CAJ | 학술논문

由于现有的可调电抗电感不能快速连续调节或是谐波比较严重等问题,提出了一种新的可调电抗原理：使用电压型PWM逆变器作为变压器二次侧的负载,通过对负载电流的控制,可以实现变压器一次侧等效阻抗的任意调节;采用变压器二次侧多绕组的结构,可提高可调电抗器的容量。本文采用双端口网络控制,使多绕组多模块控制系统简单稳定。通过求解多绕组变压器的支路电流方程和变压器电感矩阵,得到多绕组变压器的数学模型,并在Matlab中建立多绕组变压器型可调电抗的仿真模型。仿真与实验表明基于双端口网络控制的多绕组变压器型可调电抗具备控制简单,电感线性连续可调、响应速度快、谐波电流小的优良性能。
유우현유적가조전항전감불능쾌속련속조절혹시해파비교엄중등문제,제출료일충신적가조전항원리：사용전압형PWM역변기작위변압기이차측적부재,통과대부재전류적공제,가이실현변압기일차측등효조항적임의조절;채용변압기이차측다요조적결구,가제고가조전항기적용량。본문채용쌍단구망락공제,사다요조다모괴공제계통간단은정。통과구해다요조변압기적지로전류방정화변압기전감구진,득도다요조변압기적수학모형,병재Matlab중건립다요조변압기형가조전항적방진모형。방진여실험표명기우쌍단구망락공제적다요조변압기형가조전항구비공제간단,전감선성련속가조、향응속도쾌、해파전류소적우량성능。
The existing structures of adjustable reactor can not be regulated rapidly and continuously or generate serious harmonics.A novel adjustable reactor structure is proposed in this paper.Using voltage source PWM inverter as the secondary load of linear transformer,the equivalent impedance of transformer’s primary winding can be regulated arbitrarily by controlling the inverter’s output current.Large capacity variable reactor can be realized by adopting the structure of transformer with multiple secondary windings.The control system of multi-winding and multi-module is simple and stable based on the double port network.The polygon type equivalent circuit model of multi-winding transformer is presented by solving the branch-current equation and the inductance matrix of the multi-winding transformer.The mathematical model of adjustable reactance implemented by multi-winding transformer is established in Matlab.The simulation and experimental results are given to verify the simple control,continuous-tuning,fast response and few harmonics of the novel adjustable reactance.