Active voltage balancing of DC-link electrolytic capacitors

Ertl, H.; Wiesinger, Thomas; Kolar, Johann W.

doi:10.1049/iet-pel:20070390

Cited by 25 publications

(9 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…develop variable DC bus to support 45KW load with short circuit, high/Low voltage and high current protection. and the Product should meet industry reliability standard (EFT/Surge) [13].…”

Section: Problem Statementmentioning

confidence: 99%

Development of New Variable Drive for DC bus load using ORCAD Software

Loganathan¹,

Stonier²,

Maheswari³

2021

Proceedings of the First International Conference on Combinatorial and Optimization, ICCAP 2021, December 7-8 2021, Chennai, In

View full text Add to dashboard Cite

This paper represents the various application using variable frequency drive like renewable energy sources such as control of solar, fuel cells etc. Here the DC is not consistent with these inputs and tends to differ and can cause disruptions to load. The AC to DC rectification process is done there are two types of rectification but here we use only uncontrolled rectification is preferred, since the controlled has some disadvantages like triggering, and it cannot used for higher frequencies. The requirement here is the source of the variable DC, so the source of the variable DC is obtained from varying the AC source. And the DC obtained distorted in the DC capacitor link. And sensing the DC bus is important to prevent the overcurrent and overvoltage damage of overall circuitry for sensing of DC bus current and voltage values, here isolated amplifiers are used. Major part of development of variable DC bus is Selection of the components like Rectifier, configuration of DC link Capacitors with Pre-charging circuit and the balancing resistors. The MATLAB and ORCAD models have been designed for 45kW load and the input is varying AC voltage range from (415V-600V) and the output obtained is varying DC maximum of 1000V and the simulation result is validated in the proposed system.

show abstract

“…develop variable DC bus to support 45KW load with short circuit, high/Low voltage and high current protection. and the Product should meet industry reliability standard (EFT/Surge) [13].…”

Section: Problem Statementmentioning

confidence: 99%

Development of New Variable Drive for DC bus load using ORCAD Software

Loganathan¹,

Stonier²,

Maheswari³

2021

Proceedings of the First International Conference on Combinatorial and Optimization, ICCAP 2021, December 7-8 2021, Chennai, In

View full text Add to dashboard Cite

show abstract

“…Other applications, like inverters with series-connected DC bus capacitors [21]- [23] and battery management systems [10], [24], [25], encounter similar unbalance issues due to leakage currents. However, since the leakage currents are orders of magnitude smaller than the unbalance currents encountered in b-DCDN, the proposed solutions are designed for low currents and consequently not applicable in b-DCDN.…”

Section: B Solutions To Reduce Voltage Unbalancementioning

confidence: 99%

Analysis of three-level converters with voltage balancing capability in bipolar DC distribution networks

Broeck

Breucker²,

Beerten

et al. 2017

2017 IEEE Second International Conference on DC Microgrids (ICDCM)

View full text Add to dashboard Cite

The growing number of distributed energy resources, DC loads and energy storage systems drive the adoption of DC distribution networks. This paper in particular addresses three-wire bipolar DC distribution networks (b-DCDN), that provide two voltage levels to connect low-and high-power loads, while transferring twice the amount of power with less conduction losses as compared to the two-wire unipolar network configuration. To stabilize and control these two voltage levels, converters with voltage balancing capability are essential. Although dedicated voltage balancing converters that transfer power between both poles exist, this paper shows the extent to which certain three-level DC-DC converters can both interface DC devices such as battery energy storage systems and balance the pole-toneutral voltages in the presence of unbalanced currents. More in particular, this paper identifies and analyzes the members of the non-isolated three-level converter family that feature a bipolar DC front-end in different unbalanced conditions, thereby explicitly deriving the operating area of these converters, based upon a decomposition in balanced and unbalanced components. Furthermore, the paper demonstrates the influence of the modulation scheme in unbalanced conditions on the current ripple and required inductance.

show abstract

“…16): a linear regulator, realized with 12 bipolar transistors (FCX605TA) connected in series [42], supplies the IRS27951 selfoscillating IC of the MV side auxiliary power supply The linear regulator, implemented as a series connection of bipolar transistors, [42], provides the initial power and is turned off when the 15 V buck converter provides its regulated output voltage.…”

Section: B Startupmentioning

confidence: 99%

Comprehensive Conceptualization, Design, and Experimental Verification of a Weight-Optimized All-SiC 2 kV/700 V DAB for an Airborne Wind Turbine

Gammeter

Krismer

Kolar

2016

IEEE J. Emerg. Sel. Topics Power Electron.

View full text Add to dashboard Cite

This paper details the design, the implementation, and the experimental verification of a minimum weight input series output parallel (ISOP) structured Dual Active Bridge (DAB) converter for an Airborne Wind Turbine (AWT) system. The main power components of the DAB converter, in particular the bridge circuits, the actively cooled high frequency (HF) transformer and inductor, and the cooling system, which largely contribute to the total system weight, are designed and realized based on multi-objective considerations, i.e. with respect to weight and efficiency. Furthermore, the design includes all necessary considerations to realize a fully functional prototype, i.e. it also considers the auxiliary supply, the control for stable operation of the system, which also comprises an input filter, over the specified operating range, and the startup and shut down procedure. These considerations show the complex interactions of the various system parts and reveal that a comprehensive conceptualization is necessary to arrive at a reliable minimum weight design. Experimental results validate the proposed design procedure for a realized lightweight DAB hardware prototype with a rated power of 6.25 kW. The prototype weighs 1.46 kg, i.e. features a power to weight ratio of 4.28 kW/kg (1.94 kW/lb), and achieves a maximum full-load efficiency of 97.5 %.

show abstract

Active voltage balancing of DC-link electrolytic capacitors

Cited by 25 publications

References 24 publications

Development of New Variable Drive for DC bus load using ORCAD Software

Development of New Variable Drive for DC bus load using ORCAD Software

Analysis of three-level converters with voltage balancing capability in bipolar DC distribution networks

Comprehensive Conceptualization, Design, and Experimental Verification of a Weight-Optimized All-SiC 2 kV/700 V DAB for an Airborne Wind Turbine

Contact Info

Product

Resources

About