Decarbonizing Transit with Inductive Charging
Canada is committed to achieving net zero emissions by 2050, with the transportation sector playing a crucial role. As we approach this deadline, exploring all viable solutions for decarbonizing transit is essential. Inductive charging, or wireless charging, offers a promising alternative solution to conventional charging methods for electric buses. It can also be integrated into a mixed fleet strategy, offering advantages for specific routes or operational needs.
This brief summarizes key takeaways from the Canadian Urban Transit Research & Innovation Consortium (CUTRIC) discussions for the project, Pan Canadian Battery Electric Bus Demonstration and Integration Trial: Inductive and Autonomous Charging (Phase III). The sessions explored inductive charging as a solution for transit agencies where other charging methods may be challenging.
How Inductive Charging Works
Inductive charging wirelessly transfers energy via magnetic fields between a charging mechanism embedded in the ground and a receiver unit on the underside of the bus. This can be done statically, with the bus positioned over the charging mechanism, or dynamically, as the bus moves along a roadway equipped with the charging infrastructure. In both static and dynamic charging, the magnetic field induces an electric current in the receiver, charging the bus's battery. This contactless approach simplifies the charging process and offers a range of additional advantages.
Electric Bus Charging in Canada
Canada is witnessing a growing trend of electric bus adoption, with a total of 5,459 zero emission buses currently in various stages of deployment across the country. Ontario leads in battery electric bus deployment, followed by Quebec, Alberta and British Columbia. Battery electric buses are even being introduced in Newfoundland for the first time.
Currently, there are 597 battery electric bus chargers in different stages of deployment, with pantograph chargers being the most common, followed by plug-in chargers. However, transit agencies are encountering challenges in the electrification process, such as limited availability of buses and parts, high capital and infrastructure costs, underperformance of buses, funding constraints and capacity limitations at transit facilities.
Inductive charging has the potential to address some of these challenges. Its faster charging times and opportunity charging capabilities can reduce downtime and extend operational range, while potentially lower infrastructure costs can ease the financial burden on transit agencies.
Benefits for Transit Agencies
Potential for quicker charging times compared to traditional methods, enabling continuous bus operation and reduced downtime.
Allows buses to be charged at various points along their routes, extending their range and operational flexibility.
Potential for lower infrastructure costs compared to other charging solutions, as inductive charging stations can be integrated into existing infrastructure.
Allows for cleaner and less obtrusive charging infrastructure compared to overhead wires or large charging stations.
Potential for increased bus utilization and optimized route scheduling.
