【摘要】 介绍了低压供电系统中一种新型低电压应力的中性线谐波治理装置,研究了该装置的主电路结构并对其工作原理进行了分析,同时对装置的谐波电流检测方法、控制策略等问题进行了研究,给出了该有源电力滤波器(APF)的主电路结构图,提出了基于自适应干扰对消原理的谐波电流自适应检测方法,补偿策略主要采用重复学习Boost控制方法。在实际工程中采用DSP+FPGA为控制核心。试验结果表明,该装置具有电压应力低、结构和控制简单、运行可靠等优点。更多还原

【Abstract】 This paper introduces a novel low-voltage equipment to cancel the neutral harmonic current,researchs the main circuit of this equipment,and analyzes the equipment working theory,then studies the method to detect the harmonic current and gives the control scheme.The Active Power Filter(APF) main circuit is given.The adaptive method based on adaptive disturbance elimination principle is proposed.The method for compensation control is done by integrated learning Boost mode which is full described.Considering practical project the main control CPU is DSP and FPGA.The experimental result shows this equipment have higher stability,simple main circuit and control method,and higher reliability.更多还原