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Full-Bridge Converter (Switching Devices)


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.

NOTEIn 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}

DescriptionUse this field to add all kinds of information about the component
Description = {'string'}
Diode on-state resistanceInternal resistance of the internal GTO/diodesOhmRclose  = { [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.comhttps://www.mathworks.com/help/physmod/sps/powersys/ref/fullbridgeconverter.html

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


See Also

OPAL-RT TECHNOLOGIES, Inc. | 1751, rue Richardson, bureau 1060 | Montréal, Québec Canada H3K 1G6 | opal-rt.com | +1 514-935-2323
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