High voltage multilevel converter with regeneration capability

Rodríguez, José; Morán, L.; Gonzalez, A.; Silva, C.

doi:10.1109/pesc.1999.785645

Cited by 40 publications

(16 citation statements)

References 6 publications

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“…The advantage of multilevel inverters is they form a waveform with minute voltage steps for getting very low harmonic distortion and less amount of dv/dt.Most of the applications are utilizing multilevel traditional inverters. [1][2][3][4] , Fundamental multilevel inverters [5][6][7] and cascaded multilevel inverters. The circuit design and desired results of an inverter depend on the switching pattern of a control circuit, the output of controllers are nothing but a pulse train of average time.…”

Section: Introductionmentioning

confidence: 99%

Crucial Voltage Identification of a Seven Level Multilevel Inverters using AMM for Microgrid Applications

Rao¹,

Vaisakh²

2019

IJITEE

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This paper presents a single-phase efficient and generalized basic topology that is adaptable for multilevel inverters. The proposed structure is run by a switching pattern of the power switches i.e, subharmonic pulse width modulation (SHPWM) or comparison of triangular carrier high-frequency waveforms with a sinusoidal reference waveform. This chapter shows an asymmetric modulation method (AMM) hybrid modulation inverter with its working and performance verified through the simulation studies conducted in MATLAB Simulink software. A test for crucial voltage identification has also been carried out that recognizes the most important voltage source that must be maintained constant, else it would adversely effect the circuit’s operation.

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Section: Introductionmentioning

confidence: 99%

Crucial Voltage Identification of a Seven Level Multilevel Inverters using AMM for Microgrid Applications

Rao¹,

Vaisakh²

2019

IJITEE

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“…This is effective, but greatly increases the costs on power devices, and each cell needs extra voltage and current measurement circuits for rectifier control leading to higher cost and control complexity. A single-phase H-bridge and a half bridge are also suggested as the AFE [19]- [23]. These approaches partly reduce the costs on power devices and the input transformers, but will result in larger ripples in DC-link voltage and the converter is vulnerable to grid-side voltage imbalance.…”

Section: Introductionmentioning

confidence: 99%

A Regenerative Cascaded Multilevel Converter Adopting Active Front Ends Only in Part of Cells

Gong

Xiong

Liu

et al. 2015

IEEE Trans. on Ind. Applicat.

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This paper studies a regenerative cascaded multilevel converter which substitutes active front ends for the diode-based front ends only in part of cells, and proposes a power tracking control strategy which doesn't need any motor parameters. During the induction motor's deceleration, by controlling the two kinds of cells' output voltages according to the motor's power factor angle, the converter makes the motor generated energy wholly collected by regenerative cells and thus other cells' DC-link voltages remain stable. Regeneration limitation is analyzed. The simulation results of a 6-kV six-cell cascaded converter and experiments on a laboratory cascaded converter verify that the converter can transfer the motor power back to the grid and allows the motor to decelerate more quickly. And the control strategy is suitable for the drive systems whose regenerated power can not be estimated or is varying.

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“…The work described in [15] presents a configuration where multiple cascaded H-bridges are used for power factor correction. Use of floating capacitor H-bridge based five-level inverter and its control algorithms for active front-end operation is presented in [16].…”

Section: Introductionmentioning

confidence: 99%

A hybrid multilevel inverter scheme for induction motor drives and grid-tied applications using a single DC-link

Kaarthik

Kumar

Gopakumar

et al. 2015

2015 IEEE International Conference on Industrial Technology (ICIT)

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This paper proposes a hybrid seventeen-level induction motor drive with a single DC-link fed from a five-level active front-end converter connected to the utility grid. The five-level active front-end draws power from the grid at unity power factor and feeds a seventeen level induction motor drive. Both the grid side inverter (five-level) and the load side inverter (seventeen-level) are realized by cascading a three-level flying capacitor inverter with floating capacitor H-bridges. The voltages of the floating capacitors are controlled by switching through the redundant states. The capacitor voltage is regulated for all power factors irrespective of current direction. The main advantage of the proposed scheme is that, both front-end converter and the induction motor drive use a single DC-bus which enables multiple sources to interact easily with the proposed system. In addition to that, the proposed system can be operated in all four quadrants which enables bi-directional power flow. As an advantage, this system can operate at full power with reduced number of levels even when some devices of the H-bridges fail. This improves performance of the system without compromising on the reliability of the overall system. The performance of the drive for various operations has been verified experimentally.

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High voltage multilevel converter with regeneration capability

Cited by 40 publications

References 6 publications

Crucial Voltage Identification of a Seven Level Multilevel Inverters using AMM for Microgrid Applications

Crucial Voltage Identification of a Seven Level Multilevel Inverters using AMM for Microgrid Applications

A Regenerative Cascaded Multilevel Converter Adopting Active Front Ends Only in Part of Cells

A hybrid multilevel inverter scheme for induction motor drives and grid-tied applications using a single DC-link

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