Questions tagged [igbt]

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

Filter by
Sorted by
Tagged with
1
vote
2answers
241 views

Is it possible to make an IGBT to work at duty cycles up to 100%?

I am designing an IGBT based chopper with single Low side switching IGBT (chosen low side switching because ease of driving the IGBT.) There are plenty of resources available for SMPS (buck, boost, ...
0
votes
2answers
884 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 ...
2
votes
2answers
858 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
votes
3answers
414 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
votes
0answers
39 views

H bridge circuit using FAN7392

YELLOW- LOW IN RED - HI IN BLUE - LOW SIDE OUTPUT GREEN - HIGH SIDE OUTPUT I have designed a H bridge circuit using FAN7392 & 25N120NDH IGBT. The voltage I want to switch for now is 24 volt ...
1
vote
3answers
45 views

IGBT Gate driver sink or source current

I will drive a load low side with IGBT. IGBT gate-emiter (Threshold) voltage will be 12 V. This voltage level is enough for my load current. I will use a gate driver. When ı search gate driver for ...
1
vote
1answer
48 views

When IGBT is off what is the leakage current between collector and emiter?

When ı saw datasheet of IGBT, there are two terms of about leakage current between collecter and emiter. But ı can not be sure is these terms are about leakage current? These terms are Ices and ...
1
vote
1answer
50 views

DC Chopper Operation in SMES Design

I'm reading a paper on a superconducting magnetic energy storage (SMES) power control system. One large superconducting inductor (L1 in the figure below) is charged up by a 10kA power supply. Once ...
1
vote
3answers
94 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? ...
4
votes
2answers
75 views

n Gate to source capacitor in gate drive?

I'm designing a gate drive and I saw in a reference design this circuit, what would be the explanation for placing a capacitor between gate-source of the MOSFET (or IGBT)? I've read that a resistor is ...
2
votes
2answers
195 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
votes
0answers
11 views

Infineon IPOSIM tool for IGBT thermal loss calculations

I used the infineon IPOSIM power tool for simulating a motor drive for my required conditions and got the results for a custom input drive cycle. The results were given as power dissipation per IGBT(...
1
vote
1answer
29 views

Can a 3 phase IGBT based front end converter work without line reactor?

I have been working on developing a 3 phase active power filter, which has a 3 phase IGBT bidirectional converter. I have been able to develop APFC (Active Power Filter Converter) with the line ...
0
votes
0answers
37 views

IGBT confusion with determining Ic

For this IGBT I-V curve say I have a Vge of 10V and no biasing resistor on the collector with 5 Volts being supplied by some supply providing up to x watts. According to this I-V curve this should be ...
1
vote
1answer
105 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 ...
2
votes
4answers
64 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
vote
0answers
40 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
votes
0answers
26 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 ...
1
vote
1answer
365 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
295 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 ...
0
votes
1answer
47 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
120 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 ...
0
votes
1answer
45 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
734 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
vote
1answer
124 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 ...
0
votes
0answers
123 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
vote
1answer
65 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
votes
0answers
29 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
votes
2answers
4k 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
67 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
104 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 ...
0
votes
0answers
177 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
votes
0answers
37 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
149 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
333 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
votes
3answers
66 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
vote
2answers
219 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
177 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
votes
1answer
65 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
52 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
95 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
votes
1answer
158 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
votes
1answer
47 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
votes
1answer
55 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
votes
1answer
81 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
vote
0answers
319 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
81 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 ...