Three Phase Three-Level PWM Switched Voltage Source Inverter With Zero Neutral Point Potential

Oh, Won-Sik; Han, Sang‐Kyoo; Choi, Sun Ha; Moon, Gun-Woo

doi:10.1109/tpel.2006.880300

Cited by 28 publications

(18 citation statements)

References 18 publications

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“…Cascade multilevel inverter (CMLI) structure has been attracting increasing interests in high power and medium voltage applications owing to its lower harmonics, higher efficiency and lower voltage stress compared to two-or three-level inverters [1], [2], [3], [4]. Diode clamped, flying capacitors, and cascaded H -bridge inverters (CHBI) constitute several multilevel converter topologies presently in use.…”

Section: Introductionmentioning

confidence: 99%

Novel single-phase five-level inverter utilizing digital counter control scheme

Nwosu

Umeogamba

Ogbuka

2017

Journal of Electrical Engineering

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A novel single-phase digital control circuit-based five level inverter (FLI) is presented in this paper. Based on the determined switching angle, one switching cycle of the inverter is divided into segments from which the switching sequence of the inverter switches is digitized. A programmed counter built around J − K flip flops with logic gates provided the needed switching signals for the H -bridge inverter. Proposed inverter is verified through simulation in a MATLAB/SIMULINK environment and simulation results are given. Simulation results show notable reduction in total harmonic distortion (THD) in the inverter output voltage and load current. With an RL load (of 200 Ω and 0.250 H), a single digit THD of 8.5 1% for the inverter load current is realized. Comparison of the novel control circuit-dependent FLI with the conventional and contemporary power-circuit-dependent cascaded H -bridge inverter (CHBI) show that the novel FLI is synthesized with lesser number of power circuit and control circuit components.

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Section: Introductionmentioning

confidence: 99%

Novel single-phase five-level inverter utilizing digital counter control scheme

Nwosu

Umeogamba

Ogbuka

2017

Journal of Electrical Engineering

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“…Three-level converters are widely adopted tools for high voltage applications [8], [9]. These converters use two series-connected capacitors to achieve total dc-link voltage.…”

Section: Introductionmentioning

confidence: 99%

Three-Level SEPIC with Improved Efficiency and Balanced Capacitor Voltages

Choi

Lee

2016

Journal of Power Electronics

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A single-ended primary-inductor converter (SEPIC) features low input current ripple and output voltage up/down capability. However, the switching devices in a two-level SEPIC suffer from high voltage stresses and switching losses. To cope with this drawback, this study proposes a three-level SEPIC that uses a low voltage-rated switch and thus achieves better switching performance compared with the two-level SEPIC. The three-level SEPIC can reduce switch voltage stresses and switching losses. The converter operation and control method are described in this work. The experimental results for a 500 W prototype converter are also discussed. Experimental results show that unlike the two-level SEPIC, the three-level SEPIC achieves improved power efficiency with balanced capacitor voltages.

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“…A great deal of work related to the multi-level converter topology, control schemes, and their applications has been done in the last ten years [15][16][17]. Mondal et al [18] extended the space voltage pulse width modulation (SVPWM) of the three-level inverter into the over-modulation region.…”

Section: Introductionmentioning

confidence: 99%

Optimal Switching Table-Based Sliding Mode Control of an Energy Recovery Li-Ion Power Accumulator Battery Pack Testing System

2013

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Abstract:The main objective of the present work is to apply a sliding mode controller (SMC) to medium voltage and high power output energy recovery Li-ion power accumulator battery pack testing systems (ERLPABTSs), which are composed of a three-level neutral-point-clamped (NPC) three-phase voltage source inverter (VSI) and a two-level buck-boost converter without an isolating transformer. An inner current decoupled control scheme for the aforementioned system is proposed and two sliding mode planes for active and reactive current control are designed based on the control scheme. An optimized switching table for current convergence is used according to the error sign of the equivalent input voltage and feedback voltage. The proposed ERLPABTS could be used to integrate discharging energy into the power grid when performing high accuracy current testing. The active and reactive power references for the grid-connected inverter are determined based on the discharging energy from the DC-DC converter. Simulations and experiments on a laboratory hardware platform using a 175 kW insulated gate bipolar transistor (IGBT)-based ERLPABTS have been implemented and verified, and the performance is found satisfactory and superior to conventional ERLPABPTS. OPEN ACCESSEnergies 2013, 6 5201 Keywords: energy recovery Li-ion power accumulator battery pack testing system (ERPALBPTS); neutral point clamped-voltage source inverter (NPC-VSI); sliding mode control (SMC)

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Three Phase Three-Level PWM Switched Voltage Source Inverter With Zero Neutral Point Potential

Cited by 28 publications

References 18 publications

Novel single-phase five-level inverter utilizing digital counter control scheme

Novel single-phase five-level inverter utilizing digital counter control scheme

Three-Level SEPIC with Improved Efficiency and Balanced Capacitor Voltages

Optimal Switching Table-Based Sliding Mode Control of an Energy Recovery Li-Ion Power Accumulator Battery Pack Testing System

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