Electronics > Beginners
my cook top hates my heatpump?
Jeroen3:
--- Quote from: inductive on October 30, 2019, 07:32:55 pm ---so. what you are saying is that the cooker "can" be internally connected to just ONE of the phases? (splitting one phase to the oven, and one to the induction top?). well. that could be. i don't know. might have to open it up to have a look
but the oven part is working flawless either way. its only the induction top that is having an issue
--- End quote ---
The oven is often on/off control. The induction heaters uses some kind of dimming circuits, I don't know the specifics of this. High THD screws with the cheap zero cross triggering circuits. There is no easy fix for this.
4kW inverter will definetely cause significant current harmonics, and the source impedance defines how much voltage harmonics you will get.
It's a very common problem when people use motor drives on generators without thinking ahead. Lots of other systems sources by the generator fail to work or get damaged. Or even worse, the generator regulation fails and burns everything.
Other option is indeed that the cooker is wired incorrectly, I think that is unlikely. Easy to inspect though.
inductive:
it came prewired from the factory.
so i doubt that it is. perhaps its just the combination of cooker vs heatpump. and replacing the cooker is the simple (yet expensive solution).
but there is no doubt in my mind the pump that causing the issue. and who knows what other electronics it can screw with
heres a pic of the wiring on the cooker. don't feel like tearing into it today.
the combined wattage of the oven/cooker is 10kw according to the sticker
JustMeHere:
--- Quote from: inductive on October 30, 2019, 04:43:23 pm ---one qick question, what would a normal voltage balance be?
L to Ground: 116,3
N to Ground: 144,7
L+N: 229,4
there are some variatons in voltage. but only 3-4 volts
--- End quote ---
In the US N-G should always be 0. N and G are connected in the panel. Note that 240V in the US can be HHG or HHNG. 120 is HNG
Monkeh:
--- Quote from: JustMeHere on October 30, 2019, 09:15:00 pm ---
--- Quote from: inductive on October 30, 2019, 04:43:23 pm ---one qick question, what would a normal voltage balance be?
L to Ground: 116,3
N to Ground: 144,7
L+N: 229,4
there are some variatons in voltage. but only 3-4 volts
--- End quote ---
In the US N-G should always be 0. N and G are connected in the panel. Note that 240V in the US can be HHG or HHNG. 120 is HNG
--- End quote ---
It's an IT system. Your assumptions do not hold.
noidea:
--- Quote from: inductive on October 30, 2019, 05:22:41 pm ---
--- Quote from: noidea on October 30, 2019, 04:49:51 pm ---If it is and the noise is only happening when the compressor in the heatpump is running then it most likely related to the active power factor correction circuit (V2R, V3R, V1T, L1R) section of the A1P board and not the power transistor module thats creating the three phase for the compressor.
--- End quote ---
the indoor unit is a EHVH16S26CB9W and the outdoor is: ERLQ016CAV3
and YES. it only happens when the compressor runs
--- End quote ---
Ta on the model number, the diagram I posted should be OK as a reference
Regarding the noise you hear on your PC when the compressor is running, is it a steady frequency noise or does it change as the compressor ramps up and down?
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