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This page lists all eHS solvers description and specificities per generation.

Generation

New Features

eFPGASIM version

Gen5

  • Support of Interpolation on switching event

  • Minimum Time step : 90ns

  • New circuit analysis method : State Space equation

  • Support of higher order of discretization : ART X

  • LCA deprecated

  • Support of OPAL-RT Schematic Editor

  • Support De-coupling capability (requires High performance license)

2.7+ Beta

3.X

Gen4

  • Minimum Time step : 200ns

  • Major upgrade of Gen3

    • Support single cycle model coupling (FD Line - Saturable Transformer)

  • Support of OPAL-RT Schematic Editor

2.X - 3.X

Gen3

  • Minimum Time step : 200ns

  • Nodal circuit analysis

  • Backward Euler discretization

  • Introduction of LCA (Loss compensation algorithm)

    • 2-Level Converter

    • Neutral Point Clamped Converter

1.X

Deprecated in 2.0


Limitations

Status
colourBlue
titleSCHEMATIC EDITOR WORKFLOW

eHS Gen4

Currently, eHS Gen4 supports all components available in the Schematic Editor apart from the new Single Phase Cyclo Converter

Version

Features

Limitations

From
eFPGASIM 2.9

eHS Gen4

Single Phase Cycloconverter

The following basic components

are 

is NOT supported:

Image Removed

eHS Gen5

Version

Features

Limitations
Image Added

From

eFPGASIM 2.

8eHS Gen5There is currently NO Gen5 firmware including any machine.

17

3-lvl T-Type

The following basic components is NOT supported:

image-20240124-145750.pngImage Added

From

eFPGASIM 2.

8eHS Gen5

19

De-coupling blocks

The following basic components

are 

are NOT

 yet

supported:

Switches

image-20240911-155248.pngImage Added

Name

eHS Gen5

Picture

Version

Diode

Features

Image Removed
Ideal Switch
Image Removed
Breaker
Image Removed

IGBT with Antiparallel Diode

Image Removed

3-Level NPC Arm

Image Removed
IGBT
Image Removed
Thyristor
Image Removed
FET
Image Removed

FET with Antiparallel Diode

Image Removed

Limitations

From
eFPGASIM 2.8

Gate Control

The Polarity

parameter CANNOT 

parameter CANNOT be assigned to Low. Only active high is supported at the moment.

eHS Naming Limitations

Known problems with using specific non-ASCII characters in some fields. These are summarized here.

...

Field

Limitations

Schematic Editor - names of components

in names of in/outputs, “/” are transformed into “-” from Simulink’s side.

eHS OpalBoards block - block name

a clear error is seen on build whenever a character is used in the eHS block name that is not alphanumeric or in the list seen above (space, underscore, etc). I would call this limitation already documented, since the error is already well-reported and points the user to the problem reasonably well.

eHS S-Function block - block name

error is seen on build if the name of an eHS block contains an odd number of (“) double quote characters.

Aside from the special cases mentioned above, these fields seem to work for all UTF-8 characters (models build, load and run).