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

Lara, Jorge; Masisi, Lesedi; Hernández, C.; Arjona, M. A.; Chandra, Ambrish

doi:10.3390/en14092650

Cited by 13 publications

(15 citation statements)

References 29 publications

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“…Figure 2 shows the four topologies of the NPC/ANPC 5L converters analyzed in this paper [17]- [19]. The topology of the 5LC proposed in this study for working as an active filter has been previously analyzed and validated in [16]. The switching states 𝑆𝑆 𝑘 , the state of the switches 𝑆 1−10 and the corresponding output voltage 𝑉 5𝐿𝐶 of such converter considering the voltage balancing condition always activated are shown in Table 1.…”

Section: A Five-level Bidirectional Convertermentioning

confidence: 99%

“…Nevertheless, as it will be further shown, their filtering dynamic response becomes sluggish and the converter cannot compensate for fast disturbances. In contrast, under the V2H mode, where the converter works as a conventional inverter with no power quality compensation capabilities, the voltage imbalance of capacitors becomes quite critical, since the load is being fed by a highly distorted voltage [16].…”

Section: Introductionmentioning

confidence: 99%

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Performance Evaluation of an Active Neutral-Point-Clamped Multilevel Converter for Active Filtering in G2V-V2G and V2H Applications

et al. 2022

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This paper presents the performance evaluation of a proposed single-phase bidirectional active neutral-point-clamped (ANPC) five-level converter (5LC) for active filtering in grid-to-vehicle (G2V), vehicle-to-grid (V2G) and vehicle-to-home (V2H) applications. In the system, the 5LC is series-connected with an electric vehicle battery charger based on a dual active half-bridge DC-DC converter (DAHBC). A cascaded strategy with a proportional-resonant compensator controls the 5LC whereas the DAHBC is controlled by a single phase-shift technique. A performance comparison is carried out for the proposed topology versus three NPC/ANPC 5L converters found in literature with similar topologies. The simulation results obtained in MATLAB-SimPowerSystems along with the experimental results obtained from a laboratory prototype validate the following: a) the first two literature topologies have the highest efficiencies, but they are incapable of balancing the voltage of the split-capacitors what increases the total harmonic distortion of both the grid current in the G2V/V2G modes and the 5LC output voltage in the V2H mode while producing a sluggish transient response, b) the 3rd literature topology like the proposed one properly balance the capacitors voltage and achieve a faster dynamics, but at the expense of an efficiency reduction, and c) unlike the former topology that continuously applies a natural but wasting unfedback voltage balancing strategy, the proposed one that includes a closed-loop control allows achieving an ANPC 5LC with a superior performance featured by a higher efficiency, a reduced switches stress, a flatter power losses distribution and a better power quality improving under the three modes of operation.

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Section: A Five-level Bidirectional Convertermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Performance Evaluation of an Active Neutral-Point-Clamped Multilevel Converter for Active Filtering in G2V-V2G and V2H Applications

et al. 2022

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“…Battery stacks can be charged from either a PV panel or a fuel cell. In [9], a half bridge converter with the pulsewidth modulation plus phase-shift control was presented to achieve bidirectional power operation. However, this circuit topology is a two-stage DC/DC converter.…”

Section: Introductionmentioning

confidence: 99%

Implementation of a Resonant Converter with Topology Morphing to Achieve Bidirectional Power Flow

Lin

2021

Energies

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A DC converter with the benefits of reverse power capability, less switching loss and wide voltage operation is presented and implemented for wide input voltage applications such as fuel cell energy, photovoltaic (PV) system and DC wind power. Two full bridge resonant circuits are used in the presented converter to achieve bidirectional power flow capability and reduce switching losses on active devices. To overcome the wide input DC voltage variation problem for fuel cell energy and PV solar panel, the topology morphing between the half bridge circuit and full bridge circuit is adopted on the primary side to obtain low (or high) voltage gain under a high (or low) input voltage condition. Therefore, the stable DC voltage is controlled at the load side by using the variable switching frequency modulation. The studied hybrid CLLC converter is tested by a 1 kW prototype and the performance is verified and confirmed by experiments.

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“…However, this circuit topology has high circulating current loss at freewheeling state and low circuit efficiency at low duty cycle operation if the wide voltage range is demanded. In [11][12][13][14], dual active bridge (DAB) PWM converters have been developed and implemented to have bidirectional power operation with V o = 300-450 V voltage range. The phase shift technique and duty cycle control are used in DAB converters to control power flow between input and output terminals.…”

Section: Introductionmentioning

confidence: 99%

Bidirectional Resonant Converter for DC Microgrid Applications

Lin

2021

Processes

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A bidirectional resonant converter is presented and verified in this paper for an electric vehicle battery charger/discharger system. The presented circuit can achieve forward and backward power operation, low switching losses on active devices, and wide output voltage operation. The circuit structure of the presented converter includes two resonant circuits on the primary and secondary sides of an isolated transformer. The frequency modulation approach is adopted to control the studied circuit. Owing to the resonant circuit characteristic, active devices for both forward (battery charge) and backward (battery discharge) power operation can be turned on at zero voltage switching. In order to implement a universal battery charger for different kinds of electric vehicle applications, the DC converter is demanded to have a wide output voltage range capability. The topology morphing between a full bridge resonant circuit and half bridge resonant circuit is selected to obtain high- and low-output voltage range operations so that the 200–500 V output voltage range is realized in the presented resonant converter. Compared to the conventional bidirectional converters, the proposed can be operated under a wide voltage range operation. In the end, a 1 kW laboratory prototype circuit is built, and experiments are provided to demonstrate the validity and performance of the presented bidirectional resonant converter.

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

Cited by 13 publications

References 29 publications

Performance Evaluation of an Active Neutral-Point-Clamped Multilevel Converter for Active Filtering in G2V-V2G and V2H Applications

Performance Evaluation of an Active Neutral-Point-Clamped Multilevel Converter for Active Filtering in G2V-V2G and V2H Applications

Implementation of a Resonant Converter with Topology Morphing to Achieve Bidirectional Power Flow

Bidirectional Resonant Converter for DC Microgrid Applications

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