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This is the second part of the two-part paper to illustrate the control system design and multi-energy strategy, it is the key to fulfill the fuel economy target for ISG hybrid bus. Based on a hierarchical structure, the control system is developed with the HCU (hybrid control unit) as the central controller to coordinate the motor, engine and CAN communication protocol. The multi-energy control strategy...
This paper presents a design of regenerative braking system (RBS) for hybrid electric vehicles using hierarchical control structure and method. The hierarchical model is mainly composed of three modules for driver intent identification, energy management and coordinated control based on components control. As a consequence, RBS, a complicated hybrid dynamic system, is successfully decomposed by several...
This paper presented a control strategy for PWM converter in electric vehicle, with a variable structure current controller as the inner-loop and a fuzzy adaptive PI voltage controller as the outer-loop. Based on analysis of mathematical model of system and target of current control, function and algorithm of sliding mode variable structure controller for PWM Converter were presented. A fuzzy adaptive...
In order to make full use of the advantages of hardware-in-the-loop (HIL) simulation and improve the quality of electric vehicle (EV) development, the concept and the development process of HIL simulation were introduced, the present study situation of EV HIL simulation at home and abroad was analyzed. By means of summing up the research achievements and shortages, the direction for further improvement...
A semi-track air-cushion vehicle (STACV) which combines an air-cushion lifting system with a semi-track propulsion system is an efficient solution for heavy-duty vehicles working on soft terrain, such as the vehicles for agricultural, oil industrial and military purposes. Focusing on optimizing fuel economy of the vehicle, five main issues are studied in this paper. Firstly, based on the analyses...
The control problem for a hybrid vehicle powertrain is commonly tackled as an optimal control problem, although this is often used in a general sense as opposed to a strict mathematical definition. The problem may be characterised in many ways depending on the performance objective, the hybrid vehicle model considered, the constraints imposed and the available control actions. However, as a general...
The highly need of flexibility and more robust controllers in areas such as motor controllers, renewable energy, and power electronics have opened the niche for applying and developing a new family of more active controllers such as: fuzzy, linear quadratic, passivity, pulse adjustment, etc. All these controllers are able to work in operations regions rather than at a single operation point and they...
Power-train is a key component of the parallel electrical hybrid vehicle for which can control energy flow of the system. In this paper, according to the basic configuration of parallel electrical hybrid power-train, the control strategy based on limiting work range of engine is discussed. As a load adjusting device, the motor uptake power and maintain battery working on the range of high efficiency...
In this paper, the mathematical model of three-phase four-wire three-level neutral-point-clamped (NPC) voltage source rectifier (VSR) using switching functions is founded and its operating principle analyzed. Then a new nonlinear control law based on Lyapunovpsilas stability theory for the PWM rectifier is presented. With this control law, the converter can be stabilized globally for handling large-signal...
Under the background of the increasingly serious global energy crisis and environmental problems, governments and enterprises around the world have paid more attention to the development of a new generation of sustainable energy. The fuel cell bus has become an ideal choice for new energy vehicles due to its zero emission, high efficiency as well as long endurance. A fuel cell bus consists of various...
Based on BF6M1015CP electronic diesel engine (it is a supercharged, water-cooled engine. It has 6 cylinders and it is for heavy-duty vehicle) and HD4070PR electronic automatic transmission (it covers heavy-duty applications requiring high input horsepower and torque. It contains torque converter module, control module, planetary module and output module. It has 7 forward gears and a power-take -off...
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 on board. Essentially, the MLPS is a special high power DC-DC switching power supply, whose power is usually more than 50 kW. As the load characteristic is variable and complex, there is a great difficulty...
Fuel Cell Electric Vehicle has a very good application foreground for it has some advantages, such as high efficiency and little emission, etc. In order to characterize the structure of hybrid power system for Fuel Cell Electric Vehicle, the project of parallel hybrid power system was brought forward, which consisted of Fuel Cell, NIH battery and DC/DC converter, and besides, the power flow chart...
Based on V-type development method and circuit simulation, an electronic control unit (ECU) of compressed natural gas engine is designed. Circuit simulation is discussed in detail. According to system requirements for Hardware of ECU, ignition drive circuit, signal sampling and processing circuit and power module are simulated in emphases. Based on multi-thread technology, Hardware in loop test system...
DC-DC switch-mode converters recently have been increasingly used in many EV and HEV applications when the power distribution is in the form of multi-converter DC electrical system due to their good specifications. Different control strategies such as sliding mode control and current mode control have been applied to DC-DC converters to improve their robustness, efficiency, and stability. However,...
Controlling an immeasurable state with an indirect control input is a difficult problem faced in traction control of a vehicle. Research on motion control of electric vehicles has progressed considerably, but anti-slip control has not been so sophisticated and practical because of this difficulty. Therefore, this work takes advantage of the features of motors to estimate the maximum friction force...
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