Robust and Fast Voltage-Source-Converter (VSC) Control for Naval Shipboard Microgrids

Abstract

This paper proposes a new modified model predictive control to compensate for voltage and frequency deviations with higher bandwidth for an AC shipboard microgrid. The shipboard power system (SPS) and islanded microgrids (MGs) have a reasonable analogy regarding supplying loads with local generations. However, a great number of vital imposing pulse loads and highly dynamic large propulsion loads in the SPS make the frequency and voltage regulation a complicated issue. Conventional linear control methods suffer from high sensitivity to parameter variations and slow transient response, which make big oscillations in the frequency and voltage of the SPS. This paper addresses the problem by proposing a novel finite control set model predictive control to compensate for primary frequency and voltage deviations with higher bandwidth and order of magnitude faster than state of the art. Furthermore, a single input interval type-2 fuzzy logic controller (SI-IT2-FLC) is applied in secondary level to damp the steady-state deviations with higher bandwidth. Finally, hardware-in-the-loop (HiL) experimental results prove the applicability of the proposed control structure.

Optimal Design and Model Predictive Control of Standalone HRES: A Real Case Study for Residential Demand Side Management

“…Application of MPC is found in current literature including FCS-MPC in [14] for primary control of voltage and frequency with large available bandwidth in off-grid systems, while FLC is applied as a secondary control to handle steady-state errors. Due to high cost, active power filter (APF) for unbalance and harmonics compensation, continuous control set MPC (CCS-MPC) with parameter tuning as the main focus is proposed in [15] and trade-off among voltage quality and injected current, stable operation and quick response is analyzed.…”

Optimal Non-Integer Sliding Mode Control for Frequency Regulation in Stand-Alone Modern Power Grids

“…Due to the external and boundary contiguity along with the series resistance, losing power is inevitable in PVs. Naturally, the PVs have an intermittent characteristic, and their generated power depends on several factors, such as the radiation intensity, the surface area of the cell, and the ambient temperature [11]. A random power source can be utilized to model the stochastic behavior of PVs in simulations.…”

“…A microgrid is regarded as a regulated entity in the power plant and consists of various DGs such as microsources, energy reserve devices, and loads which are locally integrated into the grid for the profit of the customers. Normally, microgrids (MGs) can work in the stand-alone mode as independent islands or grid-connected modes in conjunction with the main electrical grid [9][10][11]. In the grid-connected mode, the main utility generators are responsible for power balance management in connection with new demands.…”

Applications of Power Electronics

“…The main aim of this Special Issue was to seek high-quality submissions that highlight and address recent breakthroughs over the whole range of emerging applications of power electronics, the harmonic and electromagnetic interference (EMI) issues of the devices and system levels, as also discussed in [1][2][3][4], robust and reliable power electronics technologies, including fault prognosis and diagnosis techniques [5][6][7], the stability of grid-connected converters [8,9], and the smart control of power electronics for devices, microgrids and at system levels [10][11][12][13].…”