Questions tagged [igbt]

Insulated-gate bipolar transistor, voltage-driven power transistor with fast switching times

2
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4answers
56 views

Isolated Power Supplies for Inverter Gate Drivers

I am using a 3-Phase IPM IGBT Inverter Module in motor driver. This module has built-in gate drivers which require 4 Isolated power supplies for their operation. In all I have to design 5 Isolated ...
1
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0answers
32 views

Ringing issue in high-side IGBT connected transmission line

I am trying to charge a transmission line (Z0=4.4 ohms, propagation delay=1.4 ns) by a HV (1-1000 V, 600 mA) power supply through a 1700 V rated IGBT (S1). The charged transmission line gets ...
0
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0answers
23 views

Why Dspic304011 Controller's PWM stucks to 50% duty cycle when DC link Voltage is turned onn before the gate votlage turned onn in SPWM inverter.?

I have implemented SPWM inverter that take input from grid (230V AC) and convert this to DC link voltage 320V and this DC link voltage is converter to desire frequency. The gate driver IR2136 is used ...
0
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1answer
288 views

IGBT contactor design

I found this circuit in an older post. I was thinking about using this in place of a contactor to break under load. The load would be at 500V 300A DC. There would be overcurrent protection in line ...
0
votes
1answer
281 views

mazzilli zvs both igbt failure

I try to build mazzili zvs with 2 IGBT toshiba MG75Q2YS40 75A 1200v. For the each fast diode, I use 2 pieces DSEC60-06 A 600v 30A in series to get 1200v. for this, I use 2 power source: 12 volt for ...
2
votes
2answers
782 views

IGBT-based capacitor charge transfer and thyristor-based capacitor discharge

simulate this circuit – Schematic created using CircuitLab I am designing a circuit to provide a couple of strong and fast current pulses (~1000 A, more current is better, ~100 us, half-sine) ...
0
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3answers
380 views

Resistor values for a Voltage- Controlled Current Source Circuit

simulate this circuit – Schematic created using CircuitLab Hi Folks, During my bachelor thesis, I am learning IGBT gate driver cricuits. I am struggling with understanding the following ...
0
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1answer
39 views

Intelligent IGBT Module for Motor drive [closed]

I am looking for IGBT module for motor drive.. Approx. 50A, 1200V rating. 7 Pack module, Including Inverter + Brake circuit + Built-in drivers For this I have found a module and it's datasheet ...
1
vote
2answers
105 views

Three phase rectifier heatsink

I need to choose a heatsink and a fan for cooling a three phase rectifier. Let's say that the total power dissipation is 1.8kW and that the rectifier is made of three half bridge IGBT/diode modules ...
1
vote
1answer
80 views

high side driver failure

I am having 100% failure rate trying to get this high side driver to operate. The failure happens as soon as the 5v logic signal is turned on. I have had straight shorts from VDD to GND, and I have ...
0
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1answer
42 views

Zero Voltage in a power semiconductor chip

In an ON-mode silicon IGBT chip operating within a real power module, is the collector contact fixed at 0 V or emitter? What about Power SiC MOSFET? enter link description here
2
votes
2answers
717 views

IGBT transistor with auxiliary emitter

Recently I discovered, that some IGBT transistors in IGBT modules have the second pin for an emitter, called auxiliary emitter. In the picture above 2nd and 4th pins are auxiliary emitters. This is ...
1
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1answer
107 views

What causes random ringing in my inverter?

I'm currently redesigning the inverter for driving my induction heater. While I've sorted out most problems I encountered I'm still struggling with the actual inverter. Picture 1 shows the waveform ...
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0answers
103 views

inverter circuit

My inverter only produces about 8 volt output while the supply is as high as 20vdc, what's wrong with my inverter circuit ? ...
1
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1answer
52 views

TO-247 High Voltage pin clearance

I am using IXYH16N170CV1 IGBT's mounted at the edge of a PCB. The legs will be long and bent back to reach the heatsink shown in the image. This device is rated for 1700 V and 16 A. My nominal ...
0
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0answers
27 views

Temperature-dependent leakage current in IGBTs

On one hand, the leakage current of power electronics modules such as IGBTs depends on the temperature. On the other hand, the temperature distribution on the IGBT chips is significantly non-uniform ...
0
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2answers
3k views

IGBT vs. SCR rectifier

I simulated three phase rectifier using a thyristor like so: I get the expected result. But if I change the thyristors to IGBTs as shown below, it does not work. Why do these two circuits behave ...
0
votes
1answer
52 views

1A relay replace by IGBT

Is it possible to use IGBT to replace a relay , previous i use EV-200 (1A relay) to switch DC 600V 500A like the pic below Now i want to use IGBT to replace, but i have no idea about how it be just ...
0
votes
1answer
86 views

How to tell if an IGBT is latched or broken?

