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首页> 外文期刊>IEEE Transactions on Industrial Electronics >Nonlinear PI-Control Approach for Improving the DC-Link Voltage Control Performance of a Power-Factor-Corrected System
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Nonlinear PI-Control Approach for Improving the DC-Link Voltage Control Performance of a Power-Factor-Corrected System

机译：改善功率因数校正系统直流环节电压控制性能的非线性PI控制方法

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摘要

When fast voltage control is used in a power factor control, the ripple of the dc link causes current harmonics. This paper proposes a method to reduce the harmonic content of a fast voltage loop in a power factor correction, which can both produce low distortion during steady-state operation and fast recovery from a load transient. The performance is achieved by using a Takagi-Sugeno-type nonlinear controller for dc-link voltage control. The proposed nonlinear control is compared with linear proportional-integral (PI) control, which is tuned to meet the standardized regulations for the harmonic content in a 3-kW single phase power supply. The results show that the presented nonlinear voltage controller can maintain the dynamic performance of the linear control with reduced current harmonics. It is also shown that the used nonlinear control method requires only marginally more complex control algorithm compared to commonly used linear PI control.
机译：在功率因数控制中使用快速电压控制时，直流环节的纹波会引起电流谐波。本文提出了一种在功率因数校正中减少快速电压环路谐波含量的方法，该方法既可以在稳态工作期间产生低失真，又可以从负载瞬态中快速恢复。通过使用Takagi-Sugeno型非线性控制器进行直流母线电压控制来实现性能。将拟议的非线性控制与线性比例积分（PI）控制进行比较，调整后的线性比例积分控制满足3 kW单相电源中谐波含量的标准化规定。结果表明，所提出的非线性电压控制器可以在降低电流谐波的情况下保持线性控制的动态性能。还表明，与常用的线性PI控制相比，所使用的非线性控制方法仅需要稍微复杂一些的控制算法。

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