New Approach for Thyristors Switched Capacitors Design for Static VAR Compensator Systems

Performance Analysis of Thyristors Switched Capacitors used for Reactive Power Compensation of Induction Motor

“…The corresponding amount of susceptance B can be estimated from both of terminal voltage and reactive power. Consequently, the required susceptance presents the input of TSC lookup Figure 6: Block diagram of new topology of TSC control system steps from look up table activates the capacitors discharging process once before the implementation of the following step [13]. Figure 6 illustrates the proposed TSC control system for both implementation of any susceptance and the activation of the discharging process [14].…”

“…By using MATLAB/SIMULINK package, Simulation model of the whole system is established to demonstrate the TSC performance during the compensation of reactive power. ASTESJ ISSN: 2415-6698 Figure 1 illustrates the proposed TSC scheme which can produce 25 level of operation by providing 25 different equivalent capacitances [13]. In compared with binary TSC and for the same number of capacitors, the developed scheme produces more steps of operation where the binary TSC only produces 16 steps [14].…”

“…Table 1 demonstrates the several equivalent capacitances produced by the proposed TSC. The connected reactor L in the topology is important related to the reduction of current rate of change [15] and related to the restoring of the stored energy on capacitors back to the source [13].…”

Control Strategy of Thyristors Switched SVCs with High Power Quality

“…Consequently, it is very vital to adjust the SVC characteristics to be most near to the continuous characteristic of SVC with TCR. Optimization technique can determine the parameters of each of the new developed schemes to obtain the smoothest variation in the produced reactive power [3]. In this section, the optimization technique is applied for TSR and with the same way it can be applied for TSC [3].…”

“…The SVC fundamentally is made up of inductive reactive power source, such as thyristor-controlled reactor TCR or thyristors switched reactors TSR, and capacitive reactive power source, for instance fixed capacitor FC and thyristors switched capacitors TSC [1]. The advance of SVC has various research trends such as optimization of the device rating and the place of installation in the power network [2], improvement of power electronics structure in the schemes [3,4,5] and development of SVC control system structure and operation [6]. TSR is considered as a solution to eliminate high order harmonics which are commonly produced in SVC based on TCR scheme.…”