PhD Thesis - Cranfield University

Chapter 5
5.2 Adaptation of hierarchical management concepts to Power and
Energy Management
With similarities to ideas found in hierarchical management methodology, the concept of a
modular Power and Energy Management System (PEMS) structure presents a novel method
to approach and describe electric vehicle power and energy management. The framework
itself lends this multidisciplinary problem to be approached and in a systematic breadth
before depth manner. As there are several processes involved in a power and energy
management system, ranging from long-term decisions of energy expenditure to very high-
speed control of the power electronics, the modular structure facilitates each major part of
the process to be addressed independently and finally consolidated to form a complete
system.
Recalling the hierarchical management model of Figure 5.1 some overlap in concepts can be
extracted to produce a similar model specifically for the application of power and energy
management. Figure 5.3 illustrates the adaptation of the classical hierarchical management
model
Lower
Level
Middle
Level
Top Level
1
2 2
3 3 3 3
Organisation Managament Structure
STRATEGY
[Strategic Planning]
POLICY
[Action Planning]
131
PROCESS
[Execution]
TIME
Energy Management
Power Management
Power
Electronics
Power and Energy Managament
Structure
Figure 5.3 Analogy betweena hierarchical management model and a Power and Energy management structure