Control Measurements Fourier Mean (Variable Frequency) Fundamental (PLL-Driven) Mean Power (dq0, Instantaneous) Power (Three-Phase, Instantaneous) Positive-Sequence (PLL-Driven) RMS Sequence Analyzer THD Mathematical Transforms Clarke Transform Inverse Clarke Transform Park Transform Inverse Park Transform Clarke to Park Angle Transform Park to Clarke Angle Transform Symmetrical-Components Transform Inverse Symmetrical-Components Transform General Control Edge Detector First-Order Filter On-Off Delay Sample and Hold Second-Order Filter Set-Reset Flip-Flop PLL PLL (3ph) Sinks To COMTRADE SM Control Separately-Excited Exciter Self-Excited Exciter High-Frequency Exciter Brushless Exciter P-controller AVR High-Gain AVR PID-controller AVR Transformers Tap-Changer Turbine-Governors Controller LCFB1 Governor Type 1 Governor Type 3 Hydraulic Turbine and Governor Steam Turbine and Governor Sources Triangle Generator Pulse Width Modulation PWM Generator (2-Level) PWM Generator (3-Level)