Simulation
The program in the applet to follow displays the bridge output waveform,
the load current, the line current, the voltage across the load inductance,
the voltage across the source inductance, the voltage across SCR S1,
and the currents through S1 and S4. Key-in the ratio
wLL/RL, the ratio wLs/RL and the
firing angle in degrees and then click on the Start button.
click here to open the applet
The program to follow produces the statistics for this circuit and needs
the same inputs as the applet above.
click here to open the applet
The next applet displays the transient response of the load current. If the
load inductance is large, the transient response may last for a few cycles
before it settles down to a periodic response. The load current starts building
up from zero from the instant one of the pairs of SCRs is triggered first.
The response shown starts from this instant.
click here to open the applet
The next applet shows how the average bridge output voltage, the rms output
voltage, and the ripple factor vary with firing angle for a given set of wLL/RL
and wLs/RL. This program may take some time to run.
click here to open the applet
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