论文标题

对电动电子逆变器的扰动感知预测控制的后退视野优化

Receding Horizon Optimization for Disturbance-aware Predictive Control of Power Electronic Inverters

论文作者

Chen, Zhengxi, Shen, Xun

论文摘要

通过退化的地平线优化方法,提出了针对DC-AC逆变器的不良预测控制政策。首先,已经为非线性逆变器系统动力学构建了离散事件驱动的混合动力自动机模型。制定了无限离散状态空间过渡序列优化的控制问题。采用退化的视野优化方法来解决离散优化问题在线的离散优化问题。因此,提出了扰动感知的自适应控制,外部干扰由在线递归最小二平方(RLS)算法进行采样和估算。然后详细说明,常规的PWM控制解决方案是拟议的控制策略的解决方案的子集,并提供了它们之间的代码传输。通过在提出的控制策略中添加额外的PWM约束,将引入最佳PWM控制模式(OPCM)。提出的控制器可以在原始的最佳离散控制模式(ODCM)和OPCM下自由运行。数值仿真结果已经证实,所提出的离散控制策略已经实现了针对负载偏移的DC-AC反转的自适应控制,而ODCM比OPCM具有更好的控制性能。此外,提出的建模和控制框架有可能支持其他形式的控制模式。

A disturbance-aware predictive control policy is proposed for DC-AC power inverters with the receding horizon optimization approach. First, a discrete event-driven hybrid automaton model has been constructed for the nonlinear inverter system dynamics. A control problem of infinite discrete state-space transition sequence optimization is formulated. A receding horizon optimization approach is applied to solve the discrete optimization problem piece-wisely on-line. Accordingly, disturbance-aware adaptive control is proposed, the external disturbance is sampled and estimated by an on-line Recursive Least Square (RLS) algorithm. Then it is elaborated that the conventional PWM control solution is a subset of solutions of the proposed control strategy and the code-transition between them is provided. By adding extra PWM constraints to the proposed control strategy, an Optimal PWM Control Mode (OPCM) is introduced as an example. The proposed controller can freely operate under the original Optimal Discrete Control Mode (ODCM) and the OPCM. The numerical simulation results have verified that the proposed discrete control strategy has realized disturbance-aware adaptive control of DC-AC inversion against load-shift, and ODCM has better control performance than OPCM. In addition, the proposed modeling and control frame has the potential to support other forms of control modes.

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