Boost Converter

Purpose

Boost converter with filter inductance

Library

Electrical / Nanostep

Description

../../_images/nanostep_boost.svg

This component implements a boost converter including the filter inductor. The converter offers two configurations:

Sub-cycle average: The gate input is a floating-point number with values between 0 and 1 representing the relative on-time of the controlled semiconductor over one simulation step. This technique is suited for real-time simulation on a CPU or a FlexArray solver.
Nanostep / Switched: The converter is simulated with time steps in the single-digit nanosecond range. The required Nanostep solver is available exclusively on the RT Box. Both sides of the converter have current source behavior and must each be connected directly to a capacitor or a voltage source. The implementation has a weight of 1, which means it occupies 1/3 of a Nanostep solver. For offline simulation, all power semiconductors in the converter are modeled with ideal switches. The individual switches are controlled with instantaneous logical gate signals. A switch is turned on when the corresponding gate signal is true.

Note

The Sub-cycle average and the Nanostep implementation cannot simulate a clamping of the DC output. Therefore, the output voltage must never become negative.

Parameters

Configuration: Allows you to chose between Sub-cycle average or Nanostep / Switched configuration.
Switch model (CPU code generation): If the Configuration is set to Sub-cycle average, this parameter selects the switch model when CPU code is generated.
Semiconductor symbol: This setting lets you choose between IGBT and MOSFET for the symbol of the active semiconductor switch. It does not change the electrical behavior of the converter in simulation.
Inductance: A non-zero scalar specifying the filter inductance, in henries \((\mathrm{H})\).
Winding resistance: A scalar specifying the winding resistance, in ohms \((\Omega)\).

Nanostep Probe Signals

See Fig. 255 for the probe signal positions.

../../_images/nanostep_boost_probe_signals.svg — Fig. 255 Probes for the Boost Converter

Inductor current: The current flowing into of the converter.
DC link current: The current flowing from the converter into the DC link.
Gate signal: The gate signal applied to the active semiconductor switch.