The Current Sharing Optimization of Paralleled IGBTs in a Power Module Tile Using a PSpice Frequency Dependent Impedance Model

Azar, R.; Udrea, Radu Mihnea; Ng, Wai Tung; Dawson, F.P.; Findlay, W.; Waind, P.

doi:10.1109/tpel.2007.909182

Cited by 34 publications

(13 citation statements)

References 6 publications

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“…Requirement for current sharing was determined to be within 15%, not a very strict requirement. Due to the complexities of digital control and utilized digital feedback loop compensation, previously published current sharing schemes [2,4,6,7] were not deemed practical, due to the implications on project timing and risk assessment. Based on the previous work with interleaved topologies [5,8] it was decided that a simpler approach is analyzed -a possibility of driving both inverters with identical drive signals and adding series inductors in line with the two paralleled inverters.…”

Section: Requirementsmentioning

confidence: 99%

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Optimization of current sharing between two inverter bridges by iterative simulations

Sasic¹,

Živanov

Lazić³

2012

2012 15th International Power Electronics and Motion Control Conference (EPE/PEMC)

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Two full-bridge inverters are connected in parallel in order to increase power of a programmable AC source. Lossless current sharing by adding balancing inductors was investigated. Effects of IGBT parameter tolerances and temperature variations were analysed. It was found that manufacturing tolerances of balancing inductors have greater effect on the current sharing than IGBT parameter variations. Adding the inductors in series with both power rails, positive and negative, of the bridges reduces required inductance and improves current sharing. Results of the analysis will be used to build an experimental circuit.

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Section: Requirementsmentioning

confidence: 99%

“…Major project constraints were identified as (1) fast, low risk development, (2) accurate prediction of final costs and (3) predetermined form factor (unchanged footprint, twice the height of the old system).…”

Section: Introductionmentioning

confidence: 99%

Optimization of current sharing between two inverter bridges by iterative simulations

Sasic¹,

Živanov

Lazić³

2012

2012 15th International Power Electronics and Motion Control Conference (EPE/PEMC)

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“…Thus, the collector-emitter voltage in the saturation V CE(sat) is an increasing function of T j according to Eq. (4)- (5).…”

Section: A Static Characteristic Parametersmentioning

confidence: 99%

Current sharing of IGBT modules in parallel with thermal imbalance

Wang

Zhengming

Yuan

2010

2010 IEEE Energy Conversion Congress and Exposition

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For large current, switching devices such as MOSFET and IGBT, often have to be connected in parallel. Due to this reason, derating and preselection of the switching devices become necessary to develop high-power converters. The current imbalance can be produced by stray inductances, device characteristic difference or asymmetric circuit. Moreover, thermal imbalance is anther important reason for current balancing. The static and transient characteristics of an IGBT vary sensitively with its junction temperature. This paper focuses on the current sharing of IGBTs in parallel with thermal imbalance. In this paper, an active gate control method which can achieve current balancing of the IGBTs in parallel with thermal imbalance, is explained and verified by experiments. This method can be applied to an actual 160kW/380V power electronics converter prototype for improving the utilization of the switching devices and enhancing system reliability.

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“…In this regard, activities that deal with this issue are focused on two different areas. One area deals with issues related to the combination of multiple IGBT chips (or IGBT dies) in parallel inside an IGBT module and their sharing of the same substrate [4]- [7]. The second area of activity focuses on issues related to the parallel interconnection of IGBTs integrated in different substrates, as in the case of the interconnections of IGBT modules [8], [9] and discrete IGBTs [10].…”

Section: Introductionmentioning

confidence: 99%

Current Sharing Control Strategy for IGBTs Connected in Parallel

Pérez-Delgado¹,

Quesada²,

Román-Lumbreras³

2016

Journal of Power Electronics

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This work focuses on current sharing between punch-through insulated gate bipolar transistors (IGBTs) connected in parallel and evaluates the mechanisms that allow overall current balancing. Two different control strategies are presented. These strategies are based on the modification of transistor gate-emitter control voltage V GE by using an active gate driver circuit. The first strategy relies on the calculation of the average value of the current flowing through all parallel-connected IGBTs. The second strategy is proposed by the authors on the basis of a current cross reference control scheme. Finally, the simulation and experimental results of the application of the two current sharing control algorithms are presented.

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The Current Sharing Optimization of Paralleled IGBTs in a Power Module Tile Using a PSpice Frequency Dependent Impedance Model

Cited by 34 publications

References 6 publications

Optimization of current sharing between two inverter bridges by iterative simulations

Optimization of current sharing between two inverter bridges by iterative simulations

Current sharing of IGBT modules in parallel with thermal imbalance

Current Sharing Control Strategy for IGBTs Connected in Parallel

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