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The field oriented control (FOC) can provide the same performance as is achieved from a separately excited DC motor. However, this technique requires the mechanic sensor to determine correctly the orientation of the rotor flux vector and is very sensitive to the variation of motor parameters, results in an undesirable coupling between the flux and the torque of the machine, and loss of dynamic performance...
The design of Synchronous Reluctance Motor (SynRM) has a lot of variables. There are some difficulties to design proper rotor-flux barrier geometry. It is necessary obtain an optimized geometry to get the satisfactory results of torque ripple, average torque, etc. SynRM is a new motor topology but in electrical railway applications is not working yet. The mature topology in this application is Induction...
The Rotor Flux oriented vector control of induction motor involves the decoupling of input stator current as torque and flux producing components. It gives the performance of induction motor as DC motor. So the induction motor gives high dynamic performance. But it involves complicated calculations and complicated switching techniques. In this paper the vector control of induction motor is implemented...
The aim of this paper is to present the station for electrical motor testing with its potentials. The main part of the station is an electromagnetic emulator of load. The Electromagnetic Load Emulator (ELE) is designed to be an adjustable load of an electric motor. The paper also describes a detailed procedure of design, construction and calibration, as well as the working principle and examples of...
DC motor can be replace by Induction motor by controlling speed of induction motor under different conditions but it required fast dynamic response. The speed of the motor must be maintained in permissible range, under varying load condition in the system. But to compensate the speed of motor it requires prior knowledge of the load characteristics. Although external load applied on the machine and...
The efficiency of induction motor depends on the condition of the motor. Condition monitoring of the induction motor relies on the detection of difference between healthy and faulty motors. The Motor Current Signature Analysis (MCSA) is the most reliable method as it does not require any sensors for its functioning. The major faults like broken rotor bar, eccentricity, stator unbalance and stator...
In this study, a three-phase induction motor drive using field-oriented vector controlled algorithm was designed and implemented. Sensorless speed control was achieved via vector control. The control algorithm was carried out using real-time application. The experimental results showing the operation of the system in continuous and transient regimes are presented with the practical results of the...
This paper presents a rotor flux estimation method for induction motors based on high-order terminal sliding-mode observer. A terminal sliding mode manifold is designed for the observer and a control strategy is applied to stabilize the observer. A high-order sliding-mode mechanism is utilized in the observer controller to generate a smooth control signal, which can be directly used for the estimation...
Paper deals with design of traction drive for small electric car where its primary energy source is realized by two hydrogen cells with nominal power 2 × 1,2 kW. Main attention is paid to find appropriate torque-velocity, resp. power-velocity dependences related to wheel of the small electric car. According to these characteristics an appropriate gear ratio is calculated. Finally, an appropriate traction...
A strong jerk which can cause passengers discomfort occurs when electric elevator starts and stops. If uncontrolled, the jerk have influence on the electrical and mechanical subsystem performance and reduce the system life expectance. Modern drives have ability to control speed, so we can indirectly control the jerk. This paper describes the control of real gear-less electric elevator drive with vector-controlled...
In the induction motor indirect vector control system, because of its physical limits such as maximum current and voltage, the change of speed command or load would eventually cause the integral windup phenomenon and system performance degradation. A new anti-windup speed controller is proposed by combining the conditional integration and conditioning technique anti-windup. The conditioning technique...
As one kind of regenerative energy, as well as a part of smart grid, wind power has become a hot topic in many countries all over the world. Due to lack of wind farm circumstance, it is difficult to carry out an actual experiment on wind turbine in the laboratory. It is necessary to build a simulative system of wind turbine in the lab without any real wind farm surroundings so that we can not only...
This paper proposes a new closed loop speed control of an induction motor fed by a high performance Z-source inverter (ZSI), the speed control is based on V/F control and indirect field-oriented control (IFOC) strategies. The indirect field-oriented control based on PWM voltage modulation with voltage decoupling compensation is used to insert the shoot-through state within the switching signals. A...
This paper presents simulation studies on the optimal energy control of an inverter-fed three-phase induction motor (1 hp). An overview of various controllers: loss model controller, search controller and their hybridization are given. Induction motor parameter variations due to temperature rise and core saturation are considered when loss models are derived. Mine hoist drive of a mineral industry...
This paper will present a test bench to verify the reliability of new prototypes of inverter for electric motor in the hybrid vehicle. These inverters must be tested in the same conditions as in real vehicle. A 22 kW induction motor has been used, coupled with a DC motor in order to impose the load torque. We have implemented various mission profiles ( European ARTEMIS cycles) of load torque on the...
This paper is concerned with vector control of permanent magnet synchronous motor (PMSM). Recent research has indicated that PMSM could become a serious competitor to the induction motor (IM) for high performance servo applications. Mathematical model of a PMSM is developed with the help of Park and Clarke transformations. The concept of vector control is applied to PMSM to obtain linear dynamics...
In this study, six kinds of the drivetrain systems of electric motor drives for EVs are discussed. Furthermore, the requirements of EVs on electric motor drives are presented. The comparative investigation on the efficiency, weight, cost, cooling, maximum speed, and fault-tolerance, safety, and reliability is carried out for switched reluctance motor, induction motor, permanent magnet blushless DC...
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