What is the effect of source inductance on converter?

The presence of source inductance does have significant effect on the performance of the converter. With source inductance present the output voltage of a converter does not remain constant for a given firing angle. Instead it drops gradually with load current.

What causes circulating current in dual converter?

What causes circulating current in dual converters? Explanation: In case of practical dual converters, the voltages from both the converter circuits though equal in magnitude is out of phase. This indifference in voltages causes circulating currents to flow.

What is commutation angle of a rectifier?

The commutation period when outgoing and incoming thyristors are conducting is known as overlap period. The angular period, when both devices share conduction is known as the commutation angle or overlap angle.

What is the effect of chopping frequency on the load ripple current?

A. chopping frequency on load ripple current:Speaking very generally, for a fixed inductance increasing the switching frequency will decrease the inductor ripple current and usually the output voltage ripple. It will increase switching losses and decrease efficiency.

What is the role of source and load inductance in chopper circuit?

In the circuit, a large inductor L is connected in series to the supply voltage. Capacitor maintains the continuous output voltage to the load. The diode prevents the flow of current from load to source. When the chopper is ON, supply voltage VS is applied to the load .

Why capacitor and inductor are used in buck converter?

The inductor and capacitor are used to control, store and transfer energy from the input to output depending on the state of the switch, either on or off. For the Buck converter to operate to a specific set of output parameters the inductor and capacitor must be sized correctly.

What is commutation inductance?

Commutation is the process when conduction switches from one supply phase to another. Commutation overlap occurs when there is inductance in the supply circuit of a diode (or thyristor) rectifier. It can be seen by adding a supply inductance to the 3-phase supply in the diode rectifier simulation.

What will happen if the firing angle is greater than 90 degrees?

Now, if the firing angle is more than 90 deg, then the delay angle of input ac current is also more than 90 deg. Thus, now power is flowing out and not in to the ac side input. remember that the power is now flowing out from the dc side energy source to the ac line.

What is the effect of a load inductance on the load ripple current?

Source inductance has a significant impact on the converter performance because its presence alters the output voltage of the converter. As a result, the output voltage reduces as the load current reduces. In addition, the input current and output voltage waveforms change significantly.

How does source inductance affect the output voltage?

What happens if there is no source inductance?

If there were no source inductance T3 and T4 would have commutated as soon as T1 and T2 are turned ON. The input current polarity would have changed instantaneously. However, if a source inductance is present the commutation and change of input current polarity cannot be instantaneous.

Is the source impedance of a converter inductive?

Most of the converter analysis is generally simplified under the ideal conditions (no source impedance). But this statement will not be justified as source impedance is basically inductive with a small resistive element.

Which is inductance shared by gate driver loop?

Common source inductance is the inductance shared by gate driver loop and main power transfer path. Minimization of common source inductance has been accepted as a common design rule for power converters involve power MOSFET. In this paper, the effects of commons source inductance for control and sync FET are explored in detail.