电力系统自动化2016，Vol.40Issue(22)：118-124,7.DOI:10.7500/AEPS20150823002
无锁相环三相DC/AC变流器直接功率预测控制
Predictive Direct Power Control of Three-phase DC/AC Converter Without Phase Locked Loop
摘要
Abstract
A predictive direct power control method without the phase locked loop (PLL) is presented,the research obj ect of which is the three-phase DC/AC converter.This method can achieve the deadbeat control of grid-connected power.In order to reduce the influence on the control performance by PLL,the method without PLL is realized.According to the two-beat delay resulting from the sampling control,the sampling frequency which is twice the carrier frequency is adopted to calculate the grid voltage,the grid-connected power and current after one cycle accurately.The output of the converter is calculated by the formula given in the paper.The deviation between the frequency set by the control system and the grid frequency has no influence on the performance of the control method proposed in this paper.The feasibility of the absence of phase locked loop (PLL) is demonstrated.The three-phase grid-connected converter simulation model and experimental prototype are built.The conversion from a control system simulation model into the C language program of DSP is realized by the Embedded Coder block of Simulink.The control method is validated and analyzed by simulation and experiment.关键词
三相DC/AC变流器/直接功率预测控制/锁相环/采样控制频率/仿真模型Key words
three-phase DC/AC converter/predictive direct power control/phase locked loop (PLL)/sampling and control frequency/simulation model引用本文复制引用
陈强,郝思鹏,章心因,吕干云..无锁相环三相DC/AC变流器直接功率预测控制[J].电力系统自动化,2016,40(22):118-124,7.基金项目
国家自然科学基金项目(51577086) （51577086）
江苏省产学研前瞻性联合研究项目(BY2015009-03)。 （BY2015009-03）
