100% Hybrid Electrification with Increased Accessory Power

October 14, 2014 by Jeff Shepard

Vanner Incorporated introduced the next-generation in 100% hybrid electrification with the unveiling of their Increased Accessory Power II (IAP II) component system. IAP II is a customizable electric distribution platform that provides power distribution from the hybrid system to accessory components such as electric air conditioning systems, electric air compressors and electric power steering systems. Up to 30kW of continuous export power from the Allison H 40/50 EP Hybrid is made available via IAP II allowing up to 100% electrification for Hybrid Buses and Coaches.

"Full electrification of a hybrid bus is the single most advantageous option a transit authority can realize that will improve fuel economy, reduce emissions and lower maintenance costs," explains Steve Funk, President of Vanner Incorporated. "The durable Allison H 40/50 EP Hybrid already has a proven track record as a reliable sustainability solution. IAP II improves on the hybrid's efficiency by distributing the hybrid power throughout the entire bus. Both Allison and Vanner recognize full electrification is key to making a better hybrid."

Building on the success of IAP I, a water-cooled Vanner Exportable Power Inverter (VEPI) is now included and produces 230-Vac 3-phase for full bus electrification. A Vanner High Voltage Distribution Module (HVDM) acts as a smart electrical grid for the hybrid bus and 80-Series Equalizer with Model Based Battery Monitoring (MBBM) for dynamic charging. IAP II includes either a Single or Dual Hybrid Beltless Alternator for up to 600 amps-at-idle 24-Vdc charging.

"An advantage over a fully electrified hybrid vs. other electric vehicles is that the hybrid is its own electrical generation power plant. It is not dependent on a daily charging cycle to keep it on the road," states Chris Collet, Vanner Vice President, Bus and Hybrid Markets. "An IAP II equipped hybrid bus continues to use the best of both worlds of mechanical and electric efficiencies."