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Nowadays, with the development of More-Electric/All-Electric aircraft and hybrid/pure electric vehicles, the high reliability of motor servo system is required. This paper presents a little magnetically coupled structure dual three-phase permanent-magnet synchronous machines (PMSMs). Considering the mutual inductance between two sets of windings, a linearized model for a kind of dual three-phase PMSMs...
Optimal control in switched reluctance motor drive form the meaning of energy-efficiency and torque ripple reduction is presented in the article. Solutions of control problems, as in the opposite to many others publications — rely on the reference model equations. Model formulas are introduced focusing on its unique aspects — non-linear approximations in the form of cosine and exponential functions...
In interior permanent magnet (IPM) machines, dq-axis coordinate system is usually employed to analysis the machine. In commonly, the d-axis is coincided with the axis of pole. However, dq-axis armature reaction will not only affect the amplitude of the PM flux linkage, but also make dq-axis offset from the position under no load condition. These will lead errors for the traditional dq-axis coordinate...
In this paper, the phenomenon of magnetic saturation is taken into consideration both in control strategy and the model of permanent magnet synchronous motor (PMSM). What's more, the internal model control (IMC) method is applied to PMSM current control. With this method, compensation of magnetic saturation and current control can be achieved simultaneously. Based on the simulation and experimental...
Because traditional direct torque control (DTC) has unfixed switching frequency and ripple of torque and flux, deadbeat direct torque and flux control (DB-DTFC) of interior permanent magnet synchronous motor (IPMSM) is studied. At first, DB-DTFC based on IPMSM mathematical model is deduced. The calculated proper voltage vector can make reference torque and stator flux during one sampling period. But,...
In this paper the analysis of possible implementations of single node recursions in Adaptive Neuro Fuzzy Controller has been made. By single node recursions we mean using as additional input signal for certain nodes being functions of this nodes existing signals from previous algorithm iterations. Papers presents ANFC structure and possible recursions implementations. Theoretical considerations are...
This paper presents an improved dynamic model with incorporating the saturation effects for an induction motor (IM). The improved model is simulated with MAT-LAB/SIMULINK software for transient response in terms of electromagnetic torque, rotor speed and stator current at no-load and on-load. The obtained simulated results provide a clear evidence that the conventional unsaturated model fails to predict...
This paper analyzes the dynamic characteristics of interior permanent magnet synchronous motor (IPMSM), taking in to account the outer disturbance to a motor system. Based on the analyzed results from electromagnetic field characteristic analysis, the equivalent circuit parameters are derived, and the modeling of both IPMSM and controller system is also performed to predict its operating characteristics...
This paper presents a simplified model of an induction machine with broken rotor bars. The model is founded on the fact that broken bars cause asymmetries in the normally homogeneous cage's resistance and inductance. Thus, the rotor becomes pseudo-salient. This effect could be best comprised through the rotor time constants that differ in the orthogonal axes of a rotor reference frame. A method for...
This paper presented a novel Proportional Integrator Current Chopping Control(PICCC) based on Switched Reluctance Generator(SRG). The fundamental principle of the PICCC is based on the minimization of torque ripple of the SRG. The excitation parameters for the SRG system operates at sufficiently high speed that it operates in the single pulse mode. In this paper PICCC based SRG modeled are simulated...
A novel mathematic model for a dual three-phase permanent magnet synchronous machine(pmsm) was proposed. A set of equivalent three-phase windings was built based on same magnetomotive force and power. Then it can substitute the old dual three-phase pmsm equivalently after a winding transformation. With the mathematical model of the three-phase pmsm in the rotary reference frame, the model of a dual...
This paper presents a PSCAD based simulation model for a grid-connected Switch Reluctance Machine (SRM), which drives a fly-wheel. The system can be used as an effective means to improve power quality issues, such as LVRT, voltage sags, sudden load demands, etc., that encountered in typical power networks. The proposed PSCAD model consists of two separate modules- one for the SRM and the other for...
The subject of this paper is an alternative converter for switched reluctance generators (SRG) and its applications. The performance of the conventional half-bridge converter is compared with the performance of this alternative one. In both cases the machine is excited by a rectified DC link. Mathematical model and simulation results are presented. Both the power converters topologies implemented...
This paper presents an approach to realize an equivalent hardware representation of PM synchronous machines through a physics-based machine model for hardware-in-the-loop simulation of PWM drives. The equivalent hardware representation of the machine is achieved using a controllable load. The load current is controlled to be the same as the currents obtained over the physics-based model of the machine...
Electric parameters of interior permanent magnet (PM) synchronous machines have a non linear characteristic due to saturation effects. Thus, d-q axes inductances are not constant, but they vary depending on the load conditions and the current phase angle. Generally, this kind of machine is characterized by a cross-magnetization effect between axes so that an ideal uncoupled d-q model is not suitable...
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