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This paper considers a group of mobile agents moving in Euclidean space with switched network topology. We propose a feedback control algorithm that achieves velocity consensus with weighted directed switched velocity graph and stabilize all position neighboring agents inter-distance to a same desired value. The main results are that the position and velocity graph remaining connected are satisfied...
This paper describes a digital proportional-integral-derivative (PID) controller technique applied to the DC-DC buck converter. The converter is modelled using a state space averaging technique. Due to the non-linear of the power converter, the PID controller is designed to simplify the compensation of the DC-DC converter. The control algorithm is implemented in digital signal processor (DSP) TMS320F2812...
Five-level inverter has been applied to industry and railway traction to solve the difficulty in applying low-voltage or medium-voltage switch devices to high-voltage system. The basic principle of diode-clamped five-level inverter is analysed in this paper. Based on the analysis of diode-clamped three-level inverter, single pulse control method, pulse width modulation(PWM) control methods and a novel...
Based on the space vector pulse width modulation (SVPWM) principle, the detailed SVPWM algorithm is derived in this paper and some improvements have been made taking over modulation and sector transition into consideration. Then the improved algorithm is simulated under MATLAB/SIMULINK. Multiple modulating methods-continuous and discontinuous are achieved in the simulation by changing some particular...
In this paper, the high frequency mathematical model based on controlled objects of tri-phase tri-wire diode-clamped tri-level rectifier in tri-dimensional alphabetagamma coordinates has been presented. This mathematical model shows that switch function Sgamma has only effect on the voltage difference of up and down capacitor in DC side and has no effect on line current in AC side and DC output voltage...
Four-switch three-phase inverter (FSTPI) is usually adopted as the topology for continuous fault-tolerant operation of a direct torque (DTC) system when inverter fault occurs. Due to that the FSTPI can only provide four voltage space vectors with unequal amplitude, the DTC system performance will deteriorate to a certain extent. To enhance the performance of permanent magnet synchronous motor (PMSM)...
A novel method (AC-DC-AC)to produce symmetrical four-phase voltage is presented in this paper, The main circuit is the four-bridge topology and the control method is the three-dimensional voltage space vector control. This method has the merits of novel design, high conversion efficiency, good waveform quality and the method is easily to be realized.The power circuit topology of realizing four- phase...
In this paper, the matrix converters are applied to the Direct Torque Control system of induction motor, the Direct Torque Control method of induction motor is proposed on the base of matrix converters, Some numerical simulations are carried out on the Direct Torque Control system of induction motor fed by Matrix converter. The results showed that the system has good steady state, dynamic performance,...
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