Design of a power hardware-in-the-loop test bench for a traction permanent magnet synchronous machine drive
Paper i proceeding, 2020

The challenges in inverter development for traction applications are low cost, better performance, optimized design and faster time to market. A solution is to use machine emulators whose phase currents and voltages at the terminal resembles a machine connected to a mechanical load for testing. Testing of an inverter for traction applications using permanent magnet synchronous machine (PMSM) emulator is presented. The emulator test bench consists of two identical front-to-front connected 2-level voltage source converters connected via an auxiliary inductor. Verification of the emulator is carried out in MATLAB/PLECS by comparing simulated phase currents, torque and rotor speeds to an equivalent PMSM drive. A common dc-link is used between the emulator and the inverter under test resulting into circulating common-mode currents. A common-mode choke and controller is used to eliminating common-mode currents. It is shown that the emulator can effectively emulate the PMSM drive with reasonable accuracy.

Electric machines


Model-driven development



Traction motors

Permanent magnet machines

Variable speed drive


Nimananda Sharma

Chalmers, Elektroteknik, Elkraftteknik

Yujing Liu

Chalmers, Elektroteknik, Elkraftteknik

Georgios Mademlis

Chalmers, Elektroteknik, Elkraftteknik

Xiaoliang Huang

Chalmers, Elektroteknik, Elkraftteknik

Proceedings - 2020 International Conference on Electrical Machines, ICEM 2020

1765-1771 9270838
9781728199450 (ISBN)

2020 International Conference on Electrical Machines, ICEM 2020;
Virtual Gothenburg, Sweden,


Rymd- och flygteknik


Annan elektroteknik och elektronik



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