The Full-Bridge Converter (Switching Devices) component is a single-phase power converter model developed from IGBT and diode elements. The converter is modeled with GTO/diode pairs controlled by firing pulses produced by a PWM generator. Normally used with time steps of 100 to 200 times smaller than the period of the carrier of the PWM generator, this component provides precise off-line simulation results.

NOTE: In order to obtain accurate results, the option Activate iterative method in Simulation Settings must be selected when using this component.

Mask and Parameters

Parameter Name	Description	Unit	Variable = {Possible Values}
Description	Use this field to add all kinds of information about the component		Description = {'string'}
Diode on-state resistance	Internal resistance of the internal GTO/diodes	Ohm	Rclose = { [1e-12, 1e12] }
Diode snubber resistance	Snubber resistance of the internal GTO/diodes	Ohm	Rsnubber = { [1e-12, 1e12] }
Diode snubber capacitance	Capacitance of the internal GTO/diodes	F	Csnubber = { [1e-12, 1e12] }

Ports, Inputs, Outputs and Signals Available for Monitoring

Ports

Name	Description
1	Network connector on the AC side (supports only 1-phase connections)
2	Network connector on the AC side (supports only 1-phase connections)
DCplus	Network connector on the DC side. The sign + indicates the positive side (supports only 1-phase connections)
DCminus	Network connector on the DC side. The sign - indicates the negative side (supports only 1-phase connections)

Inputs

Name	Description
P	Vectorized signal containing four firing pulses to control the converter

Outputs

Name	Description
V	Vectorized voltage signal containing voltage on the AC side (Vac) and from the DC link (Vdc).
I	Vectorized current signal containing current on the AC side (Iac) and from the DC link (Idc).

Sensors

Name	Description	Unit
P1	Signal containing a firing pulse to control Q1.
P2	Signal containing a firing pulse to control Q2.
P3	Signal containing a firing pulse to control Q3.
P4	Signal containing a firing pulse to control Q4.
Vac	Voltage signal on the AC side of the converter.	V
Vdc	Voltage signal on the DC side of the converter.	V
Iac	Current signal from the AC side.	A
Idc	Current signal from the DC side.	A

Additional Information

The converter is modeled by 4 IGBTs/diodes controlled by firing pulses produced by a PWM generator.

The figure below shows the internal circuit of the converter that can be accessed by opening the subcircuit.

The PWM generator outputs a vectorized gating signal to control the converter. The gating signal contains 4 firing pulses. The first pulse controls the Q1 switching device, the second pulse controls the Q2 switching device, pulses three and four control the Q3 and Q4 switching devices respectively.

Limitations

This model must be used with the PWM Generator For Full-Bridge Converter (Switching Devices) available in the Control Sources library of HYPERSIM or with an input FPGA module (contact our technical support for an example).

This model does not participate in the load flow solution.

References

MathWorks, Full-Bridge Converter Mathworks.com. https://www.mathworks.com/help/physmod/sps/powersys/ref/fullbridgeconverter.html

M. H. Rashid, Power electronics handbook, 4^th ed. Butterworth-Heinemann, 2017

HYPERSIM Documentation

Full-Bridge Converter (Switching Devices)