A new control algorithm for three-phase PWM buck rectifier with input displacement factor compensation

1994 ◽  
Vol 9 (2) ◽  
pp. 173-180 ◽  
Author(s):  
S. Hiti ◽  
V. Vlatkovic ◽  
D. Borojevic ◽  
F.C.Y. Lee
Keyword(s):  
Control Algorithm ◽  
Three Phase ◽  
Displacement Factor

scholarly journals An Optimal Control Algorithm with Reduced DC-Bus Current Fluctuation for Multiple Charging Modes of Electric Vehicle Charging Station

2021 ◽  
Vol 12 (3) ◽  
pp. 107
Author(s):  
Tao Chen ◽  
Peng Fu ◽  
Xiaojiao Chen ◽  
Sheng Dou ◽  
Liansheng Huang ◽  
...  
Keyword(s):  
Electric Vehicle ◽  
Electric Vehicles ◽  
Control Algorithm ◽  
Current Fluctuation ◽  
Charging Station ◽  
Electric Vehicle Charging ◽  
Three Phase ◽  
Optimization Control ◽  
Dc Bus ◽  
Vehicle Charging

This paper presents a systematic structure and a control strategy for the electric vehicle charging station. The system uses a three-phase three-level neutral point clamped (NPC) rectifier to drive multiple three-phase three-level NPC converters to provide electric energy for electric vehicles. This topology can realize the single-phase AC mode, three-phase AC mode, and DC mode by adding some switches to meet different charging requirements. In the case of multiple electric vehicles charging simultaneously, a system optimization control algorithm is adopted to minimize DC-bus current fluctuation by analyzing and reconstructing the DC-bus current in various charging modes. This algorithm uses the genetic algorithm (ga) as the core of computing and reduces the number of change parameter variables within a limited range. The DC-bus current fluctuation is still minimal. The charging station system structure and the proposed system-level optimization control algorithm can improve the DC-side current stability through model calculation and simulation verification.

scholarly journals Attenuation of DC-Link Pulsation of a Four-Wire Inverter during Phase Unbalanced Current Operation

2021 ◽  
Vol 11 (3) ◽  
pp. 1322
Author(s):  
Dariusz Zieliński ◽  
Karol Fatyga
Keyword(s):  
Energy Storage ◽  
Control Algorithm ◽  
Reactive Power ◽  
Lithium Ion ◽  
Power Converter ◽  
Dual Active Bridge ◽  
Three Phase ◽  
Ion Storage ◽  
Energy Store ◽  
Phase Converter

This paper proposes a control algorithm for a hybrid power electronic AC/DC converter for prosumer applications operating under deep phase current asymmetry. The proposed system allows independent control of active and reactive power for each phase of the power converter without current pulsation on the DC link connected to an energy store. The system and its algorithm are based on a three-phase converter in four-wire topology (AC/DC 3p-4w) with two dual-active bridge (DC/DC) converters, interfaced with a supercapacitor and an energy storage. The control algorithm tests were carried out in a Hardware in the Loop environment. Obtained results indicate that operation with deep unbalances and powers of opposite signs in individual phases leads to current oscillations in the DC link. This phenomenon significantly limits energy storage utilization due to safety and durability reasons. The proposed algorithm significantly reduces the level of pulsation in the DC link which increases safety and reduces strain on lithium-ion storage technology, enabling their application in four-wire converter applications.

An Application Seven-Level Converter for VSC-HVDC Station System

2015 ◽  
Vol 799-800 ◽  
pp. 1211-1216
Author(s):  
Narin Watanakul
Keyword(s):  
Process Control ◽  
Control Algorithm ◽  
Current Control ◽  
Multilevel Converter ◽  
Two Phase ◽  
Hvdc System ◽  
Hvdc Transmission ◽  
Data Process ◽  
Three Phase ◽  
Level Converter

This paper presents an application of an asynchronous back to back VSC-HVDC system. Which uses multilevel converter a 7-level Diode-Clamped SPWM converters topology technique for the realization of HVDC system, rated 300MVA (±300 kV). The controller has been proposed by using PQ control and feed-forward decoupled current control algorithm. The design and experimentally controllers of VSC in lab scaled test, MATLAB/Simulink program were performed VSC-HVDC transmission system, the simulation in order to evaluate transient performance, can be controlled independently under two phase to ground faulted and three phase to ground faulted conditions. The system are used as a guideline for analysing and design of the data process control with the PQ-control HVDC system.

Research on Deadbeat Control for Three-Phase Grid-Connected Inverter in Model Based Design

2012 ◽  
Vol 241-244 ◽  
pp. 1159-1163
Author(s):  
Gu Jing Han ◽  
Meng Zou ◽  
Wu Zhi Min
Keyword(s):  
Control Algorithm ◽  
The Self ◽  
Deadbeat Control ◽  
Experiment Platform ◽  
Model Based ◽  
Basic Procedure ◽  
Three Phase ◽  
Grid Connected Inverter ◽  
Hardware In Loop ◽  
Hardware Platforms

Using model based design(MBD) method, deadbeat control algorithm for three-phase grid-connected inverter was designed in optimization and realized in hardware. According to the advanced idea of MBD and its basic procedure, the software-in-loop(SIL) test, processor-in-loop(PIL) test and hardware-in-loop(HIL) test for deadbeat control algorithm were mainly researched under MATLAB/Simulink environment choosing TMS320F2812 as object hardware board. In such method, embedded codes could be produced automatically and the errors brought in through algorithm model could be tested and corrected earlier. Meanwhile, simply changing the PIL related modules, the self-defined deadbeat algorithm module could be flexibly applied in other hardware platforms. At last, the correctness and efficiency of deadbeat control algorithm were verified in three-phase grid-connected inverter experiment platform.

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