|Table of Contents|

Charging optimization for electric bus based on time-of-use price(PDF)

长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2013年03期
Page:
81-87
Research Field:
汽车与机械工程
Publishing date:

Info

Title:
Charging optimization for electric bus based on time-of-use price
Author(s):
WANG Dai1;  LI Pan1;  BAO Yu-zhe2;  ZHOU Chen-hao1;  WU Jiang1
1. Institute of Systems Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, China; 2. Zhengzhou Power Supply Bureau, Zhengzhou 450001, Henan, China
Keywords:
automobile engineering;  TOU price;  electric bus;  charging/discharging
PACS:
U469.721; TP13
DOI:
-
Abstract:
Reasonable decision on the number of batteries and optimal charging strategy will reduce the investment and operation cost of electric bus line. Under the constraint of transport requirement, an optimization model was proposed to minimize the charging cost and battery investment cost based on time-of-use(TOU)price. The model considered the influence of battery discharging depth on the cycle life and depicted the relationship between the number of buses, the number of batteries and the status of batteries during each period. Optimal number of batteries and charging strategy could be achieved through the proposed model. Meanwhile, battery loss was reduced. The results show that for a five cars simulation the optimal number of batteries should be 10. Charging cost decreases by 11.7% and the battery life is extended by 9.2% compared with uncoordinated charging. The proposed method can reduce the charging cost of electric buses and extend the battery life under battery swapping modes. The simulation result also illustrates that the optimal number of batteries can be achieved so as to reduce the investment cost. 5 tabs, 2 figs, 15 refs.

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Last Update: 2013-05-30