Charles Onambele, Augustin Mpanda, Moataz Elsied, Francesco Giacchetti

Co-simulation Modeling of High Performance Motor-drive

Systems for Aerospace applications

HyPerMAC H2020 project ( Hyper Performance Motor Air-Cooled) Purpose: design a new motor-drive to replace helicopter Fenestron® tail rotor with high reliability, safety and

high power-to-weight/power-to-volume ratio

Our Location: Amiens, Hauts-De-France Region, France

Our research axis: Electrical engineering

Energy and Building

Production Systems

Computer and Telecommunications

Introduction

Problem formulation Motor-drive systems are made of elements that need to be accurately modeled to achieve a reliable simulation Electrical motor – Power converter – Control System

To ensure a high level of accuracy, options are: Independent 3D electrical motor model + Independent Circuital model of converter + Independent Control system =>

Too heavy and long computation time

Advanced Motor and Control model + Independent Circuital converter model => Accurate yet fast solution

System Description Heaxaphase Power electronic converter : Six full bridges made of two 180A/1,200V SiC (Silicon Carbide) half-bridge power modules per phase

SiC MOSFET: BSM180D12P2C101 ROHM® power module

Motor and control model in Simulink: Motor modeled based on data extracted from an Ansys Finite Element (FE) model:

Extraction of torque and flux data, computation of nonlinearity functions, independent phase current control

Converter model in Simplorer: Accurate SiC characterization of the chosen power module based on datasheet curves

PMSM Motor FE Analysis

Problem formulation and System description

Results and Discussion

Conclusion

Power [kW] 120

Pole pairs 11

Peak Phase current [A] 100 / 140 A

Torque [Nm] 350

Speed [rpm] 3,600

Frequency[Hz] 660

Input Inverter Vdc [V] 540

Flowchart of the control / Motor speed (rpm), Phase current (A) and Torque (Nm)

Power converter model, Gate-to-Source voltages from Simulink / BEMF voltage and output current,

Output voltage from Simplorer to Simulink / Input current, input voltage, input power, output power of

one phase of the motor-drive system

The motor is controlled in current

The in put voltage is kept at 540 V

The instantaneous input and output power are computed

The efficiency of the power converter achieved is respectively 97% and 94% for the normal and overload

conditions.

This paper deals with the developpment of a Matlab-Simulink/Ansys-Simplorer co-simulation model used to evaluate the

performance of a Silicon Carbide (SiC) based drive for aerospace applications.

The converter is modeled in Simplorer

The motor and its controller are modeled in Matlab/Simulink

The presented models allow the consideration of nonlinearities

The proposed co-simulation models aid in the evaluation of the interaction between the electrical machine and the

power electronic converter in a realistic case study for aerospace applications