Affiliations: CCS Graduate School for Green Transportation, KAIST,
Daejeon, Korea | Department of Aerospace Engineering, KAIST, Daejeon, Korea
Abstract: Battery issues like weight, cost, charging time and infrastructure
have been major obstacles to Electric Vehicle (EV) introduction to the market.
As a solution, KAIST introduced the new concept of on-road wireless charging
technology, called OLEV® (On-Line Electric Vehicle). In applying the
technology, efficient power management, especially with Heating, Ventilation
and Air-Conditioning (HVAC) system in electric vehicles remains as yet to be
solved, in view of continuous and efficient energy management especially when
operating on the electrified road. In this paper, unique feature of power
control algorithm of HVAC system for OLEV® is introduced. The main purpose is
to control the amount of power and energy consumed by HVAC system so that it
does not affect any key performances of an electric vehicle in view of driving
distance and speed. Specifically, the algorithm makes sure that HVAC consumes
no more than 20% and 25% of instantaneously available power for
air-conditioning and heating respectively by controlling the output of heating
or cooling power from HVAC system, while maximizing the HVAC performance in
customers' perspective. A proper set of dynamic models and control algorithms
for a HVAC system is developed linked together with OLEV® system operation.
With these models, simulations have been carried out to verify that the
algorithm leads to optimized and improved performance of an OLEV®.
Keywords: OLEV, HVAC, dynamic model, control algorithm, power management
