Application of the One-Cycle Control technique to a three-phase three-level NPC Rectifier

Bento, Aluisio A. M.; Vieira, Paula K. P.; Silva, E.R.C. da

doi:10.1109/ecce.2012.6342702

Cited by 5 publications

(3 citation statements)

References 19 publications

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“…The most important feature of OCC is the control of the carrier amplitude and not the control variable as done by the PWM‐based controllers. This technique provides disturbance rejection, robustness, good stability and fast dynamic response [26–29, 31].…”

Section: Occ‐based Controllersmentioning

confidence: 99%

Design and operation of an OCC‐based scheme for a stand‐alone PV system powering DC loads

Neto

Salazar

Lock

2019

IET Renewable Power Generation

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Distributed energy resources such as stand-alone photovoltaic (PV) systems have been widely used in electric systems in the last decades due to the increase in global energy demand, and the concern about the environmental problems caused by fossil fuels power generation. Owing to the fast growing of direct current (DC) microgrids and electronic devices, such as their current compatibility nature in relation to primary sources, a small-scale stand-alone PV system with battery storage for DC applications is proposed in this work. The system consists of three DC-DC converters which operate according to the PV panel power and the main bus load demand. The control of these converters considers the quality in power supply ensuring safety to the loads and batteries of the system. Thus, this study proposes the implementation of the control units through the use of one-cycle control (OCC) which allows fast response to transient conditions, great accuracy of convergence and has lowcost analogue implementation. In this study, one-cycle controllers' waveforms are analysed in steady-state conditions and its duty cycles are compared with the expected in relation to the system operation. Simulations of transition conditions were performed through real situations such as cloud-edge effects, slow passing clouds and absence of sunlight.

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Section: Occ‐based Controllersmentioning

confidence: 99%

Design and operation of an OCC‐based scheme for a stand‐alone PV system powering DC loads

Neto

Salazar

Lock

2019

IET Renewable Power Generation

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“…3 b . The OCC technique does not use any current template or analogue/digital multipliers, thus eliminating the need of grid voltage and load current sensors with consequent reduction of cost in analogue implementation and the processing effort in digital implementation [29, 30]. Also, in OCC design, grid currents are directly applied to the PWM and compared with a variable amplitude carrier signal.…”

Section: Pfc Rectifier and Hybrid Pwm Techniquementioning

confidence: 99%

Hybrid one‐cycle control technique for three‐phase power factor control

Bento¹,

Lock

Silva

et al. 2018

IET Power Electronics

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One-cycle control technique has been a prominent and suitable solution for improving power quality with the help of three-phase rectifiers. This study proposes a generalised control strategy for the three-phase power factor rectifier based on both the one-cycle control technique and the hybrid pulse-width modulation (PWM) strategy. Improvement of the performance while providing very low-current total harmonic distortion (THD) is achieved with the proposed scheme. Discontinuous and/or continuous PWM operation is possible with advantages of simplicity, robustness, and low cost. Simulation and experimental results confirm the feasibility of the proposed controller.

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“…One-cycle control was proposed by K. M. Smedley in 1991 [16]. Since then, it has become increasingly popular in controlling single-phase and three-phase alternating current/direct current (AC/DC) pulse-width modulation (PWM) converters [17]- [20]. When OCC is used in boost-type PWM rectifiers, the input current is automatically forced to be in phase with the grid voltage in the sinusoidal waveform with no requirement for the phase-locked loop (PLL), grid voltage sensors and frame transformation [21]- [23].…”

Section: Introductionmentioning

confidence: 99%

Voltage Balancing Control of Cascaded Single-Phase VIENNA Converter Based on One Cycle Control With Unbalanced Loads

Wang

Cheng

et al. 2020

IEEE Access

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A research study on a type of cascaded single-phase VIENNA converter (CSVC) is presented in this paper. And a type of DC voltage balancing control strategy for each cascaded module of the CSVC based on improved one-cycle control (I-OCC) is proposed, in which voltage balancing signals are added to the conventional OCC (C-OCC) control loop to cause a difference in the modulation signals of each of the cascaded modules, so that the DC voltages of all modules can be quickly balanced under unbalanced loads. At the same time, the average modulation wave maintains a constant value so that the CSVC achieves a unity power factor operation. The operating principle of the I-OCC strategy is discussed in detail, and the corresponding mathematical relationships are derived. In the proposed strategy, the ability to adjust the DC voltages is also analyzed. Finally, the simulation and experiment results are provided to verify the validity and feasibility of this I-OCC-based voltage balancing control strategy. The control strategy proposed by this paper is also applicable to all other cascaded unidirectional rectifiers.INDEX TERMS Cascaded single-phase VIENNA converter (CSVC), multilevel converter, unbalanced loads, one cycle control (OCC), voltage balancing control.

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Application of the One-Cycle Control technique to a three-phase three-level NPC Rectifier

Cited by 5 publications

References 19 publications

Design and operation of an OCC‐based scheme for a stand‐alone PV system powering DC loads

Design and operation of an OCC‐based scheme for a stand‐alone PV system powering DC loads

Hybrid one‐cycle control technique for three‐phase power factor control

Voltage Balancing Control of Cascaded Single-Phase VIENNA Converter Based on One Cycle Control With Unbalanced Loads

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