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首页> 外文期刊>Power Electronics, IET >Simple control scheme for single-phase uninterruptible power supply inverters with Kalman filter-based estimation of the output voltage
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Simple control scheme for single-phase uninterruptible power supply inverters with Kalman filter-based estimation of the output voltage

机译：单相不间断电源逆变器的简单控制方案，基于卡尔曼滤波器的输出电压估算

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摘要

The major drawback of most control methods for uninterruptible power supply (UPS) inverters is complexity. In this study, a simple voltage sensorless multi-loop control method is proposed for the single-phase UPS inverter and the parameters are designed systematically based on a frequency domain method. The suggested control scheme uses two nested simple proportional controllers instead of proportional–integral/resonant controllers to regulate the output voltage and produce active resonance damping. In addition, a feedforward compensation of the reference voltage is used to enhance the performance of the control system. The proposed controller does not need any reference frame transformation or integration/derivation of measured quantities in its structure. To reduce the cost and at the same time to improve the reliability of the converter system, the output voltage sensor is replaced by a simple estimation algorithm based on the digital Kalman filter. Experimental results with a 500 VA prototype, as well as simulation results validate the excellent performance of the suggested estimation and control scheme.
机译：用于不间断电源（UPS）逆变器的大多数控制方法的主要缺点是复杂性。本文提出了一种简单的单相UPS逆变器电压无传感器多环控制方法，并基于频域方法对系统参数进行了系统设计。建议的控制方案使用两个嵌套的简单比例控制器，而不是比例积分/谐振控制器来调节输出电压并产生有源谐振阻尼。另外，参考电压的前馈补偿用于增强控制系统的性能。所提出的控制器在其结构中不需要任何参考系变换或测量量的积分/推导。为了降低成本并同时提高转换器系统的可靠性，将输出电压传感器替换为基于数字卡尔曼滤波器的简单估算算法。 500 VA原型的实验结果以及仿真结果验证了建议的估算和控制方案的出色性能。

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