An optimized SVPWM switching strategy for three-level NPC VSI and a novel switching strategy for three-level two-quadrant chopper to stabilize the voltage of capacitors

Reza, Alizadeh Pahlavani Mohammad; Ali, Mohammadpour Hossine

doi:10.1016/j.energy.2010.08.033

Cited by 13 publications

(2 citation statements)

References 19 publications

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“…To conclude, it is important to note that for PCSs number #1, #5 and #6, the topology of the front-end inverter can be realized in the form of the well known 2-level H-bridge structure, or as a multilevel neutral point clamped structure (NPC) [10], being the 3-level NPC structure the most approachable one. Table 1 summarizes literature on the previously defined PCSs, covering both experiences in industry and academic research.…”

Section: Classification Of Power Conversion Systemsmentioning

confidence: 99%

A Comparison of Power Conversion Systems for Modular Battery-Based Energy Storage Systems

et al. 2020

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A modular battery-based energy storage system is composed by several battery packs distributed among different modules or parts of a power conversion system (PCS). The design of such PCS can be diverse attending to different criteria such as reliability, efficiency, fault tolerance, compactness and flexibility. The present paper proposes a quantitative and qualitative comparison among the most widely proposed PCSs for modular battery-based energy storage systems in literature. The obtained results confirm the high performance of those PCSs based on the parallel connection of different modules to a single point of common coupling, also identifying those based on modular multilevel cascaded converters as promising concepts according to the assumptions of the present paper. INDEX TERMS Hybrid energy storage systems, batteries, power electronics.

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Section: Classification Of Power Conversion Systemsmentioning

confidence: 99%

A Comparison of Power Conversion Systems for Modular Battery-Based Energy Storage Systems

et al. 2020

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“…In [5], an optimised SVPWM switching strategy was proposed to stabilise the voltage of capacitors. In [6], a novel SVPWM strategy was proposed for two‐level three‐phase VSI, which could eliminate the harmonics nearby PWM frequency.…”

Section: Introductionmentioning

confidence: 99%

GA–PSO approach for optimising space‐vector PWM control sequence

Ning¹,

Dai²,

Peng³

2019

IET Power Electronics

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Space-vector pulse width modulation (SVPWM) provides several degrees of freedom, which can be optimised to improve the harmonic performance of the three-phase inverter. Genetic algorithm (GA) and immune algorithm (IA) are the two classical probabilistic optimisation algorithms, which are simple in structure and do not need an accurate mathematical model. However, the optimisation accuracy and reliability are low when they optimise the high-dimensional non-linear problem, such as SVPWM control sequence of the three-phase inverter. To cope with these problems, a genetic algorithm-particle swarm optimisation (GA-PSO) is proposed here, which introduces the mutation of GA into discrete PSO. The global and local optimisation ability of the algorithm is greatly improved by the introduction of mutation operation. The results of MATLAB/ SIMULINK simulation show that the weighted total harmonic distortion (WTHD) by the optimal SVPWM control sequence based on GA-PSO is 0.199%, which is much better than that of the PSO, IA, and GA. The average generation number of GA-PSO is only 1/500 of IAs. Further experimental data verify that the WTHD by the optimal SVPWM control sequence based on GA-PSO is lower than that of conventional SVPWM and IA.

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A novel structure proposal for distributed generation using SMES and PV system with relative controllers design

Naderi

Fallahi

2014

Energy Syst

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A combined power source including superconductor magnetic energy storage system (SMES) and photovoltaic (PV) systems has been considered for distributed generation system as a hybrid power source in this research. Both power sources have been connected to power grid and some controllers have been designed for power injection control. The SMES system can be in charging mode via PV system and power grid. Moreover, power injection controller has been designed for tuning of produced power of PV and SMES system. For this aim, a DC/DC converter has been connected to PV system and a bi-directional-three-level chopper has been used for SMES. PV power control has been based on the DC/DC converter control and the chopper control has been used for SMES power control. On the other hands, inverter control has been confirmed for injection of active/reactive power from distributed generation system to power grid. Proposal of a new scheme and design of a novel controller, are the advantages of this research. Finally, a series of simulation results have been shown.Keywords PV system · SMES · Bi-directional-three-level chopper · Chopper switching · Three level inverter · Power injection List of symbols AThe ideal coefficient related to photovoltaic cell model The current source related to photovoltaic system model I SC The short circuit current of the diode used in the photovoltaic cell model I RS The short reversed saturated current of the diode used in the photovoltaic cell model K Boltzmann constant K IThe temperature effect coefficient on the current of used diode in the photovoltaic cell model N sThe number of series cells in photovoltaic package N pThe number of parallel cells in photovoltaic package P PVThe power of photovoltaic system P T rThe transmitted active power from the distributed generation system into the power grid P PV -Max The maximum accessible power from the photovoltaic system qThe numerical value of electron Q T rThe transmitted reactive power from the distributed generation system into the power grid R sThe series resistor of each diode in photovoltaic package R shThe parallel resistor of each diode in photovoltaic package T cThe temperature of the environment in photovoltaic system T re fThe reference temperature in photovoltaic system model V c1 , V c2 DC-link capacitors voltage V DC

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An optimized SVPWM switching strategy for three-level NPC VSI and a novel switching strategy for three-level two-quadrant chopper to stabilize the voltage of capacitors

Cited by 13 publications

References 19 publications

A Comparison of Power Conversion Systems for Modular Battery-Based Energy Storage Systems

A Comparison of Power Conversion Systems for Modular Battery-Based Energy Storage Systems

GA–PSO approach for optimising space‐vector PWM control sequence

A novel structure proposal for distributed generation using SMES and PV system with relative controllers design

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