The Rein\u00adhausen Group has seen its own fair share of developments\u2014drawing boards for design\u00ading on-load tap-chang\u00aders or test\u00ading tech\u00adnol\u00ado\u00adgy are yet more exam\u00adples of things that have been con\u00adsigned to the past. In fact, tech\u00adno\u00adlog\u00adi\u00adcal progress has tak\u00aden hold across every indus\u00adtry, and con\u00adven\u00adtion\u00adal sys\u00adtems are being replaced with smart ones. As a glob\u00adal tech\u00adnol\u00ado\u00adgy leader, HIGHVOLT is also opt\u00ading for intel\u00adli\u00adgent solu\u00adtions for its prod\u00aducts. Volt\u00adage con\u00adtrol involv\u00ading a mechan\u00adi\u00adcal\u00adly oper\u00adat\u00aded reg\u00adu\u00adlat\u00ading transformer\u2014a method that has been around for dec\u00adades\u2014is grad\u00adu\u00adal\u00adly being replaced by an pow\u00ader sup\u00adply plat\u00adform known as the elec\u00adtron\u00adic pow\u00ader source (EPS).
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What the electronic power source does<\/h2>\n
In order to explain just how big a step this is, this arti\u00adcle intends to pro\u00advide a brief overview of what the EPS does, how it dif\u00adfers from the cur\u00adrent solu\u00adtion, and what inno\u00adva\u00adtions and cus\u00adtomer ben\u00ade\u00adfits it brings with it. To achieve a test volt\u00adage of sev\u00ader\u00adal hun\u00addred thou\u00adsand volts, the avail\u00adable line volt\u00adage is con\u00advert\u00aded to a much high\u00ader lev\u00adel via trans\u00adform\u00aders. This works in a sim\u00adi\u00adlar way to a pri\u00adma\u00adry sub\u00adsta\u00adtion used by a domes\u00adtic ener\u00adgy sup\u00adpli\u00ader. To pre\u00advent the object that is the sub\u00adject of the test from being destroyed, the out\u00adput volt\u00adage needs to be reg\u00adu\u00adlat\u00aded.<\/p>\n
And there\u2019s a lit\u00adtle trick that can be used to do this, which involves reg\u00adu\u00adla\u00adtion tak\u00ading place straight away at the low-volt\u00adage side. The effect of the trans\u00adfer ratio can then be seen at the out\u00adput. To put it in sim\u00adpler terms, if you have connect\u00ad\u00aded a sys\u00adtem with a max\u00adi\u00admum volt\u00adage of 500,000 volts to a 400-volt grid and then set 200 volts at the input, there will be 250,000 volts at the out\u00adput. Sim\u00adi\u00adlar\u00adly, if 40 volts are set at the input, there will be 50,000 volts at the out\u00adput, and so on.<\/p>\n
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Pre\u00advi\u00adous\u00adly, a reg\u00adu\u00adlat\u00ading trans\u00adformer was used to achieve this. This mech\u00ada\u00adnism con\u00adveys a cur\u00adrent col\u00adlec\u00adtor across the wind\u00adings with the aid of a mechan\u00adi\u00adcal dri\u00adve, adjust\u00ading the volt\u00adage from 0 to 400 volts as a result. The size of the struc\u00adture used can vary sig\u00adnif\u00adi\u00adcant\u00adly depend\u00ading on the con\u00adnect\u00aded load and con\u00adnec\u00adtion volt\u00adage. The sup\u00adply grid is loaded asym\u00admet\u00adri\u00adcal\u00adly on two of three phas\u00ades.<\/p>\n
It is at pre\u00adcise\u00adly these points that the EPS comes in. At the grid con\u00adnec\u00adtion, there is an elec\u00adtron\u00adic pow\u00ader circuit\u2014known as the active front-end\u2014provided direct\u00adly by col\u00adleagues at MR PQ. This is used to rec\u00adti\u00adfy the AC volt\u00adage from the grid and then feed it into a DC link capac\u00adi\u00adtor. From there, a spe\u00adcial\u00adly devel\u00adoped pow\u00ader invert\u00ader with IGBTs act\u00ading as semi\u00adcon\u00adduc\u00adtor switch\u00ades pro\u00advides a vari\u00adable, fine\u00adly adjustable out\u00adput volt\u00adage between 0 and 690 volts.<\/p>\n
The grid load is dis\u00adtrib\u00aduted even\u00adly across all three phas\u00ades and the reg\u00adu\u00adla\u00adtion pro\u00adce\u00addure becomes much more pre\u00adcise and far faster\u2014without the need for any mechan\u00adi\u00adcal mov\u00ading parts. To pre\u00advent the need to man\u00adage lots of dif\u00adfer\u00adent designs, the rec\u00adti\u00adfi\u00ader and the pow\u00ader invert\u00ader can be con\u00adnect\u00aded in a mod\u00adu\u00adlar man\u00adner, and the sys\u00adtem can be scaled sim\u00adply by chang\u00ading the num\u00adber of iden\u00adti\u00adcal mod\u00adules incor\u00adpo\u00adrat\u00aded into the sys\u00adtem.<\/p>\n
