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

Frequency converter control method

A control method and frequency converter technology, applied in control systems, AC motor control, electrical components, etc., can solve problems such as low drive efficiency and achieve the effect of improving application efficiency

Active Publication Date: 2020-05-08
LS INDAL SYST WUXI
View PDF7 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present disclosure is to provide a control method for a frequency converter for converting power from solar cells into alternating current, for overcoming the problem of low driving efficiency due to limitations and defects of related technologies at least to a certain extent

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
  • Frequency converter control method
  • Frequency converter control method
  • Frequency converter control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0062]Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided in order to give a thorough understanding of embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced without one or more of the specific details being omitted, or other methods, components, devices, steps, etc. may be adopted. In other instances, well-known technical solutions...

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 control method of a frequency converter. The control method comprises the following steps: S1, controlling the output frequency of the frequency converter to be a preset waiting frequency within a first preset time, and detecting the voltage of a direct-current end; S2, if the voltage of the direct-current end does not reach a first preset value or exceeds a second presetvalue, returning to the step S1 after waiting for a second preset time; S3, if the voltage of the direct-current end reaches the first preset value, controlling the output frequency to be a preset starting frequency within a third preset time; and S4, adjusting the increasing speed of the output frequency in real time according to the voltage of the direct-current end so that the output frequencyis increased to the preset working frequency of the motor. According to the frequency converter control method provided by the invention, the solar energy utilization efficiency can be improved, and the load of the frequency converter obtains the maximum output power.

Description

technical field [0001] The present disclosure relates to the technical field of electronic power, and in particular, to a method for controlling a frequency converter. Background technique [0002] Inverters for solar electric pumps obtain DC power from solar power modules and convert it into AC power in the inverter to drive electric pumps. In areas without power grids such as mountains, hills, and remote mountain villages, photovoltaic solar energy can be used to generate electricity and Drive loads, or fan water pump devices and electric pump equipment in remote and special areas for farmland irrigation or drinking water transfer, realize the full use of energy, promote the application of green energy, and have a good promotion for environmental protection and economic development effect. [0003] In related technologies, by detecting the DC input terminal voltage of the frequency converter, increasing the output frequency when the voltage is lower than the preset value,...

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 Applications(China)
IPC IPC(8): H02P27/06
CPCH02P27/06
Inventor 黄嘉楠吴小萍
Owner LS INDAL SYST WUXI