Author Topic: Royer - Induction Heater  (Read 1726 times)

Offline Luke

  • High Voltage Enthusiast
  • *
  • Posts: 2
  • Karma: +0/-0
    • View Profile
Royer - Induction Heater
« on: April 16, 2017, 05:58:42 PM »
Hi,
I used she Schematic from kaizerpowerelectronics.dk.
My parts are:
2x IRFP260N 200V 49A
2x 470E 4W
2x Z-Diode 1,3W
2x BYV26E Si-Diode
2x 10kE
2x 2,2uF =4,4uF MKP 250V
2x 64uH, but only 5A

My circuit doesn’t work, I suppose it does not oscillate.
For the Power Supply I use two 3S LiPo serial -> 25,2VDC 135A constant (157A Burst), 3,4kVA.

To protect the circuit I use 40A car fuses.
I built several workingcoils the last has 7 turns of 6mm².

I think the chokes are to small.

Would it suffice to wind the ferrit cores with a bigger cable?
How should I switch the circuit on?

In the picture you see the first build-up with other transistors and the capacitors are located on the board.
In the last build-up the capacitors are located on the workingcoil.



Thanks,
Luke

Offline Mads Barnkob

  • Administrator
  • High Voltage Expert
  • *****
  • Posts: 1070
  • Karma: +16/-0
  • Denmark
    • View Profile
    • Kaizer Power Electronics
Re: Royer - Induction Heater
« Reply #1 on: April 17, 2017, 07:24:38 AM »
Hi Luke, welcome to the forum :)

Did you calculate the resonant frequency of your LC circuit, you did not write down all the parameters on the work coil, but I assume it is a helical coil, you could use my helical coil calculator and insert the tank capacitance too, to get the resonant frequency. http://kaizerpowerelectronics.dk/calculators/helical-coil-calculator/

You choice of components, perfboard etc is good enough for a small IH, but be aware that trying to conduct 10-20 A from the supply and hundreds of A in the resonant circuit is not going to end well with these small boards, good that you moved the capacitors to sit directly on the coil. Just be sure to mount them correctly for even current sharing, see here: http://kaizerpowerelectronics.dk/tesla-coils/drsstc-design-guide/dc-bus-capacitor/

Did you 40A fuse blow at any time? I think not, if you have a smaller one, like 20A try that instead, but a melting fuse is actually too slow to protect a MOSFET, they will explode before the fuse burns.

I do not think your chokes are too small for a small IH

Switching the circuit on is giving it full voltage from the start, ramping up the voltage can be fatal due to unknown state of the MOSFETs when the voltage gets below 10 VDC, there is a high risk of damaging the MOSFETs there.
http://www.kaizerpowerelectronics.dk - Tesla coils, high voltage, pulse power, audio and general electronics

Offline Luke

  • High Voltage Enthusiast
  • *
  • Posts: 2
  • Karma: +0/-0
    • View Profile
Re: Royer - Induction Heater
« Reply #2 on: April 17, 2017, 01:31:27 PM »
You are right, the fuses are too slow, in the last test one transistore exploded.
The result of the calculation is with 5 turns 81kHz and with 7 turns 65kHz.
Yes, the fuses blow anytime. Thereby I think the chokes are too small, because they got warm last time as the fuse broke.



« Last Edit: April 17, 2017, 01:35:13 PM by Luke »

Offline Mads Barnkob

  • Administrator
  • High Voltage Expert
  • *****
  • Posts: 1070
  • Karma: +16/-0
  • Denmark
    • View Profile
    • Kaizer Power Electronics
Re: Royer - Induction Heater
« Reply #3 on: April 18, 2017, 01:54:45 PM »
I can not see any errors from looking at your wiring compared to the schematic, but its not that easy to make it out with all those wires :)

Are your MOSFETs destroyed after fuse has blown and the chokes heat up? Did you measure the voltage of the battery pack drop below 10VAC when connected? I have not used batteries to feed a Royer IH with yet, but unless it is large car batteries, you could have problems with voltage drop due to too high load?