Low\u00ader oper\u00adat\u00ading costs, short\u00ader test times, sim\u00adple expan\u00adsion options, and quick and easy repairs\u2009\u2014\u2009the new sys\u00adtem deliv\u00aders a whole range of ben\u00ade\u00adfits<\/p><\/blockquote>\n
This pro\u00advides a whole host of ben\u00ade\u00adfits to cus\u00adtomers. In addi\u00adtion to the more pre\u00adcise and faster volt\u00adage reg\u00adu\u00adla\u00adtion that has already been described, excess ener\u00adgy in the res\u00ado\u00adnant cir\u00adcuit can now be fed back from the correspond\u00ading test\u00ading sys\u00adtems to the pow\u00ader grid. Of par\u00adtic\u00adu\u00adlar inter\u00adest is the vari\u00adable sys\u00adtem fre\u00adquen\u00adcy, which can be set to be\u00adtween 0 and 500 hertz.<\/p>\n
This enables our cus\u00adtomers to per\u00adform tests for the entire glob\u00adal mar\u00adket using 50 hertz and 60 hertz\u2014regardless of their actu\u00adal loca\u00adtion and the asso\u00adci\u00adat\u00aded line fre\u00adquen\u00adcy lim\u00adits in dif\u00adfer\u00adent coun\u00adtries. Addi\u00adtional fre\u00adquen\u00adcy vari\u00ada\u00adtions can also be used to expand the test range or to take spe\u00adcial mea\u00adsure\u00adments for the pur\u00adpose of locat\u00ading faults\u2014measurements that were not pos\u00adsi\u00adble pre\u00advi\u00adous\u00adly. In addi\u00adtion, the sys\u00adtem enables har\u00admon\u00adics to be active\u00adly com\u00adpen\u00adsat\u00aded or applied in spe\u00adcif\u00adic ways.<\/p>\n
Modular system<\/h2>\n
Essen\u00adtial\u00adly, the cus\u00adtomer receives a sys\u00adtem that can be extend\u00aded as need\u00aded and will be well placed to meet what\u00adever future demands it faces. What\u2019s more, should there ever be a prob\u00adlem, the indi\u00advid\u00adual mod\u00adules can be repair\u00aded quick\u00adly, mean\u00ading that the sys\u00adtem will only be out of action for a few hours.<\/p>\n
The mod\u00adu\u00adlar design enables cus\u00adtomers to ben\u00ade\u00adfit from the full range of func\u00adtions that the sys\u00adtem offers from the out\u00adset and upgrade it eas\u00adi\u00adly at any time. A whole host of prop\u00ader\u00adties that are cur\u00adrent\u00adly deliv\u00adered through add-on com\u00adpo\u00adnents come already inte\u00adgrat\u00aded in the EPS, such as har\u00admon\u00adic com\u00adpen\u00adsa\u00adtion, short-cir\u00adcuit detec\u00adtion, and emer\u00adgency shut\u00addown.<\/p>\n
The sup\u00adply plat\u00adform is being intro\u00adduced in stages. Facil\u00adi\u00adties with a sin\u00adgle-phase out\u00adput volt\u00adage for AC sys\u00adtems of type WP (trans\u00adformer-based) and type WRM (based on the res\u00ado\u00adnance prin\u00adci\u00adple) will be the first to be equip\u00adped with the EPS. This will be fol\u00adlowed by the adap\u00adta\u00adtion for mod\u00adu\u00adlar DC test equip\u00adment. The devel\u00adop\u00adment of the three-phase EPS means that trans\u00adformer test sys\u00adtems for low-volt\u00adage and medi\u00adum-volt\u00adage trans\u00adform\u00aders will soon be avail\u00adable with the new EPS fea\u00adture too. The func\u00adtions pro\u00advid\u00aded by the sys\u00adtem are con\u00adstant\u00adly being expand\u00aded.<\/p>\n
Customer benefits<\/h2>\n
The biggest chal\u00adlenge when it came to devel\u00adop\u00ading the EPS was achiev\u00ading a low noise lev\u00adel. Tests can only be done if what is known as the par\u00adtial dis\u00adcharge back\u00adground noise lev\u00adel is much low\u00ader than the sig\u00adnal being mea\u00adsured. The experts at HIGHVOLT have suc\u00adceed\u00aded in reduc\u00ading this noise lev\u00adel to < 1 pC (pic\u00ado\u00adcoloumb), mean\u00ading that it is below the lev\u00adel of con\u00adven\u00adtion\u00adal feed-ins.<\/p>\n
Despite the exten\u00adsive enhance\u00adments the EPS offers, it does not cost cus\u00adtomers any more to pur\u00adchase and even saves them mon\u00adey dur\u00ading oper\u00ada\u00adtion thanks to short\u00ader test times, sim\u00adple expan\u00adsion options, and quick and easy repairs. Not only that, but cus\u00adtomers also ben\u00ade\u00adfit from a much wider range of func\u00adtions that they can select based on their needs.<\/p>\n
\nYOUR CONTACT<\/h2>\n
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