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This paper investigates the generation capabilities of a switched reluctance machine for possible wind power generation applications. The long-term goal is to conduct Power Hardware-in-the-loop (PHIL) simulation using a dSpace-controlled 1kW switched reluctance generator (SRG) available in the lab. In the proposed PHIL simulations, the SRG is controlled to output a constant DC output voltage, which...
The output voltage of an inverter is often assumed proportional to the drive modulation signal. However, in practice the inverter presents nonlinear characteristics that may significantly affect the output voltage, and this may be critical in the context of sensorless drives and parameter identification. Nowadays, several solutions exist to compensate for the nonlinear behaviour of the inverter. Nevertheless,...
In a plug-in hybrid electric vehicle equipped with an integrated charger, the electric machine and the inverter, which in traction mode are used to propel the vehicle and recover energy during braking, are also used to charge the battery from the grid while the vehicle is at rest. This paper studies the design and performance of a permanent-magnet assisted synchronous reluctance machine (PMaSynRM)...
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...
The use of voltage source inverter (VSI) in high performance drives removes the restriction of the number of motor phases. Due to the reported advantages of multi-phase machines they have become of increasing interest to the industry. This paper provides a Matlab/Simulink built n-phase machine model in terms of physical variables along with the VSI and V/f control scheme that a user can easily set...
Elimination of the electrolytic capacitor in the inverters of motor system driven domestic appliances is desirable, because the electrolytic capacitor increases the appliance volume and has the problem of short lifetime. Two different control methods for an interior permanent magnet synchronous machine (IPMSM) speed control system without an electrolytic capacitor are compared. The performance of...
The paper presents a complete mathematical analysis of a BLDC motor commutation which results in the motor static characteristics torque-speed and efficiency-speed. The motor, having a sinusoidal back emf, is supplied from a DC source via a 6-leg inverter using the 120degON operation. The formulas for the phase currents and voltages are derived. The first harmonic of the phase voltage is determined,...
A new approach to automatic control of excitation parameters for the switched reluctance motor (SRM) is presented. A turn-on and turn-off angles play important roles in developing electromagnetic torque in SRM. The value of excitation angles are usually variable and depend upon the motor speed and other parameters of the inverter that excites the SRM. As the motor speed increases the shape of the...
This paper deals with the identification of a new high power starter-alternator system, using both: a finite element method (FEM) modeling and an experimental vector control. The drive is composed of a synchronous 7-phase claw-pole machine supplied with a low voltage / high current voltage source inverter (VSI). This structure needs specific approaches to plan its electrical and mechanical behaviors...
The paper analyses the inductance saturation effects of an induction motor in order to be considered in the nonlinear control drive technique. The involved inductances are determined through finite element modeling of the induction machine. The impact of coupled field and circuit approach on the derived parameter variation has also been examined. The methodology is suitable for control techniques...
This paper mainly discusses several methods on widening the speed-regulating range of rare earth permanent magnet brushless direct current motor (BLDCM). The simulation of traditional three-phase inverter structure and the three-phase bridge based on Buck chopper is analysis on the speed-regulating range. The calculation formulas of inductance and capacitance in Buck chopper are given. DSP is designed...
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