Methods of synthesis of energy-efficient structures for regulating semiconductor frequency converters

International Workshop "Advanced Technologies in Material Science, Mechanical and Automation Engineering – MIP: Engineering – 2019"

材料科学;机械制造;原子能学

Bukhanov, S.S.^1 ; Imanova, A.A.^1 ; Kornienko, M.N.^1 ; Zhuravleva, L.A.^1 ; Fediakov, V.V.^1

South Ural State University, 76, Lenin prospekt, Chelyabinsk

454080, Russia^1

关键词: Analytical studies;    Electromagnetic excitations;    Energy efficient;    Experimental methods;    Frequency characteristic;    Frequency response methods;    High-speed objects;    Methods of synthesis;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/537/6/062079/pdf
DOI  :  10.1088/1757-899X/537/6/062079

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

A mathematical model of the power part of the semiconductor converter was developed in this article. The analysis of processes in systems with synchronous electric drives. Experimental and analytical studies have shown that in electric drives with traditional synchronous motors with electromagnetic excitation it is necessary to take into account the influence of winding stray fluxes when setting up a control system. In electric drives with powers exceeding 1000 kW, the effect of leakage fluxes will increase significantly. Experimental methods have established that in multiphase electric drives, when the number of phases is greater than three, the influence of inductive scattering resistance can be neglected, and the mathematical model of the power section of a semiconductor converter is simplified. At the stages of adjustment, it is allowed to approximate the mathematical model of the system by sequential connection of aperiodic links of the first order, the time constants of which are specified during the study of frequency characteristics. The parameters of corrective relationships should also be refined by frequency response methods. Considered recommendations were successfully used in adjusting frequency converters for high-speed objects for LLC "RiK-Energo".