Stationary Reference Frame (αβ)
The Clarke transformation maps balanced three-phase systems into a two-dimensional stationary reference frame, representing oscillating quantities as a single rotating space vector.
Articles
Technical deep-dives into power systems engineering topics.
From Sinusoids to Rotating Vectors
Understanding how sinusoidal waveforms relate to rotating vectors and reference frames—the foundation for multi-dimensional power system analysis.
Per-Unit System: Common Mistakes in EMT and RMS Studies
Identifying and preventing common per-unit mistakes in RMS and EMT power system simulations.
Per-Unit System: Changing Base Across Transformers and Networks
Understanding when and how to change base quantities in per-unit systems, particularly across transformers and multi-voltage networks.
Per-Unit System: Base Quantities and Their Relationships
How base quantities are defined, how they relate to each other, and how they propagate through a power system model.
Per-Unit Impedance from Physical Parameters
Converting physical resistance, inductance, and capacitance into per-unit values for RMS and EMT studies.
Per-Unit System in Power Systems: Concept and Why It Works
Understanding the conceptual foundation of the per-unit system—why normalisation is necessary, why it works, and what it does not do.
Transmission Line Behaviour: Inductive or Capacitive
A practical framework for understanding when transmission lines behave inductively or capacitively, based on surge impedance loading and characteristic impedance.