What are the purposes of the inductor coil "L" and the capacitor "C" respectively of the three phase controlled rectifier as illustrated in figure "F" of the illustration? See illustration EL-0154.
• Inductors in DC output circuits and how they react to changes in current • Capacitors across DC buses and how they react to changes in voltage ripple • The placement of L in series with the load and C in parallel with the DC output in a rectifier filter
• Look at where the inductor L is connected in the circuit: is it directly in series with the DC load or across the DC output? What quantity does a series element mainly influence? • Look at where the capacitor C is connected: does it bridge the positive and negative DC lines? What electrical quantity does a shunt (parallel) element mainly stabilize? • Think about which component resists sudden changes in current and which resists sudden changes in voltage, then match that behavior to the answer choices.
• Confirm that inductors oppose rapid changes in current (they try to keep current flowing smoothly). • Confirm that capacitors oppose rapid changes in voltage (they try to keep voltage level more constant). • Verify from the figure that L is in series with the DC load path and C is connected across the DC output before choosing your option.
No comments yet
Be the first to share your thoughts!