Power Electronics & Control

Predictive control, multilevel converters, and grid stability

LCL Filter Design for Solar Inverters

Passive Filters | Power Quality | Magnetic Design

Structural schematic of the LCL Filter

Calculation and optimized design of LCL filters for 50kW photovoltaic grid-connection inverters. This image represents the structural schematic and serves as the technical basis for the design parameters (L1, L2, C). Priority was given to minimizing magnetic core losses and complying with harmonic injection regulations (IEEE 519).

Predictive Control (MFPC) for Grid-Forming Converters

Model Free Predictive Control (MFPC) | T-Type Inverters | Grid-Forming

MFPC Tracking Linear Load

Linear Load

MFPC Tracking Non-Linear Load

Non-Linear Load

Comparison of capacitor voltage tracking: Note the stability of the MFPC algorithm even under distortion from non-linear loads. Despite the noise in the measured signal (green/red in the upper part), reference tracking (lower part) is flawless, demonstrating control robustness under critical conditions.

  • Implementation in high-fidelity simulations (PLECS/Matlab).
  • Current tracking error reduction by 15% compared to classic PI controllers.
  • Robustness validation against load changes and grid faults.

Dispatchable Virtual Oscillator Control (dVoc) in Microgrids

Dispatchable Virtual Oscillator Control (dVoc) | Microgrids | Stability

dVoc transient response

Response to transients (critical event at t = 0.5s). The subplots show the simultaneous response of current, frequency, angle, error, and power.

Research on dispatchable virtual oscillator control for automatic synchronization of converters in isolated microgrids. This technique allows for active and reactive load sharing without fast communications, mimicking synchronous generator dynamics but with near-instantaneous response.

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