Kristian Skorpen
Power electronics · control theory

Power electronics and inverter control

Hi, I'm Kristian Skorpen, a hardware engineer specializing in power electronics and control theory. I work full-time in Pixii, which designs grid-connected battery systems (BESS).

Browse courses Try the tools
Single-phase full-bridge inverter schematic

Courses

All courses →
Grid-Connected Bidirectional Single-Phase Inverter
Paid course

Grid-Connected Bidirectional Single-Phase Inverter

Explanation and comparison of control methods for a grid-connected bidirectional single-phase inverter - current control, power control, Python examples.

39 EUR — 14-day money-back guarantee
The Boost Converter

The Boost Converter

How a step-up converter works, and how you control it - a plain-language follow-up to the buck guide. Built from the same parts as a buck, with the input and output swapped.

Free
The Buck Converter (Free Course)

The Buck Converter

How a step-down converter works, and how you control it - a plain-language guide with a companion web simulator. From chopping and averaging, to sizing the inductor and capacitor, to PWM and cascade control.

Free
PWM Strategies for Full-Bridge Inverter (Free Mini-Course)

PWM Strategies for Full-Bridge Inverter

Explanation and comparison of three PWM strategies for a full-bridge inverter - bipolar, standard unipolar, and fast-slow leg - with analytical equations and Python examples.

Free
The Single-Phase Rectifier (Free Course)

The Single-Phase Rectifier

How you turn the AC grid into the DC a battery wants - starting with four diodes and a capacitor, seeing why that draws a spiky current the grid hates, and then building the boost power-factor corrector that draws a clean sine instead.

Free
Grid-Forming Control of a Single-Phase Inverter

Grid-Forming Control

A grid-following inverter controls current into a voltage that already exists. A grid-forming inverter must establish that voltage. Starting from the current controller and PWM developed in the bidirectional single-phase inverter course, this course adds the voltage and outer control layers that make droop and VSG operation possible.

Free

Tools

All tools →
Interactive

Buck converter simulator

Pick the topology, write the control loop in C, and run a real switched-converter simulation that closes the loop cycle by cycle.
Interactive

Single-phase inverter simulator

Switch the H-bridge or run the averaged model, write the current and power loops yourself, and watch the filter current follow its reference.
Interactive

Boost PFC simulator

Write both loops, regulate the DC bus above the grid peak, and shape a spiky rectifier current back into a sine.
Interactive

Plot Explorer

Drop a multi-parameter sweep dataset and explore it: choose the axes, drag sliders for the rest. Nothing is uploaded.

Simulation models

See all 11 models →
Boost PFC

Boost PFC

A Simulink model of a boost PFC with an inner current controller and an outer voltage controller.

 Totem-Pole PFC

Totem-Pole PFC

A totem-pole PFC in Simulink with inner current and outer voltage control.

 Half-Bridge PWM in Simulink

Half-Bridge PWM in Simulink

A half-bridge PWM in Simulink - one triangular carrier, one switch pair, two-level output.

 3-Phase Inverter in dq-frame (with PLL and Current Control)

3-Phase Inverter in dq-frame (with PLL and Current Control)

A 3-phase inverter in dq-coordinates: Clarke + Park transforms, a PLL for grid synchronisation, and a decoupled PI current controller.