The solid-state design eliminates the reduced or lost power experienced by traditional alternators when internal temperatures increase. The HBA’s operating temperature range is -40 °C to 80°C, or -40 °C to 55 °C at full load. The HBA is also at least 25% lighter than traditional alternators, resulting in fuel savings and emissions reductions.

In addition to removing the alternator, it also eliminates the need for V-belts, pulleys, voltage regulator, pulleys, idle tensioners, hydraulic lines and fittings and other moving parts.

We anticipate that transit fleets will only need one HBA for every five alternators and associated parts. The HBA significantly increases vehicle readiness in the yard and cost savings over the life of the bus could be $25,000 or more.

—Chris Collet, Vanner VP, Bus and Hybrid Markets

Roof mounting. Click to enlarge.

The HBA provides full power at curb idle and delivers power that exceeds conventional alternators through 85% of the drive cycle, according to testing performed by Vanner and Gillig engineers. Vanner uses a roof-mount installation for the HBA, unlike the alternator, which is located near the engine, to eliminate any potential for thermal events. Testing of the HBA also indicates fuel savings and reduced stress on the engine, which can lead to longer engine life.

Vanner, a leader in commercial vehicle power management systems since 1977, develops power management solutions for transit and coach buses, ambulances, trucks, mobile office and military vehicles.