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Inverter 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 driving efficiency and achieve the effect of improving application efficiency

Active Publication Date: 2021-07-20
LS INDAL SYST WUXI
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  • 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

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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...

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Abstract

The present disclosure provides a control method for a frequency converter, including: step S1, controlling the output frequency of the frequency converter to a preset waiting frequency within a first preset time, and detecting the DC terminal voltage; step S2, if the DC terminal The voltage does not reach the first preset value or exceeds the second preset value, and return to step S1 after waiting for the second preset time; step S3, if the DC terminal voltage reaches the first preset value, after the third preset Controlling the output frequency to a preset start-up frequency within a certain period of time; step S4, adjusting the boosting speed of the output frequency in real time according to the DC terminal voltage, so as to boost the output frequency to a preset operating frequency of the motor. The frequency converter control method provided in the present disclosure can improve the utilization efficiency of solar energy, so that the load of the frequency converter can obtain 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,...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P27/06
CPCH02P27/06
Inventor 黄嘉楠吴小萍
Owner LS INDAL SYST WUXI