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为了提高一个稳态强磁场实验装置(SHMFF)电源系统中直流有源滤波器的滤波效果,将其纹波电流降低至万分之一,借鉴其他稳态强磁场实验装置中串联调整有源滤波器的优点,提出了一种新型的基于能量回馈和注入补偿的并联型线性调整有源滤波方案。对组成该有源滤波器的电源模块、功率器件模块及其控制系统进行详细分析可知,该有源滤波装置的容量显著降低,且大大提高了装置的效率。实验结果表明,该滤波器能够将纹波电流限制在允许的范围内,具有低功耗、高效率的优点。
In order to improve the filtering effect of the DC active filter in a SHMFF power system, the ripple current is reduced to one ten thousandth, and other active steady-state magnetic field experiment devices are used to adjust the active filter A new type of parallel linear adjustable active filter based on energy feedback and injection compensation is proposed. A detailed analysis of the power module, the power device module and the control system thereof composing the active filter shows that the capacity of the active filtering device is significantly reduced and the efficiency of the device is greatly improved. Experimental results show that the filter can limit the ripple current within the allowable range, with the advantages of low power consumption and high efficiency.