Constructing Economic Hybrid Truck in Advisor 3.2"

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Discussion Overview

The discussion revolves around constructing an economic hybrid truck using the ADVISOR 3.2 simulation program. Participants are exploring the integration of ultra-capacitors and batteries as dual energy storage systems within the simulation framework.

Discussion Character

  • Technical explanation
  • Exploratory
  • Homework-related

Main Points Raised

  • One participant expresses difficulty in selecting a second energy storage option for ultra-capacitors in ADVISOR 3.2.
  • Another participant, also working on a thesis, requests access to the model to understand the shared challenges better.
  • A detailed explanation is provided regarding the default battery model in ADVISOR, which operates based on power requests and cannot accommodate a hybrid battery/ultra-capacitor system without modifications.
  • It is suggested that the energy storage model can be replaced with a more complex model that allows for a combination of battery and ultra-capacitor, including a local control strategy to manage power demand.
  • The benefits of using a hybrid energy storage system are discussed, including improved fuel economy and battery performance.
  • Participants mention the possibility of optimizing the control strategy for the battery/ultra-capacitor system before physical implementation.

Areas of Agreement / Disagreement

Participants have not reached a consensus on the best approach to model the dual energy storage system in ADVISOR 3.2, and multiple viewpoints on the implementation and challenges remain present.

Contextual Notes

The discussion highlights limitations in the default battery model and the need for a more complex approach to accurately simulate a hybrid energy storage system. Specific details on the control strategy and system integration are mentioned but not fully resolved.

droopdog
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hey,

I hope i post this in the right section of the forum.
I'm working on my thesis and i need to construct an economic hyrbid truck.
The program I'm using for that is advisor 3.2, it is a program that simulates the truck.

My problem is that i need to add ultra-capacitors and batterys. that means i need two energy storages. i know its possible in advisor but i can't get the second energy storage selected. (see picture(the picture in the 2004 version, khave version 3.2)

Is there a way to select the second energy storage? or an other way to add ultra-Capacitors and batterys?

I hope someone can help me.

DD
 

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No1?
 


hey, DroopDog

I'm working to on my thesis and i need to modeling a Electric Vehicle.

Can you send me your model. I need understand the same problem you are!


Can help me.

Minux
 


hi

The default battery model in ADVISOR operates by
requesting a specific amount of power from the battery as
decided by the vehicle control strategy. Depending on the
amount of power that the battery is able to supply, the
battery module will send out the power available from
the battery to the other subsystems. Due to the hybrid
backward/forward simulation method of ADVISOR, the
amount of power that the batteries are able and required to
supply in a given time step is calculated in a single
iteration. From this value, the battery model calculates the
battery variables like current, voltage, and the battery temperature.
However, a hybrid battery/ultracapacitor energy storage
system cannot be modeled within ADVISOR using the
above default battery model. Here, we have to replace the
energy storage model with a more complex model.
Fortunately, the subsystem model in ADVISOR can be
altered as long as the types of inputs and outputs to the rest
of the vehicle are not altered. In our simulation, we
replaced the battery model by a model of a combination of
a battery and an ultra-capacitor connected to a local
control strategy unit that splits the power demand between
the battery and the ultra-capacitor. Detailed information
about the control strategy is available in [20]. The block
diagram representation of the system is shown in Fig. 4.
The use of the model described gives the user a way to
quickly and easily simulate the battery/ultra-capacitor
subsystem in a vehicle environment. It allows the user to
observe the benefit of using the ultra-capacitor on the fuel
economy of the vehicle as well as the benefit to the
battery by making the battery state of charge more even
and by reducing the peaks of the battery current that the
battery has to accept. It also allows the user to validate
the system whether it operates as efficiently if the battery
size were reduced. Finally, the user can optimize the
battery/ultra-capacitor control strategy (in other words,
how the power demand will be split) without having to
think about the complexities of designing the power
electronics to make this control system feasible. In
addition, the system can be optimized before any system
is built and the system cost and possible savings can be
easily calculated at the early design stage. Once the control
strategy is optimized, the actual dc/dc converter with the
required control strategies can be integrated into the
simulation using Saber or Ansoft Simplorer software [20].[PLAIN]http://rapidbaz.liz.ir/files/matlab_advisor_UC.gif

http://www-personal.engin.umd.umich.edu/~chrismi/publications/2007_95_4_IEEE_Proc_Modeling_HEV.PDF"
 
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