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| 采用死区补偿和输出电流补偿的数控UPS逆变器 | |
| 引用本文： | 刘亚东,邢岩,黄立培,坂根诚.采用死区补偿和输出电流补偿的数控UPS逆变器[J].清华大学学报(自然科学版),2006,46(1):17-20. |
| 作者姓名： | 刘亚东 邢岩 黄立培 坂根诚 |
| 作者单位： | 1. 清华大学,电机工程与应用电子技术系,电力系统及大型发电设备安全控制和仿真国家重点实验室,北京,100084 2. 南京航天航空大学,自动化学院,南京,2100163 3. 杰士汤浅公司,日本国,大阪府,5691115 |
| 摘 要： | 为在不增加传感器的情况下,改善不间断电源(U PS)逆变器的输出动静态性能,提出了一种数字控制策略。该策略利用面积等效原理,将线性负载下的死区等效为方波扰动,利用前馈对其补偿;将输出电流视为对控制系统的扰动,并利用前馈补偿,通过对输出电压的微分运算获得输出滤波电容电流值,从而在不使用电流传感器的情况下,实现了对U PS逆变器的准双环控制。在1 kVA的样机上进行实验研究,其结果在额定阻性负载下的稳态总谐波畸变率(THD)为2.49%,空载与额定负载间阶越变化下的电压调整率为6.75%。结果表明:死区补偿和输出电流补偿有效,整个控制策略的可行。 |
| 关 键 词： | 不间断电源 数字控制 死区 多环控制 |
| 文章编号： | 1000-0054(2006)01-0017-04 |
| 修稿时间： | 2005年1月14日 |
Digitally controlled UPS inverter with dead time and output current compensation |
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| LIU Yadong,XING Yan,HUANG Lipei,Makoto SAKANE.Digitally controlled UPS inverter with dead time and output current compensation[J].Journal of Tsinghua University(Science and Technology),2006,46(1):17-20. | |
| Authors: | LIU Yadong XING Yan HUANG Lipei Makoto SAKANE |
| Abstract: | A digital control scheme was developed to improve the output performance of UPS(uninterruptable power supply) inverters without adding additional sensors.The scheme uses feed forward compensations for the dead time effect for a linear load which is equivalent to a voltage disturbance of the square wave based on the average-area method and for the output current regarded as disturbance.The output filter capacitor current comes from the differential to the output voltage to give quasi double loop control without current sensor.The total harmonics distortion(THD) for a 1 KVA prototype at rated resistor load is 2.49% with the voltage regulation for a step change from null load to rated load of 6.75%.The results show that the dead time compensation and output current compensation is quite effective. |
| Keywords: | uninterruptable power supply digital control dead time multi-loop control |
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