Analysis of PQ Disturbances in Renewable Grid Integration System Using Non-parametric Spectral Estimation Approach

Internet of Things-Based Control of Induction Machines: Specifics of Electric Drives and Wind Energy Conversion Systems

“…Power plants using renewables and IoT are considered as part of the emerging Internet of Renewable Energy Sources (IoRE), which includes networking, control, productivity, security, and sustainability [29], with lower emissions [30][31][32], optimization of economics with multiple criteria [33], depending on load demand [34], and with energy constraints [6]. However, because electricity produced from renewables is of variable quantity, power quality, and high cost, these important problems must be solved to meet electricity demand with optimized efficiency [34,35]. Despite the technological development so far, new RES schemes for continuous energy supply, of sufficient quantity, and at lower cost, are still being explored.…”

“…Power quality improves because DOIG connects and disconnects from the grid, without high transient currents during cut-in or cut-out. The instabilities of wind generate higher order harmonics [48,49], which impacts the generated power quality, especially in fast transient states of the wind, and also, in weak or isolated autonomous grids [35,48]. With the DOIG, the higher order harmonics are reduced due to the high switching frequency of the power converter in the rotor, and the levels of the 5th and 7th harmonics are lower [50,51].…”