scholarly journals The Local Ordered Charging Strategy of Electric Vehicles Based on Energy Routers under Three-Phase Balance of Residential Fields

2021 ◽  
Vol 12 (1) ◽  
pp. 63
Author(s):  
Hui Gao ◽  
Lutong Yang ◽  
Haowei Duan
Keyword(s):  
Electric Vehicles ◽  
Control Method ◽  
Balance Control ◽  
Utilization Efficiency ◽  
Utilization Rate ◽  
Residential Areas ◽  
Distribution Transformer ◽  
Three Phase ◽  
Phase Balance ◽  
Charging Strategy

With the popularization of electric private cars and the increase of charging facilities in residential areas, disorderly charging will affect the power supply efficiency of their distribution transformers and the quality of electricity used by users in residential areas. In severe cases, it may even cause vibration of the power grid, causing serious three-phase imbalance problems such as single-phase burnout of transformers or insulation breakdown of household appliances. This paper analyzes the influencing factors of the unbalanced operation of each phase of the distribution transformer and the electrical load characteristics of typical residential areas. Based on the photovoltaic output of the station area, the charging and discharging capacity of the energy storage system, and the orderly charging plan of residential electric vehicles, a local orderly charging strategy for electric vehicles based on energy routers under the three-phase balance of the residential area is proposed. This strategy can realize the three-phase balance control of the distribution transformer. The effectiveness of the method is verified by a typical scenario example. The control method is changed to minimize the three-phase imbalance in residential areas and improve the low utilization rate of the distribution network and the comprehensive utilization efficiency of adjustable resources in residential areas.

Model predictive torque control of a six-phase PM synchronous hub motor with auxiliary voltage vectors

2020 ◽  
pp. 1-17
Author(s):  
Hao Xu ◽  
Long Chen ◽  
Xiaodong Sun
Keyword(s):  
Permanent Magnet ◽  
Electric Vehicles ◽  
Control Method ◽  
Research Direction ◽  
Synchronous Motor ◽  
Torque Control ◽  
Experimental Results ◽  
Vector Model ◽  
Dynamic State ◽  
Three Phase

Permanent magnet synchronous hub motors (PMSHMs) have been gradually introduced into the applications of electric vehicles. In order to output more torque, many researchers turned their research direction to six-phase motors. Because it is composed of two sets of three-phase windings, there will be interference between the windings, affecting the performance of the motor. In order to improve the steady and dynamic-state performance of permanent magnet six phase synchronous motor, a predictive torque control method based on multi vector model is proposed in this paper. Finally, experimental results show the effectiveness of this method.

scholarly journals Ordered Electric Vehicles Charging Scheduling Algorithm Based on Bidding in Residential Area

Information ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 49
Author(s):  
Xiao Cheng ◽  
Jinma Sheng ◽  
Xiuting Rong ◽  
Hui Zhang ◽  
Lei Feng ◽  
...  
Keyword(s):  
Electric Vehicle ◽  
Electric Vehicles ◽  
Dynamic Scheduling ◽  
Scheduling Algorithm ◽  
Utilization Efficiency ◽  
Residential Areas ◽  
Allocation Policy ◽  
Electric Vehicle Charging ◽  
Vehicle Charging ◽  
Priority Needs

With the rise of electric vehicles, the key of electric vehicle charging is how to charge them in residential areas and other closed environments. Addressing this problem is extremely important for avoiding adverse effects on the load and stability of the neighboring grids where multi-user centralized charging takes place. Therefore, we propose a charging dynamic scheduling algorithm based on user bidding. First, we determine the user charging priority according to bidding. Then, we design a resource allocation policy based on game theory, which could assign charge slots for users. Due to users leaving and urgent user needs, we found an alternate principle that can improve the flexibility slot utilization of charging. Simulation results show that the algorithm could meet the priority needs of users with higher charging prices and timely responses to requests. Meanwhile, this algorithm can ensure orderly electric vehicle charging, improve power utilization efficiency, and ease pressure on grid loads.

The Control Strategy Study on Combined Mechanical and Electrical Braking of 8 x 8 Vehicles Driven by Wheel Hub Motor

2014 ◽  
Vol 898 ◽  
pp. 578-581
Author(s):  
Yu Lin Yan ◽  
Jia Qi Li ◽  
Zi Li Liao ◽  
Chun Guang Liu
Keyword(s):  
Fuzzy Control ◽  
Electric Vehicles ◽  
Electric Drive ◽  
Control Strategy ◽  
Control Method ◽  
Energy Utilization ◽  
Brake System ◽  
Utilization Rate ◽  
Strategy Study

In order to recycle part of the brake energy in the driving hub motor of the 8X8 electric vehicles. And the energy utilization rate of electric drive vehicles should be increased, the wear of mechanical brake system should be reduced. A fuzzy control method is established for mechanical and electrical joint brake. It can be used to establish a principle of the distribution of brake. Through the simulation on MATLAB platform, it shows that this control method is efficient in improvement of brake ability, distribution of brake distribution, and the energy recycling.

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