Set up the circuit design criterion for the steady - stage deadbeat control to the line current of a three - phase high-power-factor rectifier based on voltage space-vector PWM.

建立了对基于电压空间矢量pwm的三相高功率因数整流器实现电流稳态无差拍控制的设计准则。

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The difference of output voltage of inverter and 220v is set as control signal, controller change the PWM signal to regulate buck-boost converter and three-phase rectifier.

以逆变器输出的电压和220v的差值作为控制信号。设计控制器根据控制信号改变直流变换器和三相可控整流的PWM控制信号。

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The Level Set method is adopted to capture the gas-liquid interface and the projection method is used to solve the three dimensional two-phase flow equations.

采用水平集方法捕捉气，液两相界面，结合投影方法，对所建立的两相流动模型进行了三维数值求解。

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To make matters worse, the three-phase benefit--each with its own set of rules--creates powerful incentives for old people, with the connivance or even the active participation of doctors and druggists, to pad their pill expenses.

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