Reversible AC Drive Systems Based on Parallel AC-AC DC-Link Converters

Jacobina, Cursino B.; Santos, Euzeli Cipriano dos; Gouveia, B. de S.; Silva, E.R.C. da

doi:10.1109/08ias.2008.191

Cited by 6 publications

(6 citation statements)

References 44 publications

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“…Voltages v * s1 and v * s2 can be defined from the reference pole voltages by an equation as (13), and the auxiliary variables v * ba and v * xsj are defined by…”

Section: Series-mode-machine-side Convertermentioning

confidence: 99%

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Flexible Series/Parallel AC–DC–AC Motor Drive System

Jacobina

Rocha

Carlos

et al. 2015

IEEE Trans. on Ind. Applicat.

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This paper presents a three-phase ac-dc-ac drive system to cope with applications in which high performance and reliability are required with reduced dc-link and switch blocking voltages. The subsystem at the grid-side can be implemented into two alternatives, i.e., topologies G1 and G2. While G1 presents a sole three-phase transformer connected in series between the three-phase grid and converter Ag, whose secondary is connected to the converter Bg, G2 has a three-phase transformer with two taps at the secondary. The transformers in G1 and G2 process part and total system power, respectively. The subsystem at the machine-side is composed of the machine and two converters that allow series-and parallel-modes for the three-phase machine. The interesting characteristic of the system is to adapt its machine-side configuration as a function of the speed. The proposed configurations guarantee low harmonic distortion for both high speed (high voltage) and low speed (low voltage) operations with a higher modulation index. In addition, the system allows the machine's operation with high current at low speed, which is interesting for applications with constant mechanical load. A comprehensive model of the proposed systems and modulation strategies are presented. Simulated and experimental results validate the theoretical expectations.

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“…Voltages v * s1 and v * s2 can be defined from the reference pole voltages by an equation as (13), and the auxiliary variables v * ba and v * xsj are defined by…”

Section: Series-mode-machine-side Convertermentioning

confidence: 99%

“…Such an arrangement allows for reducing the current levels of each converter and can feed the machine with multilevel voltages when combined with the interleaved technique. Furthermore, parallel configurations can reduce the power losses of the converter without increasing the harmonic distortion as compared with a single converter [13].…”

mentioning

confidence: 99%

Flexible Series/Parallel AC–DC–AC Motor Drive System

Jacobina

Rocha

Carlos

et al. 2015

IEEE Trans. on Ind. Applicat.

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“…This paper proposes an alternative solution for phase conversion with very low overall cost, moderate motor performance during start up and high steady-state performance at line frequency. This system fits the requirements in rural areas where only a single-phase supply is available [2].…”

Section: Introductionmentioning

confidence: 99%

Phase Converter Using Microcontroller

2017

IJAERD

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-It is a simple converter for driving a load with a single-phase ac supply. Using only six active switch MOSFET and Microcontroller. The single phase supply is first converted into dc supply by using rectifier again dc supply of rectifier is given to inverter where MOSFET are used and converts the dc supply again into three phase ac supply. The experimental result showed that nearly square waveform produced remained approximately constant with increase in load. We can also control the speed of the motor which is connect as the load by changing the frequency of motor we do not need the different type of speed control of motor as our project itself control the speed of motor. The phase converter is only the device which can easily convert the single phase into three phase, where only single phase is available specially in remote location area. It is also very cheaper compare to the other instrument like rotary converter, Static converter, and Buck bush converter. This type of converter specially hold the benefit for the irrigation purpose in which large amount of water is needed. So larger rating of motor or pump is used which is run at three phase supply so this converter can used for running the motor. Due to that the consumer does not need to pay the extra money for three phase supply.

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“…Additional switches were connected to the four-switch full-bridge converter to reduce the dc-bus voltage ripple and thus, increase the power density [5]. The multiloop control was modified to reduce the circulating current in parallel full-bridge converters in [6], [7], and [10]. In addition, the maximum power point tracking scheme and the multiloop control were integrated to control the PVbased grid-tied system [8], [9].…”

mentioning

confidence: 99%

Bidirectional Current Sensorless Control for the Full-Bridge AC/DC Converter With Considering Both Inductor Resistance and Conduction Voltages

Chen

Liao

2014

IEEE Trans. Power Electron.

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Abstract-The full-bridge converter is often connected between the ac grid and the dc bus. In the conventional multiloop control, the inner current control loop shapes the ac-side current waveform, and the outer voltage control loop regulates the dc-bus voltage. In this paper, the single-loop bidirectional current sensorless control (BCSC) for the full-bridge ac/dc converter with considering both the inductor resistance and conduction voltage is first proposed. The average-value behavior of the full-bridge ac/dc converter is analyzed and it is simplified to an equivalent single-switch model. Based on this developed equivalent model, BCSC is designed and implemented in the FPGA-based system. There is only voltage control loop in the proposed BCSC (i.e., no current control loop), but BCSC is able to regulate the dc-bus voltage and shape the acside current. The provided results in both the rectifier operation and the inverter operation demonstrate the effectiveness of the proposed BCSC.Index Terms-Current sensorless control, full-bride converter.

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Reversible AC Drive Systems Based on Parallel AC-AC DC-Link Converters

Cited by 6 publications

References 44 publications

Flexible Series/Parallel AC–DC–AC Motor Drive System

Flexible Series/Parallel AC–DC–AC Motor Drive System

Phase Converter Using Microcontroller

Bidirectional Current Sensorless Control for the Full-Bridge AC/DC Converter With Considering Both Inductor Resistance and Conduction Voltages

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