3-phase Rectifier

Build the Bridge rectifier

To build 3-phase rectifier, we need more space to put more diodes and voltage sources. Left-click and draw the mouse to select the simulation which we configured in previous part (step 1). Hold down the mouse and move the simulation to the right side in order to keep some space for the 3-phase rectifier (step 3).

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Left-click and draw to select the single-phase rectifier (step 1) until all the components change to be dotted. Click Delete key on the keyboard to delete the rectifier (step 2). Then only keep the resistor load, the LC filter and the scope (step 3).

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Left-click Components/Circuit/Semiconductors/D (step 1) and release the mouse. Right-click the mouse to change the direction of the diode (step 2). Until the diode’s direction is upward, left-click on the workscreen to put the diode namely D1 (step 3).

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Similarly, left-click Components/Circuit/Semiconductors/D (step 1) several times to put some more diodes D2, D3, D4, D5 and D6 (step 2).

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Give an AC source

Connect all the diodes with the following configuration (step 1). Left-click Components/Circuit/Sources/VAC50Hz (step 2) and release the mouse. The voltage source VAC50Hz follows the cursor and right-click to change its direction (step 3). Until its direction is horizontal, left-click to put it on the workscreen (step 4).

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Left-click Components/Circuit/Sources/VAC50Hz120D (step 1) and release the mouse. Left-click to put it below VAC50Hz. Similarly, left-click Components/Circuit/Sources/VAC50Hz240D (step 1) and release the mouse. Then put it below VAC50Hz120D. Make sure the positions and the directions of these voltage sources are shown as below. Right-click one of the voltage sources (step 2). Unselect the show option (step 3) to hide its name and parameter, and click OK (step 4) to save the setting. Repeat the same steps for the other two voltage sources.

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Then connect the three voltage sources by drawing a line from the anode of VAC50Hz (first voltage source) to the anode of VAC50Hz240D (third voltage source) (step 1). Connect the cathode of VAC50Hz to the anode of D1 (step 2). Connect the cathode of VAC50Hz120D (second voltage source) to the anode of D2, and VAC50Hz240D to the anode of D3 (step3). Please notice that we must draw the connection line from the voltage sources to the anodes of upper diodes.

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Give a resistor load to the rectifier

Here we keep the resistor from the previous simulation.

Build a LC ripple Filter to stabilize the magnitude of the DC output voltage.

Here we keep the LC filter from the previous simulation.

To increase the input trace number of the scope, right-click the scope (step 1). In the pop-window, go to menu bar and select Trace/Number of Traces (step 2). Set the number of traces to 4 to have 3 more input trace (step 3), and click OK to save the setting.

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Use the second red input trace to measure the current value via D1 (step 1). Right-click the red dot of second input trace (step 2). In the pop-window, set Trace = Current through: D1 (step 3) and click OK to save the setting (step 4).

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Use the third celeste input trace to measure the current value via D2 (step 1). Right-click the celeste dot of third input trace (step 2). In the pop-window, set Trace = Current through: D2 (step 3) and click OK to save the setting (step 4).

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Use the fourth green input trace to measure the current value via D3 (step 1). Right-click the green dot of fourth input trace (step 2). In the pop-window, set Trace = Current through: D3 (step 3) and click OK to save the setting (step 4).

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Click the shortcut of simulation parameter to configure the simulation parameters (step 1). In the pop-window, set the numerical integration method to Euler (step 2), Tscreen = 100m, dt= 100u (step 3), and click OK to save the setting.

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Click the shortcut of start simulation (step 1). Right-click the scope (step 2) to get the detail of the simulation result (step 3).

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Click one of the shortcuts (step 1) to enable the numeric display of simulation result (step 2).

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Add three identical inductors between the bridge rectifier and the 3-phase voltage source to complete a voltage rectifier.

Click and hold down the Ctrl key on the keyboard (step 1). Select the three lines between these voltage sources and the bridge rectifier by left-clicking the mouse (step 2). Make sure the three lines are all dotted. Release the Ctrl key and the mouse. Click Delete key on the keyboard (step 3) to delete the three dotted lines.

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Left-click and draw to select the three voltages source (step 1). Move them by holding down the left-click (step 2). Release the mouse to put them a bit farther to have more space for three inductors (step 3).

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Left-click Components/Circuit/RLC/L (step 1) and release the mouse. The inductor follows the cursor and then right-click to change its direction (step 2). Until the cathode of the inductor is toward the left side, left-click to put it to connect with the first voltage source (VAC50Hz). Right-click on the inductor namely L2 (step 3) to verify its parameter. In the pop-window of the inductor L2, make sure its value is 1e-3 or 1m (step 4) and click OK to save the setting (step 5).

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Left-click Components/Circuit/RLC/L (step 1) and put this inductor L3 with the second voltage source. Repeat the same steps for the third voltage source and get the inductor L4. Make sure that L3 connects to the second voltage source and L4 connects to the third one. Then change the setting of the two inductors by right-clicking the inductors (step 2). In their pop-window, make sure that the value = 1-e3 or 1m (step 3), and click OK to save the setting.

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Connect the three inductors L2, L3 and L4 with the 3-phase rectifier with the following configuration (step 1). Click the shortcut of start simulation (step 2) and see the simulation result is shown in scope. Right-click the scope (step 3) and get the detail result (step 4).

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Click the shortcut of listbox (step 1) to enable the numeric display of simulation result (step 2).

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