See 6-Pulse Bridge (g6p200_2) for updated model.
This component is a compact representation of a DC converter, which includes a built in 6-pulse Graetz converter bridge (can be inverter or rectifier), an internal Phase Locked Oscillator (PLO), firing and valve blocking controls and firing angle (a)/extinction angle (g) measurements. It also includes built in RC snubber circuits for each thyristor.
The general idea here is to eliminate the complex and tedious process of building a thyristor bridge, putting together controls, and coordinating the valve firing pulses involved in modeling an HVDC converter.
The 6 Pulse Bridge possesses the following external inputs and outputs:
ComBus: Input signal to the internal Phase Locked Oscillator. This input is connected to the commutation bus though the Node Loop component as shown below:
AO: Input alpha order (firing angle) for the converter.
KB: Input block/deblock control signal. See Firing and Blocking Control for more details.
AM: Measured alpha (firing angle) output [rad].
GM: Measured gamma (extinction angle) output [rad].
More: |
Internal Phase Locked Oscillator (PLO) Choosing a Converter Transformer |