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In this paper, Solar powered Single-Phase Capacitor Start Induction motor for water pump application is discussed. Output of solar panel is connected to quasi Z Source Inverter (qZSI). Three modules of qZSI are connected in cascade to give seven level output voltage. Single phase motor is powered with cascaded qZSI to obtain the improved performance due to multilevel inverter. As the power generated...
Cascaded Multi-level inverter for synchronization of power generated from PV system to utility grid is reported in this paper. Inverters are prone to several types of faults e.g. switch failure or dc link capacitor failure. Failure mode analysis of cascaded H-Bridge is widely discussed in the literature. Various methods for post-fault operation with reduced capacity (due to module failure) but with...
In this paper, Active and Reactive power management with the utility grid is achieved by integrating 7-level quasi Impedance Source Inverter (qZSI) with Thyristor based elements (Thyristor Switched Capacitor (TSC) and Thyristor Switched Reactor (TSR)). Major portion of the reactive power is managed by the thyristor based elements and the remaining reactive power is managed by the cascaded qZSI. The...
In this paper, a new sliding mode observer is developed for the indirect rotor flux oriented control (IRFOC) of a Five-phase Induction motor drive. Numerous observer structures for Five-phase induction motor drive is presented in the literature with acceptable performances. However, the objective of this work is to develop and test another family of observers based on the sliding mode approach. This...
The complexity of power systems and the change of demand load at the consumer make it necessary to control the voltage to avoid any unnecessary voltage drop beyond the limits allowed within the international standards and achieve optimum energy efficiency. This paper introduces a simple method that can regulate the voltage of a system without the sophisticated electronic devices. The method that controls...
This paper deals with the sensorless vector controlled five-phase permanent magnet synchronous motor (PMSM) drive based on a sliding mode observer (SMO). The observer is designed considering the back electromotive force (EMF) of five-phase permanent magnet synchronous motor. The SMO structure and design are illustrated. Stability of the proposed observer is demonstrated using Lyapunov stability criteria...
On behalf of the organizing committee, it is our pleasure to welcome all the delegates, representatives of various universities, research institutes, industries and participants from all around the world to the First Workshop on Smart Grid and Renewable Energy (SGRE2015), 22–23 March 2015 in Doha, Qatar.
In this paper a generalized multi-phase space vector theory is considered for developing the space vector modulation of a three-phase to six-phase AC to AC converter. The modulation is based on the control of the voltage vectors in the first d-q plane, while imposing the remaining voltage vectors in the second and the third planes (x-y, 0+–0−), being zero. The duty cycles of the bidirectional switches...
In this paper space vector model of a fifteen-phase voltage source inverter (VSI) is presented. The space vector Pulse Width Modulation (SVPWM) of a fifteen-phase voltage source inverter (VSI) with the aim of producing sinusoidal output waveform, is illustrated. Generalized space vector theory is used to model the inverter and the SVPWM. As per the general inverter switching theory there are 215 =...
Multiphase drives are now becoming serious competitor to traditional three-phase drives due to reasons of better fault tolerant property and reduced per-phase converter rating that are especially suited to high power drives application. One of the major factor of widespread research on multiphase drive are the availability of high computational power of control platforms such as DSP and FPGAs. With...
Multiphase electric drives have been investigated and proposed for applications where the highest overall system reliability and the reduction in the total power per phase are required. This paper deals with the high performance Backstepping control strategy which is based on laws allowing an explicit control of system stability in closed-loop operation of five-phase induction motor drives. This control...
The paper present simple carrier-based pulse width modulation scheme for three to five-phase matrix converters feeding a five-phase machine from both ends. The two matrix converters feeding a five-phase induction machine are supplied from a common single three-phase source. The five-phase outputs of the two matrix converters are assumed to supply a five-phase machine from both ends. The paper presents...
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