I recently bought an IXXH80N65B4 high voltage/current IGBT. I had it wired according to the circuit below, which is part of a coil gun. After successfully firing the gun twice, I used the same IGBT ...
1
vote
2answers
142 views

What limits the number of MOSFETs/IGBTs in Series / Parallel

I was looking at HVDC systems out of curiosity and I have a question that I have not exactly found an answer for. In HVDC converter, because of the high voltage (Tens/Hundreds of kV) they have to ...
0
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0answers
136 views

Simulate H Bridge in Pspice

I want to simulate an H-bridge in pspice but it doesn't work and Z3 and Z6 (High side and low side IGBTs) can not drive at the same time. Here is my schematic
2
votes
1answer
7k views

Bidirectional AC Switch with IGBTs

I came across a "IGBT Bi-directional Switch" on the web while looking for a solution to my problem of protecting a TRIAC/SSR from a short-circuit. Since TRIAC/SSR turn-off is not in my control, I'm ...
0
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0answers
34 views

IGBT Power Calculation in motor control application

My DC motor's nameplate says: VOLTS: 125 AMPS: 27A HP: 4 HP RPM: 5000 RPM DUTY: CONT. I chose this IGBT IKW50N60DTP to drive the motor with a PWM frequency of 5 kHz using a single-quadrant ...
-1
votes
1answer
123 views

Does the lack of a primary DC blocking capacitor cause my tesla coil driver to explode?

Lately I've been tinkering with an SSTC half-bridge driver. I've ran a couple of tests using relatively low input voltages ~50V and the IGBTS seemed to do fine, there was no noticeable heating at all. ...
3
votes
1answer
247 views

Choosing a suitable power supply for a MOSFET driver chip

I would like to use the TC4427 MOSFET driver chip, in order to switch the current through the IGBT AUIRG4PH50S, which will be placed in series with a resistive load. The power supply providing the ...
0
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3answers
57 views

Bipolar transistor. Unknown graphs

I read a course about power transistors and I encountered these graphs The chapter is talking about safe operation of BJT. Can anyone tell me what those graphs are ? (And how to read them).
1
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2answers
196 views

IGBT destroyed. Help me identify any potential problems

I am trying to build an inductive oven control (for temperatures up to 1500 C), that controls the temperature by turning on the the inductive oven on and off like a commercial inductive hotplate. ...
1
vote
1answer
159 views

What might be the reason for improper turn on of IGBT

Here I am applying 3-phase rectified dc to the non-isolated boost converter, the magnitude of applied voltage is 450V and desired o/p voltage is 475V. Switching frequency of PWM is 28k. I am using ...
0
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2answers
793 views

Why this pair of IGBT's died silently?

Before some days I have taken a look at circuit which controls AC current's frequency. That circuit was a VFD which looks like: simulate this circuit – Schematic created using CircuitLab But ...
1
vote
3answers
74 views

Question on current sensor sampling

I'm using this current sensor TLI4970-D050T4 located at the emitter leg of a power IGBT. This transistor is being switched at 10 kHz. How do I choose the convenient sampling frequency for the sensor? ...
0
votes
1answer
58 views

Question on the right PWM frequency for Permanent Magnet DC Motors

I know that there are some posts in this site about this question. I don't know if there's a way to find out the "ideal" PWM frequency for motor control. Usually they recommend to be safe in a range ...
1
vote
2answers
60 views

Collisions of Thermal Impedances

As shown in the picture below, thermal impedances of an IGBT device depends on the temperature. However, there is a strange phenomenon as follows. While with increasing the temperature, steady-state ...
1
vote
1answer
48 views

Is there an industry-wide name for anti-parallel diodes across an IGBT module's collector and emitter?

