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.
In this paper, an overall power control strategy is proposed for control of a fixed-pitch small-scale wind energy conversion system operating at both underrated and overrated wind speeds. At underrated wind speeds, the dynamical behavior of the rotor is considered, and the optimal reference torque is generated without the need of wind speed sensors through a robust variable structure observer with...
This paper proposes a distributed speed control with improved power sharing capability for multi-three phase synchronous machines. This control technique allows the speed to be precisely regulated during power sharing transients among different drives. The proposed regulator is able to control the time constant of the current within the dq0 reference frame to a step input variation. If compared to...
Maximum Torque Per Ampere (MTPA) tracking techniques for the control of Interior Permanent Magnet Synchronous Machines (IPMSMs) and Synchronous Reluctance Machine (SynRMs) drives were introduced in the last decade, with the aim of overcoming the dependence on motor parameter knowledge accuracy. In fact, uncertainty due to identification errors, magnetic saturation or temperature variation results...
The on-going electrification transportation system revolution has already started and the continuous evolution of power electronics allows new and more reliable system layouts and control strategies to be investigated. Mainly, this revolution is driven by increased reliability levels. Since multi-three phase motors are fault tolerant by definition, they are a very good candidate for more reliable...
In this paper, a sliding mode speed control scheme associated with an original fuzzy disturbance observer (FDO) is presented for the permanent-magnet synchronous motor (PMSM) control system with various disturbances. In order to overcome the main drawback of traditional sliding mode control, that is, large control effort and chattering, and meanwhile, enhance the robustness of the system, a FDO with...
Implementation of a Fuzzy Logic speed controller for a Permanent Magnet DC (PMDC) motor using a low-cost Arduino interfaced with a standard xPC Target MATLAB environment is demonstrated. The Arduino solution is acceptable at kHz sampling frequencies. The study of speed control of PMDC motor based on Arduino and L298N H-Bridge using an artificial intelligence control method, such as Fuzzy PID with...
This paper deals with an underwater compressed air energy storage system. The power conversion chain is composed of a PWM-VSI-PMSM driving an underwater compression system. The excess energy is stored in form of compressed air in a tank located on the seabed. A multi-physic dynamical model of the power conversion chain is established. Considering conversion efficiency performances and system operating...
The objective of the paper is to identify a power prediction method suitable to horizontal axis hydrokinetic turbines using simulation, laboratory testing and operational data collected from literature. An open source framework for the simulation and design is used in order to determine the optimal design of the blade geometry for small rotor models which are then tested in a dedicated experimental...
We present an Adaptive Cruise Control (ACC) architecture which is focused on solving repetitive switching issues between two modes of ACC, speed control and distance control. A cascaded controller structure has been used. First controller (upper) includes two modes: a speed controller (PI) and a distance controller (time-gap). Outputs of these controllers are acceleration reference signals. The second...
The rapid advancements in induction motor drives has led to the development of robust non-linear controller such as Fuzzy Logic Controller (FLC). The proportional integral or derivative controllers (PI, PID, and PD) have been in use for induction motor drives for past decades as speed and current controller's. However, these controllers are fixed to motor parameter changes which results in decrease...
Compressed-air systems account for a notable share of the industrial electricity consumption. At the same time, a significant potential to improve the energy efficiency of compressed-air generation has been recognized. Variable-speed drives provide an efficient and flexible way to regulate the output of a screw compressor and to match the typically intermittent demand of compressed air. In addition...
The paper presents a prototype of a high-speed Switched Reluctance Motor designed for power tools and results of simulations of the control system of this motor. The basic aims of the simulation was to determine the efficient control of the motor phases and to determine the electromagnetic torque ripple. Simulations have shown the necessity of modifying the drive control algorithm to reduce the amount...
The article presents simulation research concerning speed control of two mass system with elastic joint and backlash utilizing the ADRC method. The model of the plant and the structure of the ADRC speed controller are presented together with mathematical formulas allowing to determine the observer and controller gains. Proper quality indicator of control process is defined and also sample scenario...
The follow-up control system has the feature of input signal random changing. On the basis of motor driving technology, the system can follow the change of the input signal. Permanent Magnet Synchronous Motor (PMSM) has small output torque ripple feature. Thus it has broad application prospect in the follow-up control system. The vector control of PMSM has coupling feature, reducing the speed dynamic...
In this paper, a nonlinear speed control scheme based on the sliding mode control (SMC) for variable speed operations of diesel engine-generator (EG) sets is proposed. At first, the mathematical model representing the relation among engine speed, governor current and mechanical torque is derived. Then, the SMC-based speed controller for EG is designed. The proposed method can provide the fast reference...
This paper proposes the use of an active yaw system to protect small and medium wind turbines in the high wind zone from overloading. The active yaw system turns the rotor partially out of the wind to decrease the turbine power. The dependency of the power on the yaw angle is modeled by the third power of the cosine of the yaw angle. A proper controller is configured based on on-off control of the...
Brushless DC (BLDC) motors have been widely used in industry. However, one of the main drawbacks of using BLDC motors is the undesirable torque ripple. The torque ripple can cause mechanical vibration, acoustic noise and bearing damage that reduces the lifetime of the machine. This paper proposes a simple repetitive control scheme to attenuate torque ripple of BLDC motors. In this method, the ripple...
The growth of electrification transportation systems is an opportunity for delving into new feasible solutions for more reliable and fault tolerant arrangements. So far, many investigations distant from the market have been carried out. Most of the works are looking at new control strategies adding extra components increasing manufacturing efforts and costs. Considering a nine phase synchronous multi-three...
For the low precision and response rate of permanent magnetic synchronous motor (PMSM) speed control system in the presence of load disturbance. A backstepping control method based on terminal sliding mode load observer was proposed. Firstly, the non-singular terminal sliding mode load observer which can make the observation error converge in finite time and compensating the controller with estimation...
In this paper, predictive speed control (PSC) of interior permanent magnet sychonous motor (IPMSM) which is based on finite control set model predictive control (FCS-MPC) is investigated. The predictive speed controller with a cascade-free structure has a excellent dynamic performance. A prediction model with speed compensation is used to predict the future states of IPMSM. Then a cost function with...
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.