Control method, control device and controller

A control method and reference signal technology, applied in control systems, motor control, electrical components, etc., can solve problems such as device or system damage, and achieve the effect of providing accurate and reliable overcurrent protection

Active Publication Date: 2020-11-27
HANGZHOU XIANTU ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In the field of circuit control technology, when the current exceeds a certain limit, device or system damage will occur

Method used

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  • Control method, control device and controller
  • Control method, control device and controller
  • Control method, control device and controller

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Embodiment Construction

[0055] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0056] In the compressor control system, in the standby mode, the compressor driving current is 0, which corresponds to a sampling signal V sf . When the system is running, if the current reaches an overcurrent protection value, the corresponding sampling signal Vs will exceed the sampling signal V sf An amplitude A; when designing the system, it can be designed that when the current sampling signal is greater than (sampling signal V sf +amplitude A), overcu...

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Abstract

The embodiment of the invention provides a control method, a control device and a controller. The control method comprises the following steps: determining a reference signal Err_AD; obtaining a digital sampling signal V1 of the motor driving current in a system operation mode; comparing the digital sampling signal V1 with the reference signal Err_AD; judging whether overcurrent occurs or not according to a comparison result; and if the overcurrent occurs, controlling the motor driving current to be reduced. According to the invention, a standby standard signal in the standby mode of the system can be automatically acquired, so that an accurate reference signal is provided, and the reliability of overcurrent protection is further ensured.

Description

[0001] This application claims the priority of a Chinese patent application with an application date of May 27, 2019, an application number of 201910443692.X, and an invention titled "Reference Signal Determination Method, Overcurrent Protection Method, Device, and Controller", the entire content of which Incorporated in this application by reference. technical field [0002] The present application relates to the technical field of circuit control, and more specifically, relates to a control method, a control device and a controller related to overcurrent protection. Background technique [0003] In the field of circuit control technology, when the current exceeds a certain limit, device or system damage will occur. Contents of the invention [0004] In view of this, the present application provides a control method, device and controller, which can realize overcurrent protection. [0005] In order to solve the above technical problems, the application adopts the followi...

Claims

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Application Information

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IPC IPC(8): H02P29/032
CPCH02P29/032
Inventor 赵鸣徐婉
Owner HANGZHOU XIANTU ELECTRONICS
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