【摘要】 在三相功率因数校正中提出了预测电流数字控制器,它可以简捷地实现电流内环,相应地减少TMS320F240程序所占用的资源。结合预分解矩阵算法,使得整个控制程序只用一个定时器下溢中断资源就完成了所有算法,从而得以实现较高的开关频率。采用的预测电流数字控制器实现了输入电流的闭环控制,三相输入电流能跟踪输入电压相位,三相电压型PWM整流器实现了高功率因数。PWM整流器的电压环采用PI调节器,获得了恒定的输出电压。实验结果验证了分析设计的可行性和有效性。更多还原

【Abstract】 Predictive digital current control is proposed in three-phase PWM rectifier application.Design of the current-control loop is simplified and less memory and interrupt resource in DSP TMS320F240 needed.Associated with the Pre-decomposition-Matrix method,the total control algorithm can be implemented with only one timing underflow interruption service.Based on this,higher switching frequency is wined.The predictive current control helps greatly to voltage regulation with the input current keeping in phase with input voltage.And high power factor is achieved as a result.Experimental results are given to verify the proposed analysis and design at the end of the paper.更多还原