If the 3S LiPo is only two small batteries, then this is most likely your problem.
http://www.kaizerpowerelectronics.dk - Tesla coils, high voltage, pulse power, audio and general electronics

High Voltage Forum

Re: Royer - Induction Heater
« Reply #3 on: April 18, 2017, 01:54:45 PM »

 


* Recent Topics and Posts

post Re: You would think this would be easy to find.
[Spark gap Tesla coils]
thedoc298
August 17, 2019, 11:09:16 PM
post Re: You would think this would be easy to find.
[Spark gap Tesla coils]
thedoc298
August 17, 2019, 11:00:32 PM
post Re: You would think this would be easy to find.
[Spark gap Tesla coils]
Fumeaux
August 17, 2019, 09:44:07 PM
post You would think this would be easy to find.
[Spark gap Tesla coils]
thedoc298
August 17, 2019, 09:01:00 PM
post Re: Twin System Build
[Dual Resonant Solid State Tesla coils]
Mads Barnkob
August 17, 2019, 08:06:42 PM
post Re: Help for people buying the "12-48 Volt 1800/2500 Watt ZVS induction Heater"
[Electronic circuits]
Lane
August 17, 2019, 10:45:26 AM
post Re: Help for people buying the "12-48 Volt 1800/2500 Watt ZVS induction Heater"
[Electronic circuits]
Lane
August 17, 2019, 06:21:45 AM
post Re: My second DRSSTC
[Dual Resonant Solid State Tesla coils]
Hydron
August 17, 2019, 12:59:20 AM
post Re: Twin System Build
[Dual Resonant Solid State Tesla coils]
fnordest
August 17, 2019, 12:18:48 AM
post Re: Drsstc 3
[Dual Resonant Solid State Tesla coils]
Mads Barnkob
August 16, 2019, 10:34:46 PM
post Re: Teardown of Danfoss VLT6000 4kW Variable Frequency Drive
[Electronic circuits]
Mads Barnkob
August 16, 2019, 10:26:19 PM
post Re: My second DRSSTC
[Dual Resonant Solid State Tesla coils]
Mads Barnkob
August 16, 2019, 10:19:18 PM
post Re: [Development] Project of an SSTC driver.
[Solid state Tesla coils]
Mads Barnkob
August 16, 2019, 10:07:31 PM
post Re: Suitable capacitors and switches? 10kV
[Capacitor banks]
T3sl4co1l
August 16, 2019, 09:28:35 PM
post Re: Suitable capacitors and switches? 10kV
[Capacitor banks]
ElectroXa
August 16, 2019, 09:17:04 PM
post Re: ESAB Power TIG 200 Welder Teardown
[Electronic circuits]
T3sl4co1l
August 16, 2019, 09:14:36 PM
post ESAB Power TIG 200 Welder Teardown
[Electronic circuits]
Mads Barnkob
August 16, 2019, 08:03:18 PM
post Re: Help for people buying the "12-48 Volt 1800/2500 Watt ZVS induction Heater"
[Electronic circuits]
petespaco
August 16, 2019, 01:49:53 PM
post Suitable capacitors and switches? 10kV
[Capacitor banks]
MrFox
August 16, 2019, 12:21:36 PM
post Re: Help for people buying the "12-48 Volt 1800/2500 Watt ZVS induction Heater"
[Electronic circuits]
Lane
August 16, 2019, 11:22:45 AM
post Re: Small Phase change build R600a
[General chatting]
DashApple
August 15, 2019, 06:23:40 PM
post Re: Help for people buying the "12-48 Volt 1800/2500 Watt ZVS induction Heater"
[Electronic circuits]
rikkitikkitavi
August 15, 2019, 06:17:55 PM
post Re: Help for people buying the "12-48 Volt 1800/2500 Watt ZVS induction Heater"
[Electronic circuits]
Lane
