The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Most of commercial Hybrid Electric Vehicle (HEV)used single motor and transmission gears coupled to the wheels. This system leads to the transmission losses and reduce the efficiency and reliability of the motor. Therefore, in-wheel direct drive mechanism is introduced to overcome this problem. In-wheel direct drive eliminates the mechanical transmission, differential gears and drive belts. Thus,...
Numerous researches about hybrid electrical vehicles (HEV) deal with topologies, technologies, sizing and control. These aspects allows to reduce transportation cost and environmental impacts. The paper focuses on the modeling of the electrical motor of the HEV in a global sizing context, taking into account: the hybrid system, the driving cycle and an optimal energy management. In the paper, the...
A hybrid electric vehicle (HEV) composed of an internal combustion engine (ICE) and a permanent magnet synchronous machine (PMSM) is considered in this paper. Batteries supply power to the PMSM. Referring to previous studies, other than delivering driving forces, PMSM can be exploited as an "active flywheel" and compensate the torque ripples generated by the ICE. These ripples are thus delivered...
This paper proposes a simulation model of an adaptive optimal control strategy for the traction drive of the hybrid electric vehicle. The control unit has to ensure the stability of the power network at different operating conditions. Moreover, the optimal design of the controller is required for the power management in order to reduce the energy losses during acceleration and braking processes. The...
A parallel type HEV has a power transfer device that is constructed by clutches and the device which is located between engine flywheel and electric traction motor is called 'Engine Clutch' When a traction motor of could not generate power to move, the HEV must launch only by engine power. In this situation the slip speed control and transmitted torque control are very important. In this study control...
The electromagnetic torque of permanent magnet synchronous motor (PMSM) affects the power distribution precision in the electro-mechanical transmission (EMT). This paper proposes a torque observers for PMSM. Based on the mathematic model of the motor, command torque and the measured rotor speed, we can observe the actual torque precisely, moreover, the power of electric path is more accurate. The...
In this paper, a novel method is presented to improve the torque density of pole-splitting permanent-magnet vernier machines (PSPMV), which has been proposed to meet the demands of hybrid electric vehicle (HEV) drive system. The interspace between the flux-modulation poles (FMP) deserves to be exploited for producing extra torque by embedding additional windings. Non-overlapping windings are adopted...
A good hybrid electric vehicle control strategy can make the predetermined performance of hybrid vehicles to reach the optimal value of good, or else the good fuel saving effect is unable to obtain, so paper analyzed the demand torque and torque distribution of the hybrid electric vehicle at first, then designed a logic threshold control strategy of vehicles, and determined the control parameters...
In this paper, control strategy of a plug-in 4 wheel drive car is researched. According to torque request of the car, the steady work state is classified into 10 modes, which consists of 7 drive modes and 3 brake modes. Besides, torque distribution strategy among the power components which realizes basic energy management and torque coordination control which aims at reducing shock extent when mode...
This paper presents a method for reducing a motor torque ripple resulting from a motor phase current sensor offset error for motor drive applications such as a hybrid electric vehicle. The proposed method estimates the motor phase current sensor offset error on the basis of the direct voltage value included in the voltage source inverter output voltage reference value calculated by a discrete Fourier...
Hybrid electric vehicles (HEV) are in greater demand these days because of the increase in fuel price and environmental effects of burning fuel. Hence it is important to understand the behavior of the complete electric power train to meet the greater performance expectation from the HEV. In this paper the modeling of the entire electric power train of the HEV that includes an E-motor which is selected...
Due to the torque fluctuation in the mode transition caused by the different response speed of motor and engine, a novel torque coordinated control strategy is proposed in this paper. First, a simplified model of parallel hybrid electric vehicle(PHEV) is constructed. Then a coordinated control method based on the sliding mode control is studied. In order to improve the control performance, the fuzzy...
For hybrid electric vehicles (HEVs), fuel economy which is a significant performance index strongly depends on the power management strategy. In this paper, a new nonlinear MPC strategy is proposed to improve the fuel economy of a plug-in parallel hybrid electric vehicle (HEV). With the preview of the traffic and the battery state of charge (SoC) as well as all the physical constraints of the system,...
This paper investigates energy management strategies for a power split hybrid electric transmissions using a fuzzy design method. Hybrid Electric Vehicles (HEV) is one of the most promising research topics for developing efficient and environmentally-friendly transportation solutions. A power split hybrid combines the advantages of both series and parallel hybrid configurations by providing a higher...
New energy management strategies for hybrid electric vehicles (HEV) play an important role on HEV's future. In order to achieve high performances, less fuel consumption and pollution, and higher efficiency, modern strategies should be employed. Fuzzy approach is one of the most popular and powerful techniques in energy management and optimization which are developed for HEVs. On the other hand, separated-axle...
The control objective of minimization of the fuel consumption and exhaust emission in hybrid electric vehicle (HEV) has generally been achieved by a supervisory controller. The drivability and NVH of HEV especially during mode changes, on the other hand, have drawn significant attention in recent years. In this paper, for the purpose of control simulation, a hybrid drivetrain model including a slipping...
The energy management problem of a hybrid electric vehicle (HEV) is a non-linear and mixed integer optimization problem. The problem can be solved with Dynamic Programming (DP), but the algorithm requires the problem to be gridded in time, states and control signals. To ensure a high accuracy of the solution the grid must be dense, meaning that the cost-to-go can require several megabytes of memory...
Power optimal control of plug-in hybrid electric vehicles (PHEVs) is a considerable issue due to the promising technology of PHEVs comparing with the other hybrid electric vehicles (HEVs). A case study that focuses on the power-assist operation by the internal combustion engine in the plug-in hybrid electric vehicle (PHEV) system is investigated. A formulation for the fuel economy optimal control...
A proposal for a two-stage bidirectional electric drive for hybrid electric vehicle is presented in this paper. The system comprises a synchronous PM electrical machine (EM) directly connected to a Diesel internal combustion engine. The EM is fed by a three-level active neutral point clamped (ANPC) inverter connected to a bi-directional multi-phase interleaved DC/DC converter interfacing the high...
This paper proposes a design of outer-rotor field-excitation flux switching motor(FEFSM) with a topology of 12-slot and 10-pole configuration(12/10) for electric vehicle as a low-cost of non-Permanent Magnet (PM) machine for HEV drives. Design study, performance analysis of field-excitation flux switching machine with 35H210 earth magnet for electric vehicle drive applicationsis done. The stator of...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.