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Gene regulation studies reveal unknown biological functions in disease progression. As more time-course datasets become available, interactions among the regulators and their associated target genes may better describe the evolution of gene regulatory networks. Currently in many research studies, interaction delay is not considered. Such delay is embedded in the network due to the intrinsic temporal...
The reason why the neutral point voltage fluctuates is analyzed in detail and a current-sensorless hysteresis control strategy proposed. This way to balance the neutral-point voltage is simple and not need of current sensor. Based on small signal control model and neutral-point voltage balanced technique the experimental prototype are given and the experimental results verify that the proposed mathematic...
The control strategy for three-phase-high-power-factor PWM rectifier is studied, and the methodology of building the small signal model of the main power circuit is proposed in this paper. High frequency model for the rectifier mentioned and the input-to-output transfer function for the system are deduced with analysis. Design principle and method of the voltage regulator are given based on the model...
A three-phase PWM bidirectional converter system based on line voltage oriented vector control is researched. A novel on line voltage oriented vector control without line voltage sensing is proposed. The system is operated with unit power factor in the side of AC line no matter in rectifier mode or active inverter mode. The alpha and beta components of line voltage were estimated by the line current,...
A predictive current control for three-phase PWM rectifiers is proposed to simplify the design of the current loop with less memory and interrupt resource occupation in a digital signal processor. Together with the decomposition-matrix method, the total algorithm can be completed with only one timer and its underflow interrupt subroutine. The predictive current controller helps to design the voltage...
A predictive current controller applied in a three-phase PWM rectifier is proposed. It can simplify the design of the current control loop and occupies less memory and interrupt resource in the DSP (digital signal processor). Together with the decomposition-matrix method, the total algorithm can be completed only with one timer and its underflow interrupt subroutine. The predictive current controller...
Numerical simulation methodology based on high frequency mathematical model of high power factor PWM rectifier is proposed in this paper. And input to output transform function is deduced. With the help of input to output transform function, the design method of voltage regulator has been presented. The simulation for three-phase PWM rectifier is implemented with Runge-Kutta, thus comprehensive simulation...
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