AC-to-DC Rectifier LAB3 - Panel

When starting the demo, the panel in figure 21 appears first with the default settings.

Figure 21: Start-Up Panel of the Three-Phase Thyristor Bridge Rectifier Laboratory

For operation of the three-phase thyristor bridge rectifier panel, the student can refer to the panel operation of the single-phase diode bridge rectifier, because the panels of both models are very similar.
The differences in content of scopes, control parameters and buttons, and contents of displays are presented in tables 16 to 19.

Control Parameters	Default Value	Interval of Variation
AC Source Voltage (V)	120	[0; 200]
Firing Angle (Deg)	0	0; 120]
AC Source Frequency (Hz)	60	50 or 60

Table 16: Control Parameters of the Three-Phase Thyristor Bridge Rectifier

Control Buttons	Associated Functions
Trigger		The waveforms are not triggered. They “move”.
Trigger		The waveforms are triggered with respect to a reference signal.
Data Acq.		Data acquisition is disabled.
Data Acq.		Data acquisition is enabled and allows to record .mat files for offline studies, in particular harmonic analysis.
Fuse		The protection fuse is blown.
Fuse		The protection fuse is intact.
HELP/BACK		Open the Help page, where a summary of three-phase thyristor bridge rectifier is shown.
HELP/BACK		Close the Help page and go back to the simulations.
Switch		AC Source frequency, 50 or 60 Hz.

Table 17: Control Buttons and LED Fuse Indicators

Scope	Content of Scopes & Displayed Waveforms
Scope₁₁	AC-source voltage v_AN, load voltage, and thyristor T₁ voltage
Scope₂₁	AC-source voltage v_AN, AC-source current i_A, Fundamental of current i_A
Scope₁₂	AC-source current i_A, load current, and thyristor T₁ current
Scope₂₂	AC-source current i_A_,AC-source current i_B, AC-source current i_C

Table 18: Content of Scopes and Displayed Waveforms in Three-Phase Thyristor Bridge Rectifier

Six displays are shown on the panel.
They are located below the scopes.
From left to right they are identified as Display₁, Display₂, Display₃, Display₄, Display₅, and Display₆.

Display	Content of Displays
Display₁	AC-source power (W)
Display₂	Load power (W)
Display₃	Fundamental of AC-source current (A)
Display₄	THD of AC-source current (%)
Display₅	Mean of load current (A)
Display₆	Mean of load voltage (V)

Table 19: Content of Displays

Note

The “Save File” under Scope Parameters allows the student to give different file names for data acquisition.
It is possible to save up to eleven .mat files with the name “FileSavedcurrents_X (where X can be anywhere from 0 to 10).
The student can give X values via the “Save File”, and press “Data Acq.” for acquiring data.
The data acquired can be used for offline harmonic studies.
The saved data are in the following folder:

C:\OPAL-RT\TestDrive\v2.9.0.16\Models\ThreePhase_ThyristorRectifier\threephase_thyristorrectifier_sm_master\OpNTtarget