Control and Measurements

Pulse generators, filters, signal transformation blocks

Generate pulses, transform, filter, analyze, and measure signals.

Blocks

Measurement

Voltage Measurement	Measure voltage in circuit
Current Measurement	Measure current in circuit
Three-Phase V-I Measurement	Measure three-phase currents and voltages in circuit
Multimeter	Measure voltages and currents specified in dialog boxes of Simscape Electrical Specialized Power Systems blocks
Impedance Measurement	Measure impedance of circuit as function of frequency

Analysis

Digital Flickermeter	Implement digital flickermeter as described in IEC 61000-4-15 standard
Fourier	Perform Fourier analysis of signal
Frequency (Phasor)	Measure phasor signal frequency
Fundamental (PLL-Driven)	Compute fundamental value of signal
Mean	Compute mean value of signal
Mean (Phasor)	Compute mean value of input phasor over a running window of one cycle of specified frequency
Mean (Variable Frequency)	Compute mean value of signal
PMU (PLL-Based, Positive-Sequence)	Implements a phasor measurement unit using a phase-locked loop
Positive-Sequence (PLL-Driven)	Compute positive-sequence component of three-phase signal at fundamental frequency
Power	Compute active and reactive powers of voltage-current pair at fundamental frequency
Power (3ph, Instantaneous)	Compute three-phase instantaneous active and reactive powers
Power (3ph, Phasor)	Compute three-phase active and reactive powers using three-phase voltage and current phasors
Power (PLL-Driven, Positive-Sequence)	Compute positive-sequence active and reactive powers
Power (Phasor)	Compute active and reactive powers using voltage and current phasors
Power (Positive-Sequence)	Compute positive-sequence active and reactive powers
Power (dq0, Instantaneous)	Compute three-phase instantaneous active and reactive powers
RMS	Compute true root mean square (RMS) value of signal
Sequence Analyzer	Compute positive-, negative-, and zero-sequence components of three-phase signal
Sequence Analyzer (Phasor)	Compute sequence components (positive, negative, and zero) of three-phase phasor signal
THD	Compute total harmonic distortion (THD) of signal

Pulse and Signal Generators

Overmodulation	Add third harmonic or triplen harmonic zero-sequence signal to three-phase signal
Pulse Generator (Thyristor)	Generate pulses for twelve-pulse and six-pulse thyristor converters
PWM Generator (2-Level)	Generate pulses for PWM-controlled 2-level converter
PWM Generator (3-Level)	Generate pulses for PWM-controlled three-level converter
PWM Generator (DC-DC)	Generate pulse for PWM-controlled DC-DC converter
PWM Generator (Interpolation)	Carrier-based unipolar PWM generation with interpolation
PWM Generator (Multilevel)	Generate pulses for PWM-controlled modular multilevel converter
PWM Generator (Pulse Averaging)	Carrier-based PWM generator with pulse averaging
Sawtooth Generator	Generate sawtooth waveform at regular intervals
Stair Generator	Generate signal changing at specified transition times
SVPWM Generator (2-Level)	Generate pulses for SVPWM-controlled two-level converter
SVPWM Generator (3-Level)	Generate pulses for SVPWM-controlled three-level converter
Three-Phase Programmable Generator	Generate three-phase signal with programmable time variation of amplitude, phase, frequency, and harmonics
Three-Phase Sine Generator	Generate three-phase balanced signal, amplitude, phase, and frequency controlled by block inputs
Triangle Generator	Generate symmetrical triangle waveform at regular intervals

Transformations

Alpha-Beta-Zero to dq0, dq0 to Alpha-Beta-Zero	Perform transformation from αβ0 stationary reference frame to dq0 rotating reference frame or the inverse
abc to Alpha-Beta-Zero, Alpha-Beta-Zero to abc	Perform transformation from three-phase (abc) signal to αβ0 stationary reference frame or the inverse
abc to dq0, dq0 to abc	Perform transformation from three-phase (abc) signal to dq0 rotating reference frame or the inverse

Filters

First-Order Filter	Implement first-order filter
Lead-Lag Filter	Implement first-order lead-lag filter
Second-Order Filter	Implement second-order filter
Second-Order Filter (Variable-Tuned)	Implement second-order variable-tuned filter

Phase Lock Loop

PLL	Determine frequency and fundamental component of signal phase angle
PLL (3ph)	Determine frequency and fundamental component of three-phase signal phase angle

Logic

Bistable	Implement prioritized S-R flip-flop (bistable multivibrator)
Edge Detector	Detect change in logical signal state
Monostable	Implement monostable flip-flop (one-shot multivibrator)
On/Off Delay	Implement switch-on or switch-off delay

Additional Components

Sample and Hold	Sample first input and hold its value based on value of second input
Discrete Shift Register	Implement serial-in, parallel-out shift register
Discrete Variable Time Delay	Delay signal by variable time value

Functions

`power_fftscope`	Fourier analysis of simulation data signals
`power_flicker`	Perform statistical analysis of instantaneous flicker level signal
`power_zmeter`	Compute impedance versus frequency of Impedance Measurement blocks of model

Topics

Park Transformation
Express direct axis, quadratic axis, and zero-sequence components as phase quantities using Park transforms.
Simulate Variable Speed Motor Control
Model and discretize simple motors with specialized blocks. Use the FFT Analysis tool of the Powergui block to perform harmonic analysis.

Featured Examples

Three-Phase Programmable Source, V-I Measurement and Sequence Analyzer

The use of the 3-Phase Programmable Voltage Source, 3-Phase V-I Measurement, and Sequence Analyzer blocks.

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Three-Phase Programmable Source, PLL, Voltage and Power Measurement

The use of the 3-Phase Programmable Voltage Source, PLL and Variable-Frequency Positive-Sequence Voltage and Power Measurement blocks.

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Performance of Frequency Measurement (Phasor)

The use of two Frequency (Phasor) blocks to measure the frequency variation in a network following a line outage.

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PMU (PLL-based, Positive-Sequence) Kundur's Two-Area System

The use of the PMU (PLL-Based, Positive-Sequence) block within the Kundur's Two-Area System.

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PMU (PLL-based, Positive-Sequence) Benchmark

The use of a phasor measurement unit - PMU (PLL-based, Positive-Sequence) in a benchmark circuit.

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Flickermeter Statistical Analysis Module

A method to compute short-term flicker severity of a phase-to-ground voltage taken from one feeder of a given remote community.

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Flickermeter on a Distribution STATCOM

A flickermeter model designed according to functional specifications of the international standard IEC 6100-4-15 [1].

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