FEMT: new interface for Inputs

Introduction

From FeMT 2024.1, the interface of the input "Command mode" has been improved and completed by a new input "Computation mode".

Command Mode (Updated) Computation Mode (New)

Updated input: Command mode

There are now only two types of Command mode:
  • MTPA: Maximum Torque Per Ampere
  • MTPV: Maximum Torque Per Volt

The other two command modes MTPA Fast and MTPV Fast have been removed, but new field has been created, entitled Computation mode.

New input: Computation mode

Two test computation modes are available:
  • TM: corresponds to the solving process called standard in the previous versions, i.e. the former MTPA and MTPV command modes.

    Solving is performed in Transient Magnetic. This mode allows to compute iron losses and magnet losses.

  • MS mono-position: corresponds to the solving process called fast in the previous versions, i.e. the former MTPA Fast and MTPV Fast command modes.

    Solving is performed in Magneto Static for a single rotor position. This mode does not allow to compute iron losses nor magnet losses.

Command line

Here is the syntax for the two new computation modes:
  • For the TM computation mode:
    ComputationMode=TM
  • For the MS mono-position computation mode:
    ComputationMode=MS_MONO_POS

Comparison before/after 2024.1

Here is the table showing the correspondence between the command modes with versions prior to 2024.1 and the new command and computation modes with version 2024.1:

Before 2024.1 From 2024.1
Command Mode Command Mode Computation Mode
MTPA MTPA TM
MTPA Fast MS mono-position
MTPV MTPV TM
MTPV Fast MS mono-position