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Permanent magnet synchronous motor

Railyway Systems Business Domain

Select Products 
Railway Systems

20 Pasir Panjang Road,
#12-25/28 Mapletree Business City,
Singapore 117439 +65 6297 0990 
Permanent Magnet
Synchronous Motor

Enhancing The Value of Cities

Product Overview Contact
product overview


Toshiba started developing the PMSM system in the early 1990s. Utilising data accumulated through R&D and field tests, Toshiba established the PMSM main circuit system technologies for railway cars.

The most strong point of PMSM system is High efficiency. There is no secondary copper loss, decreased primary copper loss, iron loss and others. Overall loss, drastically reduced to less than 50% compared to induction motor. KEY Features KEY benefits

High Efficiency * 1The motor efficiencies were calculated with loss measurement based on IEC
60349-2 at the temperature below 40oC from 8/25/2009 to 9/25/2009 for PMSM.

Energy Savings ** This graph compares the energy consumption measurement result on the following condition.

Trains used:

Service Uptime

C151 PMSM Train Running Mileage

Since the introduction of C151 PMSM prototype train (2 train-sets) in July 2015, C151 PMSM trains (total 6 train-sets) keep to run with no service disputation disruption. Toshiba has developed a totally-enclosed structure to make maintenance operations smarter compared to our conventional Induction Motor (IM) in terms of cost and time. We have succesfully eliminated potential internal contamination, which makes cleaning no longer required through the PMSM's service life. We have also engineered a structure allowing the bearing unit to be replaced without disassembly of the entire motor. You are about to leave Toshiba Asia Pacific website to an external link.

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