An Optimized Superconducting Magnetic Energy Storage for Grid Connected Systems
Journal of New Materials for Electrochemical Systems(2024)
Abstract
As the power quality problems emerge, the cost of fossil fuels rises and, in this case, the system requires a high energy storage device, which is effective, reliable and durable. In this study, a Superconducting Magnetic Energy Storage (SMES) device is utilized, that stores large amount of electrical power in superconducting coil and the energy stored, which is in the form of a DC magnetic field. The output attained from the SMES is AC, which is converted into DC with the aid of a 1-CYRILLIC CAPITAL LETTER EF PWM rectifier. To boost the operation, an input inductance is connected at the AC side and to smooth the DC voltage, an output capacitance is connected at the DC side in the PWM rectifier circuit. The PI controller is utilized to regulate the PWM rectifier and the parameters such as proportional constant (Kp) and integral constant (Ki) are tuned with the utilization of particle swarm optimization (PSO) algorithm, which provides best optimal values. The attained value is then fed to the grid through 1-CYRILLIC CAPITAL LETTER EF VSI, and the gating pulses for VSI are produced by comparing actual value with reference value that converts the DC into AC voltage. Thus, the grid synchronization and the compensation of reactive power are achieved with the aid of PI controller.
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