Visedo’s SRPM motors for buses claim 10% more power, better cooling

Finnish manufacturer Visedo has unveiled a new electric motor design optimized for the e-bus market.

Visedo says its new S-model PowerDRUM has achieved a 10% increase in power output, as well as better cooling. The company has upgraded its entire PowerDRUM line, which includes motors in 4 different sizes, ranging from 50 to 343 kW.

Visedo’s drivetrains are based on synchronous reluctance assisted permanent magnet (SRPM) technology, which the company says combines the benefits of PM and synchronous reluctance technology, and features increased torque capability over a wide speed range.

The supply current to the machine stator windings creates a rotating magnetic field, which in turn rotates the rotor, which contains permanent magnets. The rotation of the rotor is synchronized with the frequency of the power supply current, and the reluctance technology maximizes the pull­out torque of the machine.

Visedo says its SRPM motors offer smaller dimensions, lighter weight and higher efficiency compared to both induction machines and standard permanent magnet motors.

Visedo has PowerDRUM projects underway with Linkker in Finland (powering Helsinki’s first all-electric buses) and Hybricon Bus Systems in Sweden, and recently started a project with Ledgent Technology in Taiwan. Further announcements for Asian markets are expected in coming months.

 

Source: Visedo via Green Car Congress