HVDC Converter Commutation Overlap Calculator

HVDC Transmission Systems: Compute thyristor commutation overlap angle ($\mu$), DC output voltage ($V_d$), and reactive power demand in 6-pulse/12-pulse converters.

Converter & Transformer Ratings

AC Line-Line Voltage $V_{LL}$ (kV):

DC Current $I_d$ (A):

Firing Angle $\alpha$ (deg):

Commutation Reactance $X_c$ ($\Omega$):

Converter Pulse Configuration:

DC Output Voltage & Overlap Results

Overlap Angle ($\mu$)

-- °

DC Voltage ($V_d$)

-- kV

DC Power ($P_d$)

-- MW

Reactive Power ($Q$)

-- MVAR

Commutation Voltage Drops

• Ideal No-Load DC Voltage ($V_{d0}$): -- kV

• Commutation Reactance Drop ($d_x = \frac{3 X_c I_d}{\pi}$): -- kV

• Extinction Angle ($\gamma = 180^\circ - \alpha - \mu$): -- °

• Converter Power Factor ($\cos \phi \approx \frac{\cos\alpha + \cos(\alpha+\mu)}{2}$): --

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HVDC Converter Commutation Overlap Calculator

Converter & Transformer Ratings

DC Output Voltage & Overlap Results

Commutation Voltage Drops

Frequently Asked Questions