一种适用于航空电源变换的新型混合整流电路功率控制

发布时间：2018-08-07 10:41

【摘要】：该文针对一种适用于航空电源变换的新型混合整流电路进行了研究,并提出了一种最优功率控制方法。该电路采用脉冲宽度调制(pulse width modulation,PWM)整流器和二极管整流器的并联结构,有效地抑制了网侧电流谐波,其中PWM整流部分能够承担部分比例可控的有功功率,使整流电路得到了更加充分的利用。提出了具有双电流闭环结构的新型功率控制方法,解决了混合整流电路中功率如何分配的问题,得到了最优分配点,使PWM整流部分承担的视在功率最小。同时研究了该电路中滤波电感和电流谐波的关系,提出的基于电流控制的功率因数补偿方法,保证了有滤波电感情况下电网侧的高功率因数。论文通过仿真验证了控制方法的正确性、不同滤波电感参数对电流谐波的影响,并通过实验验证了功率分配和能量回馈性能。
[Abstract]:In this paper, a new hybrid rectifier circuit suitable for aeronautical power conversion is studied, and an optimal power control method is proposed. The circuit adopts the parallel structure of pulse width modulation (pulse width) modulation-PWM) rectifier and diode rectifier, which effectively suppresses the current harmonics on the grid side, in which the PWM rectifier can take part of the proportional controllable active power. Make full use of rectifier circuit. A new power control method with double current closed-loop structure is proposed to solve the problem of how to allocate the power in the hybrid rectifier circuit. The optimal distribution point is obtained so that the apparent power of the PWM rectifier is minimized. At the same time, the relationship between the filter inductance and current harmonics in the circuit is studied, and the power factor compensation method based on current control is proposed to ensure the high power factor in the power grid side with the filter inductor. The correctness of the control method and the influence of different filter inductance parameters on current harmonics are verified by simulation in this paper. The power distribution and energy feedback performance are verified by experiments.
【作者单位】：北京航空航天大学电气工程系;
【分类号】：V242

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