欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
重复控制系统中补偿器的补偿精度与整体系统的动静态性能有直接关系，而补偿器的设计又完全依赖于控制对象的数学模型。为了提高补偿器的补偿精度，根据波形库控制技术提出基于控制对象单位阶跃响应波形的建模方法。由于典型响应曲线能够体现开关延时、测量延时、死区时间、非线性磁单元、杂散参数等因素对系统的影响，因此这种模型精度较高。在两相静止坐标系下对三相逆变器突加阶跃调制信号，采集在相同坐标系下的逆变器输出电压阶跃响应波形，基于此波形构建控制对象模型。相比于平均信号模型，应用该模型可以提高补偿器的截止频率和补偿精度，最终使整体系统的稳态性能得到改善。此方案在一台采用TMS320LF2407A型号数字信号处理器控制的三相逆变器上得到了验证。
英文摘要：
The precision of compensator which is an important part of the repetitive control system has direct influence on the system performance. The design of compensator totally depends on the mathematical model of the control target. This paper proposed a modeling method using inverter step response waveform data to improve the precision of compensator based on waveform library control technique. As influences of the inverter switch delaying time, measurement delaying time, dead-time, non-linear magnetism unit, spurious parameters, etc., can be shown in its typical response waveform, the model based on sampling data has high precision. For the three phase inverter, by sampling the step response of inverter＇s output voltage, the control target＇s model was built in two phase static frame. With this kind of model, the compensator＇ cut-off frequency and the precision of compensator could be raised compared to the average model, so the performance of repetitive control system was improved. This scheme was proved on a three-phase inverter controlled by TMS320LF2407A digital signal processor.
同期刊论文项目
同项目期刊论文
Small-signal modelling and analysis of wind turbine with direct drive permanent magnet synchronous g
Pulse width modulation AC/DC converters with line current harmonics minimisation and high power fact
Zero-Voltage-Switching PWM Full-Bridge Converter Employing Auxiliary Transformer to Reset the Clampi
Symmetrical short circuit current characteristics of doubly fed induction generator wind turbine wit
Full Feedforward of Grid Voltage for Discrete State Feedback Controlled Grid-Connected Inverter With
Multiple-Complex Coefficient-Filter-Based Phase-Locked Loop and Synchronization Technique for Three-
Improved current regulation of three-phase grid-connected voltage-source inverters for distributed g
Flexible Control of Three-Phase Distributed Generation Systems for Voltage Rise Mitigation in Microg
期刊信息
位置：