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This paper presents space vector PWM algorithm for six- switch three-phase inverters (SSTPI) using Artificial Neural Networks (ANN) based on the ready-to-use field-programmable gate array (FPGA) technology. ANN is used to calculate ON-OFF time for six switches when given the angle and modulation index of required voltage space vector. This approach has the advantage of very fast implementation of...
This paper presents and analyses a new dynamic adaptive space vector PWM algorithm for four-switch three-phase inverters (FSTPI) fed induction motor under DC-link voltage ripple. By using reasonable mathematical transform, Space Vector PWM technique for FSTPI under DC-link voltage imbalance or ripples has been proposed, which is based on the establishment of basic space vectors and modulation technique...
This paper proposes a new space vector PWM technique for four-switch three-phase inverters (FSTPI) under DC-link voltage ripple condition with the optimization of the amplitude of first harmonic output voltage. The proposed algorithm is based on the establishment of quasi-space-vectors with their maximum length and modulation technique, which is simulated the technique for six-switch three-phase inverters...
This paper is to present a new space vector PWM algorithm for four- switch three-phase inverters (FSTPI) fed induction motor under DC-link voltage imbalance. By using reasonable mathematical transform, space vector PWM technique for FSTPI under DC-link voltage imbalance or ripples have been solved, which is based on the establishment of basic space vectors and modulation technique in similarity with...
This paper is to present a space vector PWM algorithm for four switch three phase inverters (B4, FSTPI) based on the one for six switch three phase inverters (B6, SSTPI) (principle of similarity) where the alphabeta plan is divided into 6 sectors and the formation of the required reference voltage space vector is done in the same way as for B6 by using effective (mean) vectors. This facilitates the...
This paper presents the development of neural- network-based controller of space vector modulation (ANN-SVPWM) for low-cost voltage-source inverters. This ANN-SVPWM controller completely covers the undermodulation and overmodulation modes with operation extended linearly and smoothly up to square wave (six-step). The ANN controller has the advantage of the very fast implementation of an SVM algorithm...
An on-line approach for calculating of conducting angles for a multilevel cascaded inverter is presented. The proposed method is a combination of equal voltage-second area and superposition principles. The conducting angle for each voltage level can be determined so that the fundamental component of the output voltage waveform of each H-bridge inverter unit musts accord with each voltage-second area...
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