Optimization control method for dynamic performance of frequency converter

By constructing a device operating condition coupling analysis model and a speed and current fusion control architecture, the problems of dynamic performance degradation and high operation and maintenance costs of frequency converters under complex operating conditions are solved, achieving efficient dynamic response and long-term performance stability.

CN121813813APending Publication Date: 2026-04-07WOLU (SHANGHAI) TRANSMISSION SYST CO LTD
0 Cites 2 Cited by

Patent Information

Application Number
CN202511960115.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-12-24
Publication Date
2026-04-07

AI Technical Summary

Technical Problem

Existing frequency converter dynamic performance optimization schemes suffer from problems such as disconnect between device characteristics and operating parameters, insufficient coordination of multi-loop control, and lack of closed-loop optimization mechanisms, leading to dynamic performance degradation and increased operation and maintenance costs under complex operating conditions.

Method used

By constructing a device operating condition coupling analysis model, the inverter operation and device characteristic signals are acquired in real time. The mapping relationship between dynamic impedance parameters and switching transient characteristic quantities and operating condition parameters is established. A speed and current fusion control architecture is built to realize dynamic weight allocation and inter-loop information interaction, and the control parameters are optimized to adapt to device aging and operating condition changes.

Benefits of technology

This improves the dynamic response accuracy of frequency converters under complex operating conditions, reduces energy consumption, lowers maintenance costs, and ensures long-term performance stability and reliability.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention relates to a frequency converter dynamic performance optimization control method, and belongs to the technical field of power electronics. The method comprises the steps that frequency converter operation and device characteristic signals and external working condition correlation signals are collected in real time and integrated into a multi-dimensional operation data set, an analysis model is built, and a mapping relation is preset; extracting transient characteristics of a device switch, calculating a dynamic impedance parameter based on a mapping relation, and matching a parameter self-tuning rule base to generate a current loop proportionality coefficient, an integral time constant and a modulation wave duty ratio correction; a rotating speed and current double-loop fusion framework is built, the weight of an outer loop is dynamically adjusted according to rotating speed deviation and load sudden change, an inner loop adopts an adaptive reaching law and disturbance compensation, and a cooperative control instruction is generated through inter-loop interaction; monitoring instruction execution data to form feedback, correcting a model mapping relation and optimizing control parameters. The dynamic response precision of the frequency converter under complex working conditions is improved, the anti-disturbance capability is enhanced, and meanwhile, the device operation loss and the manual debugging cost are reduced.
Need to check novelty before this filing date? Find Prior Art