Thanks
The key point is that 3kw EV chargers are relatively big and bulky and there will be loads of scrap if its not done properly….not just by individual outfits acting alone and failing to share secrets on longlife design etc. They are simple enough to be open to a government initiative…obviously the work would be done by engineers in engineering companies….but all would be payed bonus’s depending on each others work’s success’s..to encourage teamwork.
Governements in the West are currently very much involved in running industry…but secretly as follows…
In USA, all the big semicons are known, behind the scenes, to be in bed with each other…the USA Government enforces this (albeit secretly)…because the success of all the American semicons, is crucial to the success of the American military machine.
China of course is another example…the worlds biggest exporter by volume….and a truly amazing rate of advancement in technology in a short time….all Chinese co’s are owned by the Chinese Government…and with a network of UK middle men that they have cultivated in UK for example, they have pretty much dismantled loads of the UK electronics industry..nobody can say for sure thats what they meant to do..but thats what happened.....amazing operators.
Germany is the model country......where the German government secretly forces the German competitor companys to teamwork with each other….The great German car companies, BMW, Mercedes, Audi, Volkswagen….are all just one company in reality…sharing trade secrets with each other……by teamworking together their individual strengths are greater. The German government put “mixer staff” into these car companies, to make sure that trade secrets are shared…they also encourage BMW engineers to leave and go to Mercedes etc…part of the knowledge sharing….and look how effective this is.
When the government fails to get involved, the following can happen…
Recently, the UK government invested huge amounts of money into producing smart meters for domestic and industrial energy useage in UK (charging for electricity)……the contracts to build the small offline power supplies for the smart meters were spread around about five companies based in UK…none of these companies were actually British owned. These 5 companies worked totally in isolation from each other, and did not share secrets on their work with each other…neither did they check each others work…as a result, there were many incidences of huge amounts of products having to be recalled because either they were electrically unsafe, or the transient protection had a problem, and resulted in premature failure of the PSU’s. This is one of the reasons why a proper Governement backed teamwork operation must happen for 3kw electric car chargers.
High power kit like EV chargers is exceptionally vulnerable to dodgy cheap design practices…
I have experience with a company that sold 5-10kw electric drives….with this type of kit, there is lots you can do to increase the lifetime…but it costs………There is lots you can do to save money and create a cheaper product that will fail quickly….……loads of cheap dodgy chargers will be imported by middle men and create loads of scrap if the dodgy stuff isn’t blocked by tariffs etc.
When I worked with 5-10kw electric drives, so many used to fail (because we made them cheap), that we used to sell the customer “contracts to supply” electric drives, instead of selling the drives by volume…this was because they failed so often, that it was cheaper to just get the customer on a 12 month contract, and within that 12 months , we would just replace every failed electric drive for free…. As you know, this is what its like in the high power game, the kit can fail in droves when you take cost shortcuts….we did take cost shortcuts, because it was cheaper to just keep replacing the failed ones and make them cheaply.
Here is some of the shortcuts that get taken with high power kit…
I reverse engineered a 3kw charger some years ago and found the power fet isolated gate drives were not giving enough voltage to get into the lower rds(on) area…such slack and el-cheapo practices would be weeded out by the government monitored process. All individual companys who were taking part in this government initiative would have the info distributed to them so that all could benefit from each others knowledge….teamwork. All would be payed bonus’s if any member got good results, to encourage team effort...encourage helping each other along.
And ultimately, there is teamwork between western co’s anyway, because engineers at Ford have mates at Vauxhall..and will secretly share their secrets.
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Ok thanks, by the way, this thread was never meant to be political…it was always supposed to be about discussing technical ideas toward 3kw EV chargers that the government could do in a big team effort between government sponsored companies…for example…
No private company would bother to do the following excellent methods…
Transient protection, Mains input filter, PFC, isolation stage, current regulator stage….these should all be modular…..if one of them gets a fault….then it gets sent back to the repair centre, and the one module that has the fault is replaced…all the other modules will be re-used…..saving on scrap.
Also, proper temperature sensing throughout the converter, including elec’lytic cap cases…..no private co’ would bother with this…power would be pegged back till the temp went down to good level. A private co would just shove one NTC in there and try and do it from that alone…loads of scrap would result.
MOVs will be used…and if done by private sector, units which blew a fuse simply because the mov blew up will be totally scrapped…..not so with the government led thing………….MOV units will be replaced and the unit sent back out after some advisory testing.
This government led project will also massively help bring on power supply engineers in the UK or whatever country.
There is a massive shortage in uk...plus other countries.
I appreciate that if any individual is making a ton of money through working in the private sector, then you’re not going to be interested in any government backed project, period……but just think of all the government money which gets poured into UK co’s at the moment…in terms of “development grants”…this amounts to billions of pounds of wasted money every year…wasted by private UK companies doing “waste of time” things with this taxpayers money.