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公开(公告)号：KR101875864B1
公开(公告)日：2018-08-02
申请号：KR1020170012514
申请日：2017-01-26
Applicant: 강원대학교산학협력단
Inventor： 김상훈
Abstract: 옵셋전압을이용한랜덤 PWM 발생장치는랜덤변수를발생시키는랜덤변수발생부; 상기랜덤변수발생부에서발생된랜덤변수를이용하여옵셋전압을설정하는옵셋전압설정부; 입력신호의전압지령과상기옵셋전압설정부에서설정된옵셋전압을합하여극 전압지령을출력하는극 전압지령출력부; 상기극 전압지령출력부에서출력된극 전압지령을바탕으로인버터구동펄스를발생시키는 PWM 발생부; 를포함할수 있다. 본발명에따른옵셋전압을이용한랜덤 PWM 발생장치및 방법을통해추가적인회로나복잡한계산없이간단하게구현할수 있다.
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公开(公告)号：KR101337174B1
公开(公告)日：2013-12-05
申请号：KR1020120096574
申请日：2012-08-31
Applicant: 강원대학교산학협력단
IPC: H02P6/18
CPC classification number: H02P6/18 , H02P25/03 , H02P2203/03
Abstract: The present invention relates to a sensor-less control method for an AC motor. According to the present invention, the sensor-less control method for an AC motor includes a step for injecting the square wave voltage of a switching frequency; a step for obtaining a synchronous reference frame current; a step for calculating the synchronous reference frame current; a step for changing a coordination system; a step for extracting a radio frequency component current; and a step for outputting an estimated velocity and an estimated location. [Reference numerals] (110) Current controller;(120) Envelope detector;(130) Status filter;(150) PWM inverter;(160) AC motor
Abstract translation: 本发明涉及一种用于交流电动机的无传感器控制方法。 根据本发明，用于交流电动机的无传感器控制方法包括：注入开关频率的方波电压的步骤; 获取同步参考帧电流的步骤; 计算同步参考帧电流的步骤; 改变协调制度的一个步骤; 提取射频分量电流的步骤; 以及用于输出估计速度和估计位置的步骤。 （110）电流控制器;（120）信封检测器;（130）状态滤波器;（150）PWM逆变器;（160）交流电动机
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公开(公告)号：KR101140392B1
公开(公告)日：2012-05-03
申请号：KR1020110016711
申请日：2011-02-24
Applicant: 강원대학교산학협력단
Inventor： 김상훈
IPC: G01R19/165 , H02M7/00
Abstract: PURPOSE: A device and a method for computing the input voltage of an inverter are provided to accurately measure the input voltage of an inverter. CONSTITUTION: A three-phase inverter device(100) comprises a power supply unit(110), a three-phase switching unit(120), an output load unit(130), and a controller(140). The power supply unit supplies DC power to the device. The switching unit is switched according to a predetermined control signal and outputs DC power into AC power. The output load unit consumes the outputted AC power. The controller recognizes the load voltage of the output load unit, measures load current, and produces the input voltage of the switching unit.
Abstract translation: 目的：提供一种用于计算逆变器输入电压的装置和方法，以精确测量逆变器的输入电压。 构成：三相逆变器装置（100）包括电源单元（110），三相切换单元（120），输出负载单元（130）和控制器（140）。 电源单元为设备提供直流电源。 根据预定的控制信号切换开关单元，并将DC电力输出为AC电力。 输出负载单元消耗输出的交流电源。 控制器识别输出负载单元的负载电压，测量负载电流，并产生开关单元的输入电压。
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