternating current motor driving device
  • On-site bus type alternating current motor driving device
  • On-site bus type alternating current motor driving device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] figure 1 The overall block diagram of the system. Among them, unit 1 is a CANopen communication interface unit, unit 2 is an input signal interface unit, and unit 3 is a three-phase AC motor drive interface unit. Connect the short-circuit protection circuit to the power port of each part. The range in the virtual frame is the designed motor drive device, which can be connected to the CANopen field bus system and drive the three-phase AC motor.

[0022] The CANopen communication interface unit of this system takes the AVR microprocessor AT90CAN128 with its own CAN controller as the core, and connects with the other two interface units on the basis of it to realize the functions of each part.

[0023] As can be seen from the above block diagram, the design of the system can be divided into three parts:

[0024] The first part is the input signal interface unit circuit, which is composed of an optocoupler isolation circuit. This part is mainly to send the external non-c...

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PUM

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Abstract

The invention provides a CANopen (control area network open) on-site bus type alternating current motor driving device which has the integrated functions of on-site bus communication and alternating current driving and comprises a CANopen communication interface unit, an input signal interface unit and a three phase alternative current motor driving interface unit, wherein the hardware structure of the CANopen communication interface unit includes a microprocessor (with a CAN controller) and a CAN transceiver and the CANopen communication interface unit is used for accomplishing the data communication with a CANopen bus by using a CANopen protocol stack code embedded in the microprocessor; the input signal interface unit is used for inputting a signal to transmit an input state to the microprocessor through an input optical coupling circuit; and after receiving the signal of the microprocessor, the three phase alternative current motor driving interface unit can drive a three phase alternative current motor directly.

Description

technical field [0001] The invention relates to the technical field of bus network communication, in particular to a CANopen motor drive device with integrated functions of field bus communication and AC motor drive. Background technique [0002] As an emerging industrial fieldbus protocol, CANopen is being used more and more widely, but it still has many aspects to be developed or is being developed, especially the development of the drive. At present, there are relatively mature development plans for CANopen at home and abroad, but when it comes to specific driving devices, few companies or institutions specially design load driving units on the basis of slave stations. Regarding the design of the CANopen driving device, most companies currently directly connect the driving device to the programmable controller or use the method of "CANopen + solid state relay", so that the load-bearing method can meet the requirements in small-scale applications. In the application of la...

Claims

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Application Information

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IPC IPC(8): H02P23/00
Inventor 陈在平贾超倪建云刘学伟
Owner TIANJIN UNIVERSITY OF TECHNOLOGY