Finite Set Model Predictive Current Control of Three Phase Neutral Point Clamped Inverter with Reduced Leg Count

2016 ◽  
pp. 319-326
Author(s):  
Eedara Aswani Kumar ◽  
K. Chandra Sekhar ◽  
R. Srinivasa Rao
Keyword(s):  
Current Control ◽  
Neutral Point ◽  
Three Phase ◽  
Finite Set

scholarly journals Coast function parameters optimization for DC battery source inverter feeding three-phase inductive load

2020 ◽  
Vol 11 (4) ◽  
pp. 1799
Author(s):  
Riyadh G. Omar
Keyword(s):  
Objective Function ◽  
Execution Time ◽  
Predictive Accuracy ◽  
Absolute Error ◽  
Current Control ◽  
Parameters Optimization ◽  
Inductive Load ◽  
Three Phase ◽  
Finite Set ◽  
Induction Motor Load

The commonly reported measures of the predictive accuracy are evaluated in this paper. Absolute, squared, percentage, and integral errors methods are implemented, to reduce the objective function, which employed in model predictive control. These methods are usually investigated for dc source inverter, which controlled by finite set model predictive current control system, with three phase induction motor load. In this paper, the evaluation includes different aspects, accuracy, complexity, system harmonics content, and execution time. A vital criterion in this process is the performance of the inverter, and the matching between the reference and the measured machine currents. The evaluation shows that for one term objective function, absolute and square errors give similar results with less execution time for the absolute error, but if multi terms objective function the square error is better.

Inductor Saturation Compensation in Three-Phase Three-Wire Voltage-Source Converters via Inverse System Dynamics-I

2020 ◽  
Author(s):  
Ziya Özkan ◽  
Ahmet Masum Hava
Keyword(s):  
Dynamic Model ◽  
Dynamic Performance ◽  
Current Control ◽  
Inverse System ◽  
Voltage Source ◽  
Voltage Source Converter ◽  
Two Phase ◽  
Inverse Dynamic ◽  
Three Phase ◽  
Steady State Current

In three-phase three-wire (3P3W) voltage-source converter (VSC) systems, utilization of filter inductors with deep saturation characteristics is often advantageous due to the improved size, cost, and efficiency. However, with the use of conventional synchronous frame current control (CSCC) methods, the inductor saturation results in significant dynamic performance loss and poor steady-state current waveform quality. This paper proposes an inverse dynamic model based compensation (IDMBC) method to overcome these performance issues. Accordingly, a review of inductor saturation and core materials is performed, and the motivation on the use of saturable inductors is clarified. Then, two-phase exact modelling of the 3P3W VSC control system is obtained and the drawbacks of CSCC have been demonstrated analytically. Based on the exact modelling, the inverse system dynamic model of the nonlinear system is obtained and employed such that the nonlinear plant is converted to a fictitious linear inductor system for linear current regulators to perform satisfactorily.

Predictive Current Control of a Simplified Three-Level Neutral-Point Clamped Inverter

2019 ◽  
Author(s):  
Md. Anwer Hossain ◽  
Md. Tariquzzaman ◽  
Amit Kumer Podder ◽  
Md. Shahadath Hossain Sabbir ◽  
Md. Habibullah
Keyword(s):  
Current Control ◽  
Neutral Point
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