Control Strategy of AC Electrical Dynamometer Module in MTR Traction Motor Comprehensive Intelligent Test System

2020 ◽  
Author(s):  
Yongchao Xie
Keyword(s):  
Control Strategy ◽  
Test System ◽  
Traction Motor

Optimal control of a novel uninterrupted multi-speed transmission for hybrid electric mining trucks

2019 ◽  
Vol 233 (12) ◽  
pp. 3235-3245 ◽  
Author(s):  
Weiwei Yang ◽  
Jiejunyi Liang ◽  
Jue Yang ◽  
Nong Zhang
Keyword(s):  
Dynamic Programming ◽  
Real Time ◽  
Control Strategy ◽  
Dynamic Models ◽  
Fuel Efficiency ◽  
Real Time Control ◽  
Traction Motor ◽  
Time Control ◽  
Power Split ◽  
Shift Strategy

Considering the energy consumption and specific performance requirements of mining trucks, a novel uninterrupted multi-speed transmission is proposed in this paper, which is composed of a power-split device, and a three-speed lay-shaft transmission with a traction motor. The power-split device is adapted to enhance the efficiency of the engine by adjusting the gear ratio continuously. The three-speed lay-shaft transmission is designed based on the efficiency map of traction motor to guarantee the drivability. The combination of the power-split device and three-speed lay-shaft transmission can realize uninterrupted gear shifting with the proposed shift strategy, which benefits from the proposed adjunct function by adequately compensating the torque hole. The detailed dynamic models of the system are built to verify the effectiveness of the proposed shift strategy. To evaluate the maximum fuel efficiency that the proposed uninterrupted multi-speed transmission could achieve, dynamic programming is implemented as the baseline. Due to the “dimension curse” of dynamic programming, a real-time control strategy is designed, which can significantly improve the computing efficiency. The simulation results demonstrate that the proposed uninterrupted multi-speed transmission with dynamic programming and real-time control strategy can improve fuel efficiency by 11.63% and 8.51% compared with conventional automated manual transmission system, respectively.

Research on Switched Reluctance Generator for Off-Grid Variable-Speed Wind Energy Applications

2010 ◽  
Vol 44-47 ◽  
pp. 1672-1676
Author(s):  
Jing Feng Mao ◽  
Guo Qing Wu ◽  
Ai Hua Wu ◽  
Xu Dong Zhang ◽  
Yang Cao ◽  
...  
Keyword(s):  
Wind Energy ◽  
Wind Turbine ◽  
Control Strategy ◽  
Test System ◽  
Variable Speed ◽  
Detailed Model ◽  
Switched Reluctance ◽  
Energy Applications ◽  
Variable Speed Wind Turbine ◽  
Model Control

This paper presents a theoretical analysis and experimental evaluation of the switched reluctance generator (SRG) for off-grid variable-speed wind energy applications. The detailed model, control parameters and operational characteristics of the SRG as well as variable-speed wind turbine are discussed. In order to drive the wind energy conversion system (WECS) to the point of maximum aerodynamic efficiency, a SRG power output feedback control strategy which optimized angle position-current chopping control cooperating PI regulator is proposed. The control strategy is also demonstrated by means of Matlab/Simulink. Moreover, an experimental test system is set up, which a cage induction machine is used to emulate the variable-speed wind turbine. The experimental results validate the proposed control strategy and confirm the SRG performance.

Variable DC-link Control Strategy for Maximum Efficiency of Traction Motor Drives

2021 ◽  
Author(s):  
Paolo Pescetto ◽  
Andres Sierra-Gonzalez ◽  
Elena Trancho ◽  
Gianmario Pellegrino
Keyword(s):  
Control Strategy ◽  
Motor Drives ◽  
Maximum Efficiency ◽  
Traction Motor

Višestepena brza regulacija frekvencije u elektroenergetskim sistemima sa neravnomernom distribucijom inercije

2021 ◽  
Vol XXIII (4) ◽  
pp. 1-7
Author(s):  
Jelena Stojković ◽  
◽  
Predrag Stefanov
Keyword(s):  
Control Strategy ◽  
Frequency Control ◽  
Renewable Energy Sources ◽  
Frequency Stability ◽  
Test System ◽  
Rate Of Change ◽  
Electricity Production ◽  
Rotational Inertia ◽  
Telecommunications Infrastructure ◽  
Local Measurements

Integration of renewable energy sources (RES) is one of the key factors in the fight against climate change and they are becoming to take a larger share in electricity production. The systems with a high penetration of RES have small rotational inertia and are more vulnerable in terms of frequency stability. This paper proposes strategy for multistage fast frequency control (FFC) provided by converter-connected resources. They can quickly change the output active power and provide frequency support immediately after the disturbance during the period before that frequency reaches its nadir. The proposed control strategy uses only local measurements of the rate of change of frequency (RoCoF) and there is no need for complex telecommunications infrastructure. The multistage approach enables dispatched reserve to be proportional to the size of disturbance. RoCoF based FFC provides that more reserves would be dispatched in low-inertia areas that are more sensitive to disturbance and therefore enhance frequency stability. The proposed control strategy is validated on a test system of 3 coherent areas and the simulation results confirm that more reserve is dispatched in low-inertia areas that are more affected by disturbance.

