非接觸感應(yīng)電能傳輸系統(tǒng)中閉環(huán)電壓檢測與控制方法研究

非接觸式電能傳輸是一種利用電磁感應(yīng)耦合技術(shù)、電力電子技術(shù)和現(xiàn)代控制技術(shù)實(shí)現(xiàn)的電源側(cè)與負(fù)載側(cè)完全分離的電能傳輸技術(shù)，克服了傳統(tǒng)電能傳輸方式在一些特殊環(huán)境如易燃易爆、水下等場合存在的弊端，實(shí)現(xiàn)電能安全可靠地傳輸。非接觸
感應(yīng)電能傳輸采用可分離變壓器進(jìn)行電能傳輸，優(yōu)點(diǎn)明顯，但同樣存在缺點(diǎn)，主要缺點(diǎn)是：由于漏磁增加，可分離變壓器的副邊輸出電壓與傳統(tǒng)變壓器相比減小，不能由變壓器原邊電壓推導(dǎo)出副邊電壓。本文應(yīng)用變壓器原、副邊電壓頻率不受可分離變壓器
存在較大氣隙的影響原理，將負(fù)載電壓轉(zhuǎn)換成與電壓成比例關(guān)系的交流信號(hào)，通過原邊接收檢測電壓的頻率間接獲取負(fù)載電壓，進(jìn)而調(diào)節(jié)變壓器一次側(cè)電壓，達(dá)到調(diào)節(jié)負(fù)載輸出電壓的目的。本文提出這種應(yīng)用于非接觸感應(yīng)電能傳輸系統(tǒng)中間接檢測負(fù)載電壓的方法，實(shí)現(xiàn)了非接觸感應(yīng)電能傳輸系統(tǒng)中閉環(huán)電壓檢測與控制，使負(fù)載側(cè)電壓精確控制變?yōu)榭赡堋?BR>Abstract: Most electrical equipments get the energy through plugs from source, this kind of energy transmission system is efficient
and accepted widely. But it is unsafe at the special circumstance such as undersea applications and flammable environments, for spark and
uncovered conduct exist at those systems. This paper describes a contact-less power transmission system using detachable transformer,
which is spark free and no uncovered conduct is exposed to the environments. But because there is a contact-less transformer in the
contact-less power transfer system, we can’t get the voltage of load side directly. This paper finds a method which can indirectly detect the
voltage of load side by changing the direct-current voltage of the load side to the square waves of the different frequencies, and put the
square wave on the detachable transformer which is another transformer. We can get the signal in the primary side which changing with the
voltage of the load side by magnetizing couple. So, we can gain the voltage of the load side indirectly by measuring the frequency of the
signal in the primary side. By this way, we can detect and control the load side voltage of the contact-less power transfer system.
關(guān)鍵詞：非接觸電能傳輸，串聯(lián)諧振式逆變器，可分離變壓器，負(fù)載電壓控制
Keywords: contact-less power transmission, resonant converter , detachable transformer, voltage control