Hello all.
I am stumped on what to do next with my solar system and getting it to charge my MYP.
I have a 12V 300Ah Li Battery being charged by 2kW of solar, and 12V to 240V single phase Pure sinewave inverter. I'm running the Inverter through a transformer to create a split rail 120V-N-120V to give me L1 and L2 240V. I've put the scope on the inverter output and see the waveform, and checked the transformer outputs, and all seems good.
When i connect my wife's Ford mobile charger for her Mach E to this solar system, and connect to her car, all is fine and her car starts charging with no error messages.
When i connect the tesla UMC to the same power system (that works with the Ford) and plug in to my Tesla that's when things go wrong. The MYP sees the 230-240V. I've reduce the charge current to 5A just to make sure I'm not maxing anything out. The UMC relays are engaging but the car does not start to charge at all. I've connected the UMC to my home power supply to make sure the UMC is working. it works on the 110V and the 230V supplies in the home.
I've tried neutral/Ground bonding on the output of the inverter (the input to the transformer) and this makes no difference to the UMC or Ford charger operation.
I've purchased a second charger that is not a tesla charger to see if the UMC is the issue and the same thing occurs with that other charger when connecting to the Tesla from the solar system. The car sees the 240V system but won't charge. When i put this other charger into an outlet of my home, the MYP sees it and starts charging at the max charge level i've set. This other charger works fine with the Mach E also from the solar system and also from my home.
The upshot of all this is that my tesla doesn't seem to be able to charge from my solar system with any type of charger, but the Mach E can. I've tried simulating the grounding my home has, and made sure the system is doing what i think my home is doing. I've tried everything i can think off and done quite a bit of research, but just can't see to solve this.
Has anyone else has an issue with their UMC's not working on Solar but ok on their home power system?
Thanks in advance.
I am stumped on what to do next with my solar system and getting it to charge my MYP.
I have a 12V 300Ah Li Battery being charged by 2kW of solar, and 12V to 240V single phase Pure sinewave inverter. I'm running the Inverter through a transformer to create a split rail 120V-N-120V to give me L1 and L2 240V. I've put the scope on the inverter output and see the waveform, and checked the transformer outputs, and all seems good.
When i connect my wife's Ford mobile charger for her Mach E to this solar system, and connect to her car, all is fine and her car starts charging with no error messages.
When i connect the tesla UMC to the same power system (that works with the Ford) and plug in to my Tesla that's when things go wrong. The MYP sees the 230-240V. I've reduce the charge current to 5A just to make sure I'm not maxing anything out. The UMC relays are engaging but the car does not start to charge at all. I've connected the UMC to my home power supply to make sure the UMC is working. it works on the 110V and the 230V supplies in the home.
I've tried neutral/Ground bonding on the output of the inverter (the input to the transformer) and this makes no difference to the UMC or Ford charger operation.
I've purchased a second charger that is not a tesla charger to see if the UMC is the issue and the same thing occurs with that other charger when connecting to the Tesla from the solar system. The car sees the 240V system but won't charge. When i put this other charger into an outlet of my home, the MYP sees it and starts charging at the max charge level i've set. This other charger works fine with the Mach E also from the solar system and also from my home.
The upshot of all this is that my tesla doesn't seem to be able to charge from my solar system with any type of charger, but the Mach E can. I've tried simulating the grounding my home has, and made sure the system is doing what i think my home is doing. I've tried everything i can think off and done quite a bit of research, but just can't see to solve this.
Has anyone else has an issue with their UMC's not working on Solar but ok on their home power system?
Thanks in advance.