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功率前馈电压型PWM整流器直接功率解耦控制 被引量:19

Direct power decoupling control of three-phase boost type PWM rectifiers based on power feedforward
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摘要 针对有功功率和无功功率互为耦合问题,根据整流器在同步旋转dq坐标系中的数学模型推出功率控制数学模型,提出了电压型PWM整流器直接功率前馈解耦控制新策略,获得有功功率和无功功率独立控制效果。依据新的输入电压空间划分及合成空间矢量,确定了新的功率控制开关表。根据电源电压空间矢量位置和功率控制所需整流器输入电压空间矢量位置,在新的功率控制开关表选择开关函数,给出了系统的功率控制器和电压控制器的设计方法。计算机仿真结果表明,该策略具有可行性。 In view of the fact that active power and reactive power have coupling relation, the paper deduces the power control mathematical model of three-phase boost type PWM rectifiers based on the mathematical model of rectifier in synchronous dq coordinates and proposes a new direct power control (DPC) strategy of three phase boost type PWM rectifiers based on power feedforward decoupling, and the independent control of active power and reactive power are obtained. A new power control switching table is set up according to new dividing of input voltage space and resultant voltage space vectors. The switching functions are selected in new power control switching table according to the position of source voltage space vector and input voltage space vector of rectifier required. This paper gives the design method of power controller and voltage controller. Simulation results show that the control strategy is feasible.
出处 《辽宁工程技术大学学报(自然科学版)》 EI CAS 北大核心 2007年第2期238-241,共4页 Journal of Liaoning Technical University (Natural Science)
基金 北京市自然科学基金重点资助项目(KZ200710772015) 北京市属市管高等学校"拔尖创新人才计划"资助项目(2006)
关键词 PWM整流器 直接功率控制 功率前馈解耦 扇区 电压空间矢量 PWM rectifier direct powercontrol power feedforward decoupling sector voltage spacevector
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