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Operating single phase induction motors across a wide range of speed and load with high efficiency is still of interest. In the paper at hand the suitability of several different capacitor run single phase induction machines for phase control, integral (half) cycle control or integral switched cycle control is investigated. The induction machine's model's electrical and mechanical parameters are estimated...
According to earlier work and papers by other authors, the main flux path of an induction machine is not only saturated due to the magnetizing current, or in other words ldquothe magnetizing inductance can be modeled as a function of torquerdquo. In addition, at a given magnetizing current, the flux linkage decreases with rising supply frequency. These effects should be considered when using control...
According to several papers, an induction machine's main flux path's saturation state is not only conditioned by the magnetizing current. In the paper at hand the dependency of the magnetization curve on the supply frequency is investigated. Measurements show that the flux linkage decreases with rising supply frequency. This should be considered when incorporating control algorithms based on the main...
According to earlier work and papers by other authors, the main flux path of an induction machine is not only saturated due to the magnetizing current or, in other words, ldquothe magnetizing inductance can be modeled as a function of torquerdquo. In the paper a method is proposed to extend the induction machine's standard fundamental wave model taking into consideration the changes of the main inductance...
According to several papers, the main flux path of an induction machine is saturated not only due to the magnetizing current. Measurements and related parameter estimations show the influence of the torque building current component on the magnetization curves. The paper at hand presents 2D FEM calculations carried out in order to support and possibly verify the experimental investigations by means...
The vector control scheme for induction motors using the rotor flux reference frame is well known. To provide proper torque production, knowledge of the rotor time constant is essential. Many adaptation schemes have been presented using different paradigms. In this paper a scheme for rotor time constant adaptation is applied, which uses the difference between the measured and the calculated reactive...
Operating single phase fed motors across a wide range of speed and load single phase fed motors across a wide range of speed and load with high efficiency is of growing interest. The paper at hand presents an investigation into the efficiency of different low cost variable speed drive concepts (namely phase control, integral (half) cycle control and integral switched cycle control) based on capacitor...
The aim of the constructed emulator system, in association with a mathematical simulation model of an actuator running on a digital-signal-processor-HIL system (Hardware-in-the-Loop system) is to replace a real actuator and its positioning sensors. The emulator is the physical link between the real actuator supply electronics and the mathematical actuator model. From the (electrical) view of the power...
An electrical drive consisting of a pwm-fed, digital-signal-processor controlled dc-motor, of a gearbox and the load is investigated. The gearbox features a high gear transmission ratio and converts the rotation of the dc-motor into a vertical translatory movement. Due to construction insufficiencies the gearbox causes torque disturbances, which influence the vertical acceleration. The underlying...
The conventional model describing the electrical and mechanical properties of a permanent magnet dc-motor drive is extended in order to take into account the oscillations of the induced voltage that are caused by slotting effects, and - as the electrical machine investigated is fed from a PWM-inverter - in order to include the inverter's voltage drop. Furthermore, a method is proposed to estimate...
An extended permanent magnet dc-motor model is set forth including the oscillations of the induced voltage that are caused by slotting effects. The model is used in a hardware in the loop system that easily allows to improve the control strategy of the power split unit in an all-wheel driven automobile. In order to find out which effect causes the ac part of the induced voltage and thus of the current,...
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