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Many devices need DC source with low ripple for normal operation. Three-phase bridge rectifiers are most commonly used as the base unit in the source. A simulation model built in MATLAB/SIMULINK is used to analyze the operating of DC source under unbalance mains. The simulation results characterize quality of output voltage versus unbalance of phase voltage.
The traction converter system of EMU is constructed based on Matlab/Simulink. The system consists of a transformer, a rectifier, an inverter and an induction motor. The rectifier is controlled by the transient current control theory with SPWM technology. In the inverter the indirect vector control theory with current hysteretic band PWM strategy is adopted. Based on the system the traction control...
The fundamental theory and control methods of Active Power Factor Correction (short for APFC) are introduced in this paper. It analyzes and studies the APFC based on the average current control single-phase Boost type APFC circuit. In addition, the simulation model is built on the MATLAB and the results are shown in this paper. The results show the average current control single-phase Boost type APFC...
The LC filter introduced to the AC side of three-phase current source PWM rectifier, brought leading power factor. In addition, because of the nonlinearity of the PWM rectifier, the satisfactory effect could not be obtained with the traditional PID control system under larger disturbance and changes of controlled object. This paper described the technology of Combining traditional PID control with...
Three-phase high-power rectifier has widely applied to electromotor and high-power AC-DC transformation, but there are many problems such as many harmonic waves and low power factor about high-power rectifier. Along with much request of green electrical source, it is more and more important to reduce its disturbance to electrical network. High-frequency PWM rectifier can adjust output voltage and...
Taking the three-phase uncontrolled diode-bridge rectifier of a certain style armored vehicle's power supple system as research object, a practical method to calculate the harmonic amplitudes of rectifier's DC-side output current is theoretically analyzed with the detailed calculation formulas are given. Based on MATLAB, the rectifier's circuit model is constructed. The comparison of simulation and...
The paper presents a nonlinear control strategy for single-phase active power filter applying exact feedback linearization theory, since this technique has been successfully applied to other area of power electronic. Using the state-space average modeling method, a nonlinear affine mode of single-phase shunt active power filter is set up. It is testified that the model is satisfied with the condition...
In this paper, we present a case study of formal verification of analog and mixed signal designs using SPICE circuit simulation traces. We consider verifying safety properties of Full Wave Rectifier (FWR) using SPICE circuit simulation traces. We follow the formal verification approach of where authors have used the SPICE circuit simulation traces for doing the formal analysis of the Analog and Mixed...
We present a case study of formal verification of full-wave rectifier for analog and mixed signal designs. We have used the Checkmate tool from CMU [1], which is a public domain formal verification tool for hybrid systems. Due to the restriction imposed by Checkmate it necessitates to make the changes in the Checkmate implementation to implement the complex and non-linear system. Full-wave rectifier...
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