August 15, 2019, 01:51:04 PM
post Re: Help for people buying the "12-48 Volt 1800/2500 Watt ZVS induction Heater"
[Electronic circuits]
petespaco
August 14, 2019, 07:05:57 PM
post Re: Help for people buying the "12-48 Volt 1800/2500 Watt ZVS induction Heater"
[Electronic circuits]
Bert911
August 14, 2019, 03:42:34 PM
post Re: Van de Graaf is leaking charge
[Static electricity]
Patric
August 14, 2019, 02:56:49 PM
post Re: Van de Graaf is leaking charge
[Static electricity]
ElectroXa
August 14, 2019, 01:42:21 PM
post Re: My second DRSSTC
[Dual Resonant Solid State Tesla coils]
erdal
August 14, 2019, 12:53:10 PM
post Van de Graaf is leaking charge
[Static electricity]
Patric
August 14, 2019, 09:22:21 AM
post Re: Drsstc 3
[Dual Resonant Solid State Tesla coils]
oneKone
August 14, 2019, 04:39:11 AM
post Re: MMC orientation and variac
[Spark gap Tesla coils]
thedoc298
August 13, 2019, 07:10:31 PM
post Re: MMC orientation and variac
[Spark gap Tesla coils]
MRMILSTAR
August 13, 2019, 05:17:23 AM
post MMC orientation and variac
[Spark gap Tesla coils]
thedoc298
August 12, 2019, 09:54:35 PM
post Re: My second DRSSTC
[Dual Resonant Solid State Tesla coils]
erdal
August 12, 2019, 08:40:16 PM
post Re: Small Phase change build R600a
[General chatting]
Hydron
August 12, 2019, 07:27:23 PM
post Re: Teardown of Danfoss VLT6000 4kW Variable Frequency Drive
[Electronic circuits]
klugesmith
August 12, 2019, 09:18:15 AM
post Re: Teardown of Danfoss VLT6000 4kW Variable Frequency Drive
[Electronic circuits]
shrad
August 12, 2019, 09:06:34 AM
post Re: Teardown of Danfoss VLT6000 4kW Variable Frequency Drive
[Electronic circuits]
klugesmith
August 12, 2019, 09:02:38 AM
post Re: A problem solved with hand tools
[General chatting]
klugesmith
August 12, 2019, 08:29:20 AM
post Re: Ebay [US]: MITSUBISHI CM300 1200V-300A IGBT (30$ a piece)
[Sell / Buy / Trade]
oneKone
August 12, 2019, 05:25:24 AM
post Re: Ebay [US]: MITSUBISHI CM300 1200V-300A IGBT (30$ a piece)
[Sell / Buy / Trade]
acobaugh
August 10, 2019, 08:14:35 PM
post Re: 30% power increase
[Spark gap Tesla coils]
MRMILSTAR
August 08, 2019, 04:18:09 PM
post Re: "LightningStorm" VTTC project
[Vacuum tube Tesla coils]
Bambinz
August 08, 2019, 01:15:11 PM
post Re: Twin System Build
[Dual Resonant Solid State Tesla coils]
Bambinz
August 08, 2019, 12:15:26 PM
post Re: My second DRSSTC
[Dual Resonant Solid State Tesla coils]
Bambinz
August 08, 2019, 11:58:47 AM
post Re: [Development] Project of an SSTC driver.
[Solid state Tesla coils]
Bambinz
August 08, 2019, 11:56:51 AM
post Re: Next Gen DRSSTC
[Dual Resonant Solid State Tesla coils]
Netzpfuscher
August 08, 2019, 10:04:39 AM
post Re: My second DRSSTC
[Dual Resonant Solid State Tesla coils]
Mads Barnkob
August 08, 2019, 08:35:57 AM
post Re: 30% power increase
[Spark gap Tesla coils]
Mads Barnkob
August 08, 2019, 08:33:01 AM
post Re: Using R/C motors as 3 phase generators.
[General chatting]
Patrick
August 07, 2019, 09:16:57 PM

Sitemap 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30