This paper develops an effective control framework for DC voltage control and power-sharing of multi-terminal DC (MTDC) grids based on an optimal power flow (OPF) procedure and the voltage-droop control. In the proposed approach, an OPF algorithm is executed at the secondary level to find optimal reference of DC voltages and active powers of all voltage-regulating converters. Then, the voltage ...

With increasing of microprocessors and DSP (digital signal processors) use as digital control systems in new, multiresonant power semiconductor converters, the new approaches for modeling and simulation of converters must be implemented. Designing the control system requires use of control to output transfer function for mathematical model of converter. For new, frequency controlled resonant co...

Distributed power systems are prevalent in telecommunications, networking, and high-end server applications and generally utilize a 48 V bus voltage adopted from the telecom industry. From the 48 V bus, a number of isolated point of load (POL) converters power the end loads, with isolation being required for safety. The traditional distributed power architecture (DPA), shown in figure 1(a), use...

in this paper, the static var compensator (svc) has been used to improve dynamic behaviour of power system. to do this, a new objective function is formulated considering power loss reduction, voltage profile improvement and loadability margin decrease. other contribution of this research is proposing a novel structure for particle swarm optimization (pso) algorithm through modifying the initia...

1151 B. D. 0. Anderson and E. I. Jury, ‘Stab&y ok multidimensional digital filters,” ZEEE Trans. Circuit and Syst., vol. CAS-21, pp. 30%304, 1974. R. V. Churchill, Complex Varkzbles &i Applications. New York: McGraw-Hill, 1960. E. I. Jurv. Theont and Application of the r-Transform Method. New Yorkf Wiley; 1964. -N. K. Bose and A. R. Modarressi, “General procedure for multivariable polynomial po...

this paper presents a novel control method to improve the efficiency of low-voltage dc-dc converters at light loads. pulse width modulation (pwm) converters have poor efficiencies at light loads, while pulse frequency modulation (pfm) control is more efficient for the same cases. switching losses constitute a major portion of the total power loss at light loads. to decrease the switching losses...

The occurrence of low-frequency electromechanical oscillations is a major problem in the effective operation power systems. scrutiny these provides substantial information about system stability and security. In this paper, new method introduced based on combination synchrosqueezed wavelet transform stochastic subspace identification (SSI) algorithm to investigate large-scale Then, estimated mo...