公开(公告)号：KR100330662B1

公开(公告)日：2002-03-29

申请号：KR1019990062737

申请日：1999-12-27

Applicant: 학교법인 포항공과대학교

Inventor： 남광희 ,  허남호

IPC: H02M7/00

Abstract: 본발명은 PWM 컨버터-인버터시스템의수명에가장큰 영향을주는직류링크단대형전해커패시터를소용량필름커패시터로대체할수 있는 PWM 컨버터제어장치에관한것이다. 인버터와컨버터시스템의파우어동력학을유도하고인버터에대한파우어동력학을마스터시스템으로, 컨버터파우어동력학을슬레이브시스템으로정한다. 이경우, 마스터시스템동력학을슬레이브시스템이추종할수 있도록하기위한직류링크단전력평형화제어기와직류링크커패시터에너지를이용한전압제어기로구성되어있다. 특히, 에너지를이용한전압제어는전체시스템을선형화하는장점이있다. 또한, 제안된제어방식은속응성이우수하기때문에직류링크단전압맥동을최소화시킨다. 따라서, 가격, 크기, 신뢰성에있어문제점이많은기존전해커패시터를반영구적인소형, 소용량의필름커패시터로교체할수 있다. 결과적으로제안된방식을사용할경우, PWM 컨버터-인버터시스템의가격이내리고, 크기가감소해설치면적이줄고, 신뢰성이크게향상된다.

公开(公告)号：KR1020010060453A

公开(公告)日：2001-07-07

申请号：KR1019990062737

申请日：1999-12-27

Applicant: 학교법인 포항공과대학교

Inventor： 남광희 ,  허남호

IPC: H02M7/00

Abstract: PURPOSE: A converter and inverter system for modulating a pulse width is provided to improve the reliability of the converter and inverter system, and to decrease the price and the volume by applying a DC link electric power balanced method and an energy control method at a PWM converter-inverter system. CONSTITUTION: A converter and inverter system includes an encoder(110), a speed controller(112), a flux controller(113), a current controller(114), the first coordinate converter(115), and the first EPLD(Erasable Programmable Logic Device)(116). The encoder(110) detects a real speed of an AC motor(50) and a location of a rotator magnetic flux vector. The speed controller(112) builds up a q-axis current instruction value by comparing an external speed instruction value and the real speed of the AC motor(50). The flux controller(113) builds up a d-axis current instruction value by comparing an external magnetic flux instruction value with a flux calculated through a numerical formula. The current controller(114) builds up a voltage instruction value for a d-q axis current by using the location of the rotator magnetic flux vector, the q-axis current instruction value, and the d-axis current instruction value. The first coordinate converter(115) converts a coordinate of the voltage instruction value by using the location of the rotator magnetic flux vector. The first EPLD(116) generates a PWM signal needed in an inverter(40) through a fixing coordinate system voltage instruction value converted by the first coordinate converter(115).

Abstract translation: 目的：提供用于调制脉冲宽度的转换器和逆变器系统，以提高转换器和逆变器系统的可靠性，并通过在PWM上应用直流链路电力平衡方法和能量控制方法来降低价格和体积 变频器逆变系统。 构成：转换器和逆变器系统包括编码器（110），速度控制器（112），磁通控制器（113），电流控制器（114），第一坐标转换器（115）和第一EPLD（可擦除可编程 逻辑器件）（116）。 编码器（110）检测交流电动机（50）的实际速度和转子磁通矢量的位置。 速度控制器（112）通过比较外部速度指令值和AC电动机（50）的实际速度来建立q轴电流指令值。 磁通量控制器（113）通过将外部磁通指令值与通过数值公式计算的通量进行比较来建立d轴电流指令值。 电流控制器（114）通过使用旋转器磁通矢量，q轴电流指令值和d轴电流指令值的位置，建立d-q轴电流的电压指令值。 第一坐标转换器（115）通过使用旋转体磁通矢量的位置来转换电压指令值的坐标。 第一EPLD（116）通过由第一坐标转换器（115）转换的固定坐标系电压指令值产生逆变器（40）中所需的PWM信号。