| LCL滤波并网逆变器的多速率采样数字控制 |
| |
| 引用本文： | 谢俊虎,赵莉华. LCL滤波并网逆变器的多速率采样数字控制[J]. 电力系统及其自动化学报, 2011, 23(6): 81-86 |
| |
| 作者姓名： | 谢俊虎 赵莉华 |
| |
| 作者单位： | 四川大学电气信息学院电气工程系,成都,610065 |
| |
| 摘 要： | 针对在带LCL滤波器的并网逆变器控制设计中所用传感器多和开关频率高等问题,提出了一种基于多速率输出采样MROS(multi-rate output sampling)和无差拍控制的数字控制方法,并用状态预测算法得到滤波器状态值,再用带积分环节的无差拍控制和最优控制技术计算控制输入.此方法所用的预测算法能准确预测出滤波器...
|
| 关 键 词： | LCL滤波器 并网逆变器 多速率输出采样 数字控制 无差拍控制 |
Digital Control of Grid-connected Inverter with LCL-filter Using Multi-rate Sampling Technique |
| |
| XIE Jun-hu,ZHAO Li-hua. Digital Control of Grid-connected Inverter with LCL-filter Using Multi-rate Sampling Technique[J]. Proceedings of the CSU-EPSA, 2011, 23(6): 81-86 |
| |
| Authors: | XIE Jun-hu ZHAO Li-hua |
| |
| Affiliation: | (Department of Electrical Engineering,School of Electrical Engineering and Information, Sichuan University,Chengdu 610065,China) |
| |
| Abstract: | A digital control method is proposed on the basis of multi-rate output sampling(MROS) and deadbeat control technique to solve the shortcoming of multi-sensor and high switching frequency in the control design of grid-connected inverter with LCL-filter.Firstly,the discrete mathematic model and state predictive algorithm of grid-connected inverter with LCL-filter is deduced using MROS,and then state values of LCL-filter is predicted by state predictive algorithm,and finally the control input is computed by using deadbeat control with integral and optimal control.The state predictive algorithm can provide an output sampling interval control algorithm for the actual project implementation and accurately predict state values of LCL-filter,and reduce the number of sensors.Simulation results show that the system has good control performance and lower switching frequency. |
| |
| Keywords: | LCL-filter grid-connected inverter multi-rate output sampling digital control deadbeat control |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
