Power electronics & renewables
Rectifiers, inverters, PV, wind — the converters of the modern grid.
Lessons
Lesson 1
Rectifier waveforms — half-wave, full-wave, 3-φ 6-pulse, SCR control
V_dc equations, ripple factor, firing-angle control, and 6-pulse line-current harmonics (5th, 7th, 11th, 13th).
Lesson 2
Inverter PWM — sinusoidal PWM, modulation index, SVPWM
How comparing a sine with a triangle generates a clean AC sine at the output; m_a / m_f, over-modulation, and the 3-φ third-harmonic injection that boosts V_LL by 15 %.
Lesson 3
DC-DC converters — buck, boost, buck-boost
Three classical non-isolated topologies with their CCM transfer functions, CCM vs DCM operation, and L/C sizing for target ripple.
Lesson 4
Photovoltaic I-V curves and MPPT
PV cell I-V shape, MPP location, irradiance + temperature effects, and Perturb-and-Observe / Incremental-Conductance MPPT algorithms.
Lesson 5
Wind power curve and generator topologies
P = ½·ρ·A·v³·C_p, Betz limit, tip-speed ratio, pitch control, and Types 1–4 (SCIG → WRIG+R → DFIG → full-converter PMSG).