I'm glad you commented at least that pushing back current into the grid could harm people elsewhere on your circuit/home/house/street. See two reasons for the occasionally overload: At first the idle voltage of hondas is typical well over the standard. My 22i for instance lingers around 243V. So this is slightly more than the grids voltage, thus the generator tries to push the grid by himself. *haha* As you commented already the high current/low impedance by your local circuit overlads the gen instantly. While the grid voltage swings to up and down, that overload comes and goes every couple of seconds. That could be minimized by lowering the the gens output voltage just a bit under the actual grids voltage. But voltage regulator within the gen tries just the opposite: when the voltage (externally) goes down a bit, it instantly tries to rise the voltage again. The second reason is that not only the grid frequency swings too (for known reasons as of regulating the whole continental zone) the freq does have little jumps and steps in its phase, too. Caused by events of switching huge loads onto or off the grid elsewhere in the regulating zone. A self-regulating gen (~in isle mode) would slowly swing around the target of 50Hz, for instance, producing no instantly jumps. So unconditional small hops in the phase, enforced by the external grid, brings the gen instantly unto its limits, too - while its trying to resync (follow that phase jumps). Thats why the load on the gen flips fast too. The grid by its nature is very low impedance "device". The gen by itself is a low-impedance device too, to deliver electrical energy. So there are two devices fighting against each other. :D
Excellent video. The Honda controller when the engine starts will first look to see if there is already a voltage before outputting. If there isn't, it will simply output.. If there is a voltage already there, it will attempt to match voltage and frequency than start outputting. Just means you can parallel with any inverter style generator. I've always wanted to try my solar inverter and generator together to see if the solar can take most of the load. Thanks for a great video..
You're welcome. Just note I wasn't game to try and force a sync with both sources already live. But yeah you can connect any light loaded external source then disconnect it to seamlessly move the load over to the gen.
@@davidgladwell5582 I wouldn't try it.. I connected 2 EU22i generators after they were both started and they did not like it.. They only sync when they are first turned on.. If you connect them after they've checked the lines for voltage, they make their own voltage and frequency.. If you connect it afterward, it really jumps and jerks the engine for a second before immediately overloading.
That is an interesting test box that you have it almost makes me more interested in it than the generator paralleling which is also pretty cool as I have wondered this for a long time but don't have one to try
It wasn't made for this test specifically. Just a 240V to 24V transformer to power the contactor and a foot switch to control the 24V to the contactor coil.
Inverter or not, Honda's inverters in the EU series are specific to having an AC voltage applied when the inverter itself isn't outputting, so it can syncronise with the existing line voltage upon itself outputting. Any other generator will end up with an output of magic smoke. Even if you syncronised a traditional generator by means of the close parallel when the lamp is out method, the standard inverter of a non-EU series will drift out of sync and blow.
Okay so you might not like your wife but what happens when your kid or somebody else's kid or an unknowing bystander trips on the cord and unplugs it and thinks it's going to be dead on the prongs? I have been researching paralleling kits and Generator paralleling and I see why Honda has always used those weird connectors of course it also helps that it makes it somewhat proprietary to some extent.
I'm glad you commented at least that pushing back current into the grid could harm people elsewhere on your circuit/home/house/street.
See two reasons for the occasionally overload: At first the idle voltage of hondas is typical well over the standard. My 22i for instance lingers around 243V. So this is slightly more than the grids voltage, thus the generator tries to push the grid by himself. *haha* As you commented already the high current/low impedance by your local circuit overlads the gen instantly. While the grid voltage swings to up and down, that overload comes and goes every couple of seconds. That could be minimized by lowering the the gens output voltage just a bit under the actual grids voltage. But voltage regulator within the gen tries just the opposite: when the voltage (externally) goes down a bit, it instantly tries to rise the voltage again.
The second reason is that not only the grid frequency swings too (for known reasons as of regulating the whole continental zone) the freq does have little jumps and steps in its phase, too. Caused by events of switching huge loads onto or off the grid elsewhere in the regulating zone. A self-regulating gen (~in isle mode) would slowly swing around the target of 50Hz, for instance, producing no instantly jumps. So unconditional small hops in the phase, enforced by the external grid, brings the gen instantly unto its limits, too - while its trying to resync (follow that phase jumps). Thats why the load on the gen flips fast too.
The grid by its nature is very low impedance "device". The gen by itself is a low-impedance device too, to deliver electrical energy. So there are two devices fighting against each other. :D
Excellent video. The Honda controller when the engine starts will first look to see if there is already a voltage before outputting. If there isn't, it will simply output.. If there is a voltage already there, it will attempt to match voltage and frequency than start outputting. Just means you can parallel with any inverter style generator. I've always wanted to try my solar inverter and generator together to see if the solar can take most of the load. Thanks for a great video..
You're welcome. Just note I wasn't game to try and force a sync with both sources already live. But yeah you can connect any light loaded external source then disconnect it to seamlessly move the load over to the gen.
@@davidgladwell5582 I wouldn't try it.. I connected 2 EU22i generators after they were both started and they did not like it.. They only sync when they are first turned on.. If you connect them after they've checked the lines for voltage, they make their own voltage and frequency.. If you connect it afterward, it really jumps and jerks the engine for a second before immediately overloading.
Very interesting video, thanks for sharing!
That is an interesting test box that you have it almost makes me more interested in it than the generator paralleling which is also pretty cool as I have wondered this for a long time but don't have one to try
It wasn't made for this test specifically. Just a 240V to 24V transformer to power the contactor and a foot switch to control the 24V to the contactor coil.
Can’t do it with just any old genset though
Inverter or not, Honda's inverters in the EU series are specific to having an AC voltage applied when the inverter itself isn't outputting, so it can syncronise with the existing line voltage upon itself outputting.
Any other generator will end up with an output of magic smoke. Even if you syncronised a traditional generator by means of the close parallel when the lamp is out method, the standard inverter of a non-EU series will drift out of sync and blow.
Seriously dude.
Okay so you might not like your wife but what happens when your kid or somebody else's kid or an unknowing bystander trips on the cord and unplugs it and thinks it's going to be dead on the prongs?
I have been researching paralleling kits and Generator paralleling and I see why Honda has always used those weird connectors of course it also helps that it makes it somewhat proprietary to some extent.
Safety bananas are great!
This is the dead-set most pointless video. You’d have to be a Kiwi.
Not necessarily if you want to move light loading to gen only without interruption.