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CONSULTING

At Poek Labs, we provide expert consulting in digital control and power electronics systems. Our main customers include startup companies and research institutions.

Our consulting services primarily help customers develop digital control algorithms for power conversion systems ranging from a few kilowatts to hundreds of kilowatts.

We serve our business clients by providing power electronics control consulting, electronic power control solutions, and custom algorithm designs on an as-needed basis.

OUR CONSULTING SERVICES INCLUDE


HOW WE WORK / CONSULTING ENGAGEMENT OPTIONS:
Necesitamos definir también cómo un cliente puede contratar los servicios. Por ejemplo, si ofrecen asesorías técnicas por videollamada, consultoría remota, visitas presenciales a la empresa, consultoría por proyecto o algún tipo de soporte continuo. También sería importante definir si quieren mostrar tarifas para alguno de estos servicios o si prefieren que todos se manejen mediante cotización.

MAIN TOPOLOGIES IN WHICH POEK LABS HAS EXTENSIVE EXPERTISE


Single-Phase Inverters (1φ VSI)
  • Classical H-bridge topology
  • Neutral-point clamping (3L-TNPC)
Split-Phase Inverters (Split-φ VSI)
  • Two legs of neutral-point clamping (3L-TNPC) with split capacitors
  • Three-leg VSI, with one leg per phase and one neutral leg
  • Three-leg VSI, with two half-bridges with split capacitors and one leg for balancing the voltages
Three-Phase Inverters (3φ VSI)
APF
Single-Phase and Three-Phase Active Power Filters (APF)
DC
DC-DC Non-Isolated Converters — Buck, Boost, Buck-Boost, etc. (DC-DC)
DAB
Dual-Active Bridge Converters (DAB)
CSI
Three-Phase Single Current-Source Inverters (CSI)
C
Three-Phase Dual-Series (Cascade) Current-Source Inverters (Cascade-CSI)
P
Three-Phase Dual-Parallel Current-Source Inverters (Parallel-CSI)
MMC
Single-Phase Modular Multilevel Converters (MMC)
Split-Phase Modular Multilevel Converters (Split-φ MMC)

DIFFERENT MODELLING TECHNIQUES


01
Switched-model development for control design
02
Circuit-averaged nonlinear models
03
Small-signal (linearized) models
04
State-space representation — sets of differential equations, typically used for MIMO systems
05
Transfer functions — typically from an output variable to an input duty cycle
06
Steady-state models for system-level decisions — script-based and computationally fast
07
Time-varying phasor models for complex systems such as parallel inverters

DIFFERENT TYPES OF CONTROLLERS DEVELOPED


PI
Proportional-Integral Controllers (PI)
  • Anti-windup for the integral terms
    • Clamping (conditional integration)
    • Back-calculation
  • Saturation protection
SOGI
Second-Order Generalized Integrators (SOGI)
PR
Proportional-Resonant Controllers (PR)
TOGI
Third-Order Generalized Integrators (TOGI)
LQR
Linear Quadratic Regulator Control (LQR)
PLL
Phase-Locked Loops
  • Classical and SOGI-based synchronous reference frame (SRF-PLL)
RST
RST Control
  • The most generalized pole-placement controller structure
AI
Anti-islanding Techniques
  • Based on signal injection
MPC
Model Predictive Control (MPC)
AD
Active Damping (AD)
  • Full-state feedback active damping
  • Capacitor current feedback
  • Capacitor voltage feedback (with an HPF) — most common
αβ
Clarke and Park Transformations
DR
Droop Controllers
  • Inductive droop
  • Resistive droop
SOC
SOC Battery Control Balancing
  • Over the droop control

DIFFERENT TYPES OF MODULATION STRATEGIES


Pulse-Width Modulation (PWM)
  • Classical for single-phase and three-phase inverters
  • Single-phase inverters
    • Bipolar
    • Unipolar continuous modulation
    • Unipolar discontinuous symmetric modulation
    • Unipolar discontinuous asymmetric modulation
Space Vector Modulation (SVM)
  • For three-phase inverters (VSI and CSI)
Phase-Shift Modulation (PSM)
  • For dual-active bridge (DAB) converters
  • Single-phase shift (SPS) modulation
  • Dual-phase shift (DPS) modulation
  • Triple-phase shift (TPS) modulation
Interleaving Modulation for MMC
Interleaving Modulation for DC-DC Converters

DEVELOPMENT

Custom control solutions built around your technical challenges.

Poek Labs works directly with your engineering team to design and implement digital control solutions tailored to your project requirements.

We support the full development process, from system modeling and simulation to rapid prototyping and hardware validation.

Our expertise covers:
  • Control algorithm development in C/C++, MATLAB, and Octave
  • DC/DC, grid-tied, and off-grid inverter optimization
  • Real-time control integration and hardware validation
  • Troubleshooting and tuning for improved system performance

ADVICE

Strategic technical guidance for better engineering decisions.

Our advisory consulting service is designed for teams that need expert direction on how to approach, structure, or improve a control system without requiring full development outsourcing. Through specialized meetings and technical reviews, we help clients move forward with clarity and confidence.

We assist clients in:
  • Evaluating control system architecture and design strategy
  • Defining technical approaches for implementation and optimization
  • Reviewing existing solutions and identifying improvement opportunities
  • Supporting critical engineering decisions throughout project development
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