三相PWM整流器模型預(yù)測的直接功率控制研究
作者:王吉校1, 張瑞偉2 上傳時間:2015/9/2 15:35:28
摘要:三相PWM整流器在新能源發(fā)電并網(wǎng)、電機(jī)變頻控制等領(lǐng)域得到了廣泛的應(yīng)用。本文研究了三相PWM整流器基于模型預(yù)測的直接功率控制算法(MPC-DPC)。MPC-DPC在每個采樣周期內(nèi),通過電網(wǎng)電壓矢量選擇有效作用矢量,為實現(xiàn)定頻控制和減小開關(guān)損耗,結(jié)合零矢量采用3+3的矢量序列,并以減小有功功率和無功功率偏差為目標(biāo),計算出每個矢量的最優(yōu)作用時間。對MPC-DPC算法進(jìn)行了仿真研究,結(jié)果表明,MPC-DPC具有良好的動靜態(tài)性能。
敘詞:PWM整流器/模型預(yù)測控制/直接功率控制/有功功率/無功功率
Abstract: Three-phase PWM rectifier is widely used in the fields of new energy paralleling operation and motor control technology. This paper mainly studies the direct power control algorithm of three-phase PWM rectifier based on model predictive control (MPC-DPC). During every sampling period, effective interaction vector is selected through the voltage vector and vector sequence of 3+3 is used to realize constant frequency control and to reduce switching loss combined with zero vector, and thus MPC-DPC figures out the best acting time of every vector, aiming to reduce the deviation of active power and reactive power. The result shows MPC-DPC has excellent dynamic and static performance with the simulation study of MPC-DPC.
Keyword:PWM rectifier, Model predictive control, Direct power control, Active power, Reactive power
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--本文摘自《電源世界》,已被閱讀33150次
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