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For the special conditions such as underground, dusty, hard maintenance environment of mine area, ac motor, which overcomes some drawbacks of dc motor, is definitely the best choice for mine locomotive. This paper compares characteristics between dc drive and ac drive, and presents an ac drive system for mine locomotive. The full digital control, including slip frequency control in digital signal...
In this research, automatic navigation control system is developed for agricultural electric power vehicles. Electric power steering (EPS) systems have many advantages over traditional hydraulic power steering systems in engine efficiency and space efficiency. So the electric power vehicle for experiment equips EPS system. Navigation control method, fuzzy control steering and path planning are discussed...
This paper presents a novel direct power controlled dual stator-winding induction generator (DWIG) system. The voltage control mechanism of the DWIG is analyzed, based on which the influence of the control winding instantaneous power on the output dc voltage is disclosed. The strategy of the direct power control (DPC) for the DWIG is proposed. No inner current loops and no PWM modulator block are...
100% low floor light rail vehicle (LFLRV) is favored for its small volume, light weight, user-friendly design and its full low floor convenient for all people. 100% LFLRV adopts the structure of independence wheel, which gets rid of the transmission shaft crossing the vehicle in the traditional vehicle, consequently to low the floor. This structure makes the drive control mode obviously differ from...
In this paper, a novel model reference adaptive control (MRAC) scheme based on neural network (NN) is proposed for servo system tracking control to achieve high-precision position control. This scheme consists of an MRAC controller and an online NN controller in velocity-loop and a traditional PID controller in position-loop. For reducing influence which arose from modeling error, unknown model dynamics,...
The dual stator winding structure (the power winding and compensating winding) is used to improve the dynamic performance of the induction generator. The constant output voltage of the power winding is kept through the input voltage regulation of the compensating winding. The dual stator induction generator system is controlled by a fuzzy controller for improving dynamic response. The modeling and...
Controller area network (CAN) is one of the popular networks with the international standard, and adopted mostly on the vehicle. The application of CAN communication in more and more vehicles had led to requirements that the assignment of message identifiers to communication be standardized for certain application. SAE J1939 was designed to allow electronic devices from different vendors to communicate...
In the conventional motor drive system, as sixswitch inverter topology with DC battery for the 42V HEV, the current and torque ripples become high during start-up and low speed region. In this paper, to overcome these shortcomings, a novel PAM inverter is proposed, which consists of a two-switch buck-boost converter and a four-switch inverter. In addition, as the current and torque ripples are generated...
The communication protocol is important for applying adjustable speed drive (ASD) systems to an industry network. This paper proposes a novel scheme of communication system for the ASD system based on Modbus protocol. The most remarkable advantage of the approach lies in the tradeoff between performance and economic cost for a power converter system. The overall system is built on master-slave structure...
This paper presents a hybrid fuel cell/battery wheelchair modeling and design. In this system, the fuel cell acts as a range extender allowing this component to havea low dynamic. The peaks of power are given by a battery. The control of the fuel cell system and the control of the overall system is presented together with an experimental validation.
Magnetic levitation power supply (MLPS) is an onboard electrical installation for electromagnetic suspension (EMS) type maglev train, which can provide the energy for suspension control systems onboard. The output power capability of magnetic levitation power supply has a significant to stability of levitation control system of EMS-type maglev train. This paper studies the output power index of MLPS...
To meet the demand on precise control of electronic control in diesel engine, study on electronic control of cylinder pressure feedback in common rail diesel engine is made. On the basis of brief analysis for cylinder pressure physical meaning, mechanism and sketch of electronic control based on cylinder pressure feedback is presented, pressure characteristic variable orienting to control is provided,...
With the development of human-beingpsilas civilization, public transportation has achieved great progress, but more attention has to be taken for children, old men, and other people who are not convenient to take public traffic, LFLRV (low floor light rail vehicle) has so many advantages that it is a very good choice in the city for these people. This paper describes the traction system of the first...
In response to typical issues concerning lithium-ion battery systems for HEVs, a cell-control specialized IC and a scheme for the entire circuit mounting the IC (namely, no isolation and a ldquodaisy-chainrdquo communication architecture) were devised. The circuit was configured with the cell-control specialized ICs with 350 nm, BiDMOS, 50 V/3.3 V analog-digital mixed process. But the circuit can...
Induction machines (IM) are widely employed as actuators in electromechanical driven system, and IMpsilas control problems, the demands of which are to realize energy saving and speed regulation, have become more significant than before. Efficiency and power factor are two crucial indices in energy saving control issues, and to realize economical running with remarkable efficiency and high power factor,...
A hardware-in-the loop simulation (HILS) platform based on Matlab/Simulink/dSPACE is developed, which can realtimely adjust the control parameters and measure the different inputs and response, and can carry through the virtual testing by constructing different vehicle surrounding. The yaw-rate feedback is taken as the basic control logic for 4WS vehicle, which is easy to use. Large online real-time...
Chassis control systems have evolved dramatically over the past two decades and their impacts on vehicle dynamics can be usefully separated into the three directions, i.e. lateral, longitudinal and vertical directions. Accordingly, the state survey of chassis control systems can be reviewed in following sub-system areas, i.e. steering, driveline/braking and suspension. The developments within each...
The purpose of the article is to introduce a new DC-DC converter typology, which has the advantages of simple circuit typology with no total device rating penalty, soft-switching implementation without additional devices, simple control and low cost. It is promising for medium and high power applications where high power density, low cost and high reliability power converters are required, such as...
Redundancy structure is widely adopted by motors in aircrafts and special vehicles with rigorous reliability requirements. This paper presents an electrical/mechanical hybrid four-redundancy brushless DC motor (BLDCM) and the corresponding driving control system. High reliability can be achieved by adopting the electrical/mechanical hybrid structure. An engineering prototype is designed and developed...
The quick equalization technology of ultra-capacitor stacks in series can protect ultra-capacitors and make full use of limited capacitance. Ultra-capacitorpsilas high specific power and charging current require a higher equalization speed. Therefore a method related with buck-boost conversion for switched capacitorspsila equalization was developed. The design method for circuit parameters and corresponding...
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