scholarly journals Novel Five-Level ANPC Bidirectional Converter for Power Quality Enhancement during G2V/V2G Operation of Cascaded EV Charger

Energies ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2650
Author(s):  
Jorge Lara ◽  
Lesedi Masisi ◽  
Concepcion Hernandez ◽  
Marco A. Arjona ◽  
Ambrish Chandra
Keyword(s):  
Power Quality ◽  
Single Phase ◽  
Quality Analysis ◽  
Control Technique ◽  
Power Losses ◽  
Multilevel Converter ◽  
Vehicle To Grid ◽  
Bidirectional Converter ◽  
In Series ◽  
Isolation Transformer

This paper presents a novel single-phase (SP) active-neutral point clamped (ANPC) five-level bidirectional converter (FLBC) for enhancing the power quality (PQ) during the grid-to-vehicle (G2V) and vehicle-to-grid (V2G) operation of an electric vehicle (EV) charger connected in series. This EV charger is based on a dual-active half-bridge DC-DC converter (DAHBC) with a high frequency isolation transformer. Unlike the comparable ANPC topologies found in literature, the proposed one has two more switches, i.e., ten instead of eight. However, with the addition of these components, the proposed multilevel converter not only becomes capable of properly balancing the voltage of the DC-link split capacitors under various step-changing conditions but it achieves a better efficiency, a lower stress of the switching devices and a more even distribution of the power losses. The resulting grid-tied ANPC-SPFLBC and DAHBC are accurately controlled with a cascaded control strategy and a single-phase shift (SPS) control technique, respectively. The simulation results obtained with MATLAB-SimPowerSystems as well as the experimental results obtained in laboratory validate the proposed ANPC-SPFLBC for a set of exhaustive tests in both V2G and G2V modes. A detailed power quality analysis carried out with a Fluke 43B alike demonstrates the good performance of the proposed topology.

Single-Phase AC–DC–AC Multilevel Converter Based on H-Bridges and Three-Leg Converters Connected in Series

2018 ◽  
Vol 54 (5) ◽  
pp. 4696-4706 ◽  
Author(s):  
Antonio de Paula Dias Queiroz ◽  
Cursino Brandao Jacobina ◽  
Nayara Brandao de Freitas ◽  
Ayslan Caisson Noraes Maia ◽  
Victor Felipe Moura Bezerra Melo
Keyword(s):  
Single Phase ◽  
Multilevel Converter ◽  
In Series

scholarly journals Power Quality Analysis of Single Phase Full Bridge Rectifier Fed DC Motor Drive

IJIREEICE ◽  
2018 ◽  
Vol 6 (11) ◽  
pp. 72-77
Author(s):  
Karthik Kumar K ◽  
Siddharthan S T ◽  
Saiayyappa O R
Keyword(s):  
Power Quality ◽  
Single Phase ◽  
Dc Motor ◽  
Quality Analysis ◽  
Motor Drive ◽  
Bridge Rectifier ◽  
Power Quality Analysis

scholarly journals Power Quality Analysis of the Output Voltage of AC Voltage and Frequency Controllers Realized with Various Voltage Control Techniques

2021 ◽  
Vol 11 (2) ◽  
pp. 538
Author(s):  
Naveed Ashraf ◽  
Ghulam Abbas ◽  
Rabeh Abbassi ◽  
Houssem Jerbi
Keyword(s):  
Power Quality ◽  
Output Voltage ◽  
Frequency Control ◽  
Voltage Control ◽  
Voltage Regulation ◽  
Quality Analysis ◽  
Control Technique ◽  
Control Techniques ◽  
Power Quality Analysis ◽  
Selection Of

Single-phase and three-phase AC-AC converters are employed in variable speed drive, induction heating systems, and grid voltage compensation. They are direct frequency and voltage controllers having no intermediate power conversion stage. The frequency controllers govern the output frequency (low or high) in discrete steps as per the requirements. The voltage controllers only regulate the RMS value of the output voltage. The output voltage regulation is achieved on the basis of the various voltage control techniques such as phase-angle, on-off cycle, and pulse-width modulation (PWM) control. The power quality of the output voltage is directly linked with its control techniques. Voltage controllers implemented with a simple control technique have large harmonics in their output voltage. Different control techniques have various harmonics profiles in the spectrum of the output voltage. Traditionally, the evaluation of power quality concerns is based on the simulation platform. The validity of the simulated values depends on the selection of the period of a waveform. Any deficiency in the selection of the period leads to incorrect results. A mathematical analytical approach can tackle this issue. This becomes important to analytically analyze the harmonious contents generated by various switching control algorithms for the output voltage so that these results can be successfully used for power quality analysis and filtering of harmonics components through various harmonics suppression techniques. Therefore, this research is focused on the analytical computation of the harmonics coefficients in the output voltage realized through the various voltage and frequency control techniques. The mathematically computed results are validated with the simulation and experimental results.

Single-phase AC-DC-AC multilevel converter for grid overvoltage based on an H-bridge connected in series to the five-leg converter

2017 ◽  
Author(s):  
Antonio de P. D. Queiroz ◽  
Cursino B. Jacobina ◽  
Ayslan C. N. Maia ◽  
Victor F. M. B. Melo ◽  
Nayara B. de Freitas ◽  
...  
Keyword(s):  
Single Phase ◽  
Multilevel Converter ◽  
In Series

Potential Power Quality Benefits of Electric Vehicles

2013 ◽  
Vol PP (99) ◽  
pp. 1-8 ◽  
Keyword(s):  
Real Time ◽  
Power Quality ◽  
Electric Vehicles ◽  
Single Phase ◽  
Low Voltage ◽  
Distribution Grid ◽  
Vehicle To Grid ◽  
Voltage Drops ◽  
Cloudy Weather ◽  
Real Time Digital Simulator

Electric vehicles (EVs) are likely to have a continued presence in the light-vehicle market in the next few decades. As a result, EV charging will put an extra burden on the distribution grid and adjustments need to be made in some cases. On the other hand, EVs have the potential to support the grid as well. This paper presents a single-phase bidirectional charger topology which pairs up a photovoltaic (PV) source with an EV charger resulting in production cost reduction. The presented topology is then used for vehicle-to-grid (V2G) services. The main focus of this paper is on power quality services which only slightly discharge the battery. Among these services, it studies the possibility of local reactive injection of EVs connected to the grid through a single-phase charger to compensate for voltage drops caused by motor startup or inductive loads. It also studies the possibility of active power injection of EVs for short time periods during PV transients in cloudy weather to keep the system stable. It also studies the potential of EVs to help during low voltage ride-through of the PV sources. The studies are performed using Simulink simulations and a real-time implementation in Real Time Digital Simulator (RTDS). The results demonstrate the effectiveness of power quality V2G services with small wear on the EV battery.

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