基于改进型RISE-MC-LADRC的逆变器电压控制

Inverter Voltage Control Based on Improved RISE-MC-LADRC

针对模型补偿线性自抗扰控制下的逆变器抗扰能力不足的问题,提出一种基于改进型误差符号鲁棒积分的模型补偿线性自抗扰控制策略。首先,引入抗扰能力更强的误差符号鲁棒积分替代传统的线性状态误差反馈律,实现对强扰动的有效抑制。然后,对传统的线性扩张状态观测器进行改进,将各状态变量与其估计值之间的误差作为各估计值导数的调节依据,并通过比例微分环节对其进行校正,从而提高线性扩张状态观测器的观测精度。最后,通过Lyapunov理论证明了改进后控制器的稳定性。仿真结果验证了所提策略的有效性和优越性。

Aimed at the problem of insufficient anti-disturbance capability of inverters under the model compensated lin-ear active disturbance rejection control(MC-LADRC),an improved robust integral of the sign of the error(RISE)-MC-LADRC control strategy is proposed.First,an RISE with a stronger anti-disturbance capability is introduced to replace the traditional linear state error feedback(LSEF)to achieve an effective suppression of strong disturbance.Then,the traditional linear extended state observer(LESO)is improved,the error between each state variable and its estimated value is used as an adjustment basis for the derivative of each estimated value,and it is corrected through the propor-tional derivative link,thereby improving the observation accuracy of LESO.Finally,the stability of the controller is proved by the Lyapunov theory,and simulation results verify the effectiveness and superiority of the proposed strategy.