For example, this datasheet refers to a 'freewheeling' diode and a 'boost' diode. The upper diode is the freewheeling diode, right? If you wanted to switch an inductive load with a single such module,...
1
vote
1answer
86 views

IGBT and MOSFET for driving motor

I have a question that in motor driving application, by using power MOSFET, it must be in saturation region, is this right? And for IGBT, in which region it must be to act as a switching device?
0
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1answer
141 views

Maximum switching frequency

Is it possible to calculate maximum switching frequency of IGBT having only datasheet in hands? https://www.semikron.com/dl/service-support/downloads/download/semikron-datasheet-skm200gal173d-...
0
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1answer
38 views

HO defaults “On” on high side/low side driver

I have an application where I need to drive 2 piezoactuators in a push-pull arrangement (voltage 180deg out of phase with each other) where the charge/discharge time is about 50 microseconds and the ...
0
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1answer
51 views

Calculation of Vce from Ic-Vge Characteristic

We have found the Ic-Vge (collector current vs gate-emitter voltage) characteristic of an IGBT device as shown below at a high Vce (collector-emitter voltage) value (here 20V) from the datasheet (...
0
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1answer
52 views

Ic and Vce equations of IGBT

I know in IGBTs while operating, parameters Ic (collector current) and Vce (collector-emitter voltage) are Tj (junction temperature) and Vge (gate-emitter voltage) dependent. Is there anything else ...
1
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0answers
284 views

IGBT failure and protection

I have a 3-phase bridge rectifier (shown below). I am using an IGBT (STGE200NB60S) to limit the inrush current from the capacitors at start up. I also added the NTC thermisters to help with the inrush ...
0
votes
2answers
70 views

Ic-Vge IGBT Curve

In the figure below, presented in the manufacturer datasheet, you can see the Ic-Vge curve of an IGBT device. As mentioned, it has been drawn at Vce=20V. What does this equality mean? Can we have such ...
1
vote
1answer
1k views

How does carrier frequency and pulse width modulation in a VFD work together to control AC motor speed?

There is a lot of online information about this but there is also a lot of contradictory information. What is carrier frequency exactly and does it stay the same or does it vary? I understand the ...
2
votes
1answer
396 views

Is this the correct way to calculate IGBT power loss?

I am having trouble obtaining the power dissipation of IGBTs. It does not have a buit in diode and it isn't driving an inductive load. So I read in an application note that IGBT power losses are ...
1
vote
0answers
31 views

High Speed Piezoactuator Driver-Unexpected (Low) Voltage Output

I'm working on a project that requires charging and discharging a piezoactuator (150V, 1.5μF) extremely fast, IE total slew time allowed ~50μs (so somewhere around a 11A pulse). My background is in ...
0
votes
1answer
65 views

on-state voltage

I am trying to study an ever-on IGBT. in other words, IGBT is tried to be on in a long time. To this purpose, a +15V constant dc voltage is applied to the gate-emitter. But, when connecting a +2V ...
0
votes
1answer
90 views

How to find relationship between switching energy loss, temperature and current in an IGBT

I am calculating the losses of an inverter in Simulink. I used 'IGW25N120H3' IGBT for the inverter. In the datasheet, they have mentioned switching energy losses for 2 different temperatures and from ...
-1
votes
2answers
667 views

IGBT H-bridge failure

I am using Infineon's IGBT - IKW50N65H5 and IKW50N65F5 for a H-bridge inverter. The DC supply to the inverter is the line supply of 230VAC with KBPC5010's full wave rectification. The bridge was being ...
0
votes
1answer
253 views

Select bootstrap capacitor value too high

What happen if we choose bootstrap capacitor value too high in high side gate driver applications? Can it be harmful for MOSFET/IGBT or it is just not important?
0
votes
1answer
228 views

IRGB14C40L and MC33153

I want to drive a power ignition IGBT (IRGB14C40L), and for this a driver MC33153 has been chosen. I have several questions about my supposed schematics, shown below: 0) This design will (allegedly) ...
0
votes
2answers
90 views

IXDP 20N60B IGBT reversed biased conductive

I am using the IXDP 20N60B IGBT as an AC switch. This IGBT has no internal diode. When the Gate Emitter voltage is ~10V the device is on and conducts in the forward biased region as expected, shown ...
1
vote
2answers
698 views

How can an active rectifier block current?

This is a 2 part question for my understand about how an MOSFET/IGBT based active rectifier controls current. 1) Assuming a 3 phase active front end to a DC bus, and some huge load on the DC bus ...