# Public Beta 5 (2020.11.19)

Welcome to the Public Beta 5 of SIMBA. There are a few updates that we hope you will like. If you haven’t yet, be sure to download it. The complete list of changes is available here.

## New Induction Machine Model

A new Squirrel Cage Induction Machine model is available in the *Electrical>Motors* library.

## New non-ideal transformer model

A new 2 Winding, non-ideal Transformer model is available in the *Electrical>Transformer* library.

## Model parameters syntax

Model parameters can now use metric units and mathematical expressions.

Accepted suffixes are:

Suffix | Coefficient |
---|---|

p | 10E-12 |

n | 10E-9 |

u or µ | 10E-6 |

m | 10E-3 |

k | 10E3 |

M | 10E6 |

G | 10E9 |

Simple Mathematical expressions can also be used in parameter evaluations.

Basic operators (+, -, *, ^, !), constants (pi, e...) and math functions (sin,cos...) are supported.

Important

Expression are evaluated when simulation starts and a Syntax error is thrown if it can't be processed.

## Division

A new Division control model is available in the *Control>Math* library.

## New Example: Induction Motor Drive with v/f control

This example shows an Induction Motor Drive with v/f control.

## Backward Compatibility

Important

Due to changes in our database format, SIMBA Beta 5 can't open files saved in previous versions. If you wish to convert a file to the new version, please send it to manu@aesim.tech. This is the last time backward compatibility is broken.

## Quality of life

In Beta 5, several bugs are corrected and the general stability of SIMBA is improved.

## Roadmap

If you are interested, you can check our roadmap and a public GitHub project is available to share ideas, report bugs, and suggest new features.