Gate Unit With Improved Short-Circuit Detection and Turn-Off Capability for 4.5-kV Press-Pack IGBTs Operated at 4-kA Pulse Current

Gerber, Dominic; Guillod, Thomas; Leutwyler, R.; Biela, J.

doi:10.1109/tps.2013.2280379

Cited by 38 publications

(19 citation statements)

References 10 publications

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“…As the load voltage is very small, namely V 0V, in the reverse flywheel current of IGBT, and (5) are approximately identical. The reason is that the current frequency is very low in the IGBT reverse flywheel current, so (10) and (5) are approximately equal.…”

Section: B Experimental Results Of Igbt Reverse Flywheelmentioning

confidence: 99%

“…At present, IGBT collector current is detected in three primary ways as following [9]: 1) Using extra detecting elements method such as sensor, transformer, PCB Rogowski coil [10] and magneto-resistive sensor to detect the collector current [11] . But they will lead to the structure complexity and increasing size of the power electronic converter, especially for the converter with a laminated bus-bar structure, and so they are generally unavailable.…”

Section: Introductionmentioning

confidence: 99%

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On-line measuring method of high-power IGBT collector current

Sun

Chen

et al. 2014

2014 17th International Conference on Electrical Machines and Systems (ICEMS)

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The on-line measurement of the high-power IGBT collector current is important to the hierarchical control and short-circuit and overcurrent protection of its driver and the sensorless control of the converter. The conventional on-line measurement methods for IGBT collector current are not suitable for engineering measurement such devices as the large-size, highcost, low-efficiency sensor, current transformer or divider, etc. Based on the gate driver, the paper uses a resistance capacity circuit paralleled with the IGBT power emitter and auxiliary emitter terminals to fulfil the IGBT collector current on-line estimation by measuring the capacity voltage. The theoretical analysis verifies the feasibility of this method. However, the very small resistance of IGBT power emitter leads to the narrow bandwidth of the estimated current. The improved method is adopted to increase the accuracy of current estimation and solve the problem of narrow bandwidth existing in the high-power IGBT steady-state collector current. The simulation and experiment results prove the method to feasible and effective.Hu Liangdeng was born in Xiangtan City of Hunan Province in 1986. He received the B.S. and M.S. degree in electrical engineering from NUE, Wuhan, China, in 2008 and 2010, respectively. He is currently working toward the Ph.D. degree.His researches are currently focused on medium-high voltage and large-capacity power electronic converter technology as well as high power IGBT digital gate drive technology.

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Section: B Experimental Results Of Igbt Reverse Flywheelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

On-line measuring method of high-power IGBT collector current

Sun

Chen

et al. 2014

2014 17th International Conference on Electrical Machines and Systems (ICEMS)

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“…In order to use semiconductor switches without series or parallel connection, the chosen primary voltage level is v p = 3 kV, resulting in a total primary current of i p,ges =8000 A. The considered switching units are 4.5 kV-1200 A-IGBT modules [4], which are operated with a pulse current of i p,mod = 8 kA/4 = 2 kA. The 4 active bouncer modules are connected in series to the main capacitor bank.…”

Section: Modulator Conceptmentioning

confidence: 99%

Design procedure of an active bouncer for an ultra precise long pulse solid state modulator

Blume

Biela

2013

2013 19th IEEE Pulsed Power Conference (PPC)

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Long pulse modulator systems like the electronpositron compact linear collider (CLIC) with a pulse length of 140 µs require a bouncer for voltage drop compensation. In this paper, an active bouncer system, consisting of four bouncer modules, in series to the main capacitor bank, is investigated. The system's transfer function including the matrix pulse transformer is analysed and the output voltage ripple induced by the bouncer system is designed to be smaller than 5 ppm due to demanding repeatability requirement of CLIC. Based on a loss analysis is conducted resulting in a total bouncer system volume of 52 dm 3 and a reduction in the global efficiency (grid to klystron) of the modulator system of only 0.45 %.

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“…A fast protection function for IGBT modules was recently proposed by an evaluation of the fault current value through the di/dt feedback signal which is based on the voltage across the parasitic inductance between the Kelvin emitter and the power emitter of an IGBT module [9], [10]. In [11], a fault current detection using a printed circuit board Rogowski coil is used in a gate driver to protect 4.5 kV press-pack IGBTs operated at 4 kA of pulse current. Detection circuits using the turn-on switching characteristic to protect IGBTs under short-circuit failures are represented in [12]- [15].…”

Section: Introductionmentioning

confidence: 99%

Short-circuit Protection for the Series-Connected Switches in High Voltage Applications

Vo¹,

Choi²,

Lee³

2016

Journal of Power Electronics

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This paper presents the development of a short-circuit protection mechanism on a high voltage switch (HVS) board which is built by a series connection of semiconductor switches. The HVS board is able to quickly detect and limit the peak fault current before the signal board triggers off a gate signal. Voltage clamping techniques are used to safely turn off the short-circuit current and to prevent overvoltage of the series-connected switches. The selection method of the main devices and the development of the HVS board are described in detail. Experimental results have demonstrated that the HVS board is capable of withstanding a short-circuit current at a rated voltage of 10kV without a di/dt slowing down inductor. The corresponding short-circuit current is restricted to 125 A within 100 ns and can safely turn off within 120 ns.

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Gate Unit With Improved Short-Circuit Detection and Turn-Off Capability for 4.5-kV Press-Pack IGBTs Operated at 4-kA Pulse Current

Cited by 38 publications

References 10 publications

On-line measuring method of high-power IGBT collector current

On-line measuring method of high-power IGBT collector current

Design procedure of an active bouncer for an ultra precise long pulse solid state modulator

Short-circuit Protection for the Series-Connected Switches in High Voltage Applications

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