Safe Test System for the Turning Vehicles ESP Control Performances on the Lateral Restricted Vehicle System

2013 ◽  
Vol 694-697 ◽  
pp. 1334-1339
Author(s):  
Jian Zhu Zhao ◽  
Lu Zhang ◽  
Guo Ye Wang ◽  
Yan Chen ◽  
Zhong Fu Zhang
Keyword(s):  
Control Strategy ◽  
Test System ◽  
Stability Control ◽  
Control Test ◽  
Vehicle Dynamic ◽  
Vehicle System ◽  
Test Conditions ◽  
Vehicle Dynamic Simulation ◽  
Driving Stability ◽  
Great Uniformity

Project the lateral restricted vehicle system to establish a safe and efficient vehicle driving stability control test system. Aimed at Chery A3 car, based on Matlab/Simulink, establish the lateral restricted vehicle dynamic simulation system. Used the braking and driving integrated ESP control strategy, separately analyze the ESP control performances of the independent vehicle system and the lateral restricted vehicle system on three test conditions including neutral steering, under steering, over steering. The research results indicate that the ESP control performances of the lateral restricted vehicle system and the independent vehicle system have great uniformity on the three test conditions, provide a basis for the vehicle driving stability control test research.

scholarly journals A Bidirectional Power Charging Control Strategy for Plug-in Hybrid Electric Vehicles

2019 ◽  
Vol 11 (16) ◽  
pp. 4317 ◽  
Author(s):  
Fazel Mohammadi ◽  
Gholam-Abbas Nazri ◽  
Mehrdad Saif
Keyword(s):  
Electric Vehicles ◽  
Control Strategy ◽  
Wind Farm ◽  
Hybrid Electric Vehicles ◽  
Test System ◽  
Frequency Regulation ◽  
Diesel Generator ◽  
Peak Reduction ◽  
Charging Control ◽  
Hybrid Electric

Plug-in Hybrid Electric Vehicles (PHEVs) have the potential of providing frequency regulation due to the adjustment of power charging. Based on the stochastic nature of the daily mileage and the arrival and departure time of Electric Vehicles (EVs), a precise bidirectional charging control strategy of plug-in hybrid electric vehicles by considering the State of Charge (SoC) of the batteries and simultaneous voltage and frequency regulation is presented in this paper. The proposed strategy can control the batteries charge which are connected to the grid, and simultaneously regulate the voltage and frequency of the power grid during the charging time based on the available power when different events occur over a 24-h period. The simulation results prove the validity of the proposed control strategy in coordinating plug-in hybrid electric vehicles aggregations and its significant contribution to the peak reduction, as well as power quality improvement. The case study in this paper consists of detailed models of Distributed Energy Resources (DERs), diesel generator and wind farm, a generic aggregation of EVs with various charging profiles, and different loads. The test system is simulated and analyzed in MATLAB/SIMULINK software.

Research of DC Micro-Grid Photovoltaic Energy Storage System Control Strategy

2013 ◽  
Vol 860-863 ◽  
pp. 2474-2480
Author(s):  
Li Liu ◽  
Yue Chao Wang ◽  
Song Jie Shi ◽  
Chang Liu
Keyword(s):  
Energy Storage ◽  
Control Strategy ◽  
Synthesis Method ◽  
Optical Storage ◽  
Test System ◽  
Control Mode ◽  
Storage Device ◽  
Photovoltaic Energy ◽  
Photovoltaic Array ◽  
Micro Grid

This document focuses on the DC micro-grid photovoltaic energy storage device, the design of energy storage systems are optical storage hybrid power system which composes the photovoltaic array, battery pack, management systems, photovoltaic inverter, load and power grid. According to the characteristics of the battery and the development of the switching device control technology, the charging and discharging control strategy of battery is studied. In this paper, three-phase inverter is based on the space vector control mode that is called SVPWM, after introducing the basic principle and synthesis method of SVPWM, the on-grid and off-grid system working mode control strategy is studied. Finally the control theory develops the inverter used in the optical storage complementary power generation system, and the article builds test platform to test system, verifying the validity of the control strategy.

Superconducting Magnetic Energy Storage Control Strategy for Power System Stability Improvement

2005 ◽  
Vol 4 (1) ◽  
Author(s):  
Antonio Griffo ◽  
Davide Lauria
Keyword(s):  
Energy Storage ◽  
Power System ◽  
Control Strategy ◽  
Transient Stability ◽  
Magnetic Energy ◽  
Relevant Literature ◽  
Test System ◽  
System Stability ◽  
Superconducting Magnetic Energy Storage ◽  
Magnetic Energy Storage

Transient stability is recognized as a critical problem for modern electrical power systems, since the deregulation could involve more and more restricted margins. Continuous improvements in power electronics technology gives the possibility to improve significantly the dynamic behaviour. Recently, a great attention in the relevant literature has been paid to Superconducting Magnetic Energy Storage (SMES) devices, showing their intrinsic ability to improve power transmission capability. In the paper, a control strategy for these devices is derived starting from a Control Lyapunov function, thus determining reference values for SMES active and reactive powers injections, able to counteract the effects of large disturbances. Hence, a new topology of the power conditioning system for interfacing SMES device with a power system is proposed. Finally, a control law based upon quasi-sliding technique is employed for tracking the required active and reactive powers. In the last part of the paper an application is presented, with reference to a test system, allowing to outline the flexibility and the goodness of the proposed control strategy.

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