Bidirectional Phase-Shifted Full-Bridge Converter
Purpose
Bidirectional phase-shifted full-bridge converter with optional series capacitor, optimized for Real-Time Simulations on the RT Box.
Library
Electrical / Nanostep
Description
This component implements a bidirectional phase-shifted full-bridge converter with free-wheeling on the secondary side. A series DC blocking capacitor to prevent transformer saturation is optional.
Both sides of the converter have current source behavior and must each be connected directly to a capacitor or a voltage source.
The power semiconductors are modelled as ideal switches controlled by instantaneous logical gate signals. A switch is turned on when the corresponding gate signal is true.
C code generated from this component is suitable for real-time simulations on the RT Box, where it is executed on a Nanostep solver. In this case, connect the gate inputs to PWM Capture blocks from the RT Box component library.
Note
This component has a Nanostep solver weight of \(3\), indicating that it occupies one entire Nanostep solver for Real-time Simulations on the RT Box.
Note
The voltage sources connected to the converter must not be short-circuited. Therefore, combinations of switching signals that cause shoot-through of DC links are not permitted. Additionally, DC voltages across diodes must not be negative, as DC voltage clamping through diodes is not permitted.
Parameters
Certain parameters are associated with specific components. The corresponding component labels such as \(\mathrm{L}\), \(\mathrm{C}\), etc., are shown in Fig. 258.
- Include primary capacitor
Allows you to include (
yes) or remove (no) a DC blocking capacitor at the primary side, to prevent transformer saturation.- Primary capacitance
If the Include primary capacitor option is set to
yes, this parameter requires a non-zero scalar for the capacitance \(\mathrm{C}\), in farads \((\mathrm{F})\).- Primary inductance
A non-zero scalar specifying the primary-side inductance \(\mathrm{L}\), including the transformer leakage inductance and any external series-connected inductor, in henries \((\mathrm{H})\).
- Winding resistance
A scalar specifying the winding resistance \(\mathrm{R_L}\), in ohms \((\Omega)\).
- Include magnetizing inductance
Allows you to include (
yes) or remove (no) the magnetizing inductance \(\mathrm{L_m}\) on the transformer primary side.- Magnetizing inductance
If the Include magnetizing inductance option is set to
yes, this parameter requires a non-zero scalar specifying the magnetizing inductance of the transformer \(\mathrm{L_m}\), referred to the primary side, in henries \((\mathrm{H})\).- Turns ratio
A scalar specifying the ratio of primary-side turns to secondary-side turns.
- Filter inductance
A non-zero scalar specifying the filter inductance \(\mathrm{L_f}\), in henries \((\mathrm{H})\).
- Filter resistance
A scalar specifying the filter winding resistance \(\mathrm{R_{Lf}}\), in ohms \((\Omega)\).
- Assertions
When set to
on, the block flags an error for combinations of gate signals that cause shoot-through.
Probe Signals
See Fig. 258 for the probe signal positions.
- Inductor current
The current through the inductor \(\mathrm{L}\), in amperes \((\mathrm{A})\), defined positive in the direction of the arrow.
- Magnetizing current
The current through the inductor \(\mathrm{L_m}\), in amperes \((\mathrm{A})\), defined positive in the direction of the arrow.
- Capacitor voltage
The voltage across the capacitor \(\mathrm{C}\), in volts \((\mathrm{V})\), defined positive at the side marked with (+).
Nanostep Probe Signals
- Inductor current
The current through the inductor \(\mathrm{L}\), in amperes \((\mathrm{A})\), defined positive in the direction of the arrow.
- Magnetizing current
The current through the inductor \(\mathrm{L_m}\), in amperes \((\mathrm{A})\), defined positive in the direction of the arrow.
- Primary current
The current at the primary-side converter terminals, in amperes \((\mathrm{A})\), defined positive in the direction of the arrow.
- Filter current
The current through the inductor \(\mathrm{L_f}\), in amperes \((\mathrm{A})\), defined positive in the direction of the arrow.
- Snubber current
The current through the snubber switch, in amperes \((\mathrm{A})\), defined positive in the direction of the arrow.
- Capacitor voltage
The voltage across the capacitor \(\mathrm{C}\), in volts \((\mathrm{V})\), defined positive at the side marked with (+).
- Primary gate signals
A vector containing the gate signals of the primary-side semiconductor switches.
- Secondary gate signals
A vector containing the gate signals of the secondary-side semiconductor switches.
- Snubber gate signal
The gate signal of the snubber semiconductor switch.
Fig. 258 Probe Signals for the Bidirectional Phase-Shifted Full-Bridge Converter
↳ Added in PLECS 5.0.