意大利SIRIO脈沖變壓器丨電流互感器丨電感器產(chǎn)品介紹
SIRIO變壓器TI系列介紹
用途
脈沖變壓器用于高頻功率轉(zhuǎn)換器中，當需要根據(jù)與每個不同應(yīng)用領(lǐng)域相關(guān)的安全標準，將電脈沖從控制裝置傳輸?shù)焦β始墪r，保持電路之間的電流隔離。
電信號被施加到初級側(cè)，然后傳遞到次級側(cè)，以發(fā)射功率BJT，功率MOSFET，IGBT，SCR，GTO，TRIAC。
特征
在高頻功率轉(zhuǎn)換系統(tǒng)中，有多種控制技術(shù)可用，它們因不同的設(shè)備參數(shù)而不同，例如額定功率，額定電壓和電流，應(yīng)用領(lǐng)域。
開發(fā)人員為自己的應(yīng)用選擇了點火拓撲之后，他就有機會通過考慮其主要參數(shù)來找到最合適的脈沖變壓器。
脈沖變壓器的主要特點如下：
? n 初級匝數(shù)比
? Vt 可以通過單極性脈沖在次級側(cè)傳輸?shù)淖钚‰妷?時間區(qū)域（稱為傳輸區(qū)域），不會引起磁芯飽和，參考溫度為25°C
? LP 初級繞組電感
? Ck 繞組之間的耦合能力
? Ls 初級漏感，它是在次級繞組短路時在初級側(cè)測得的電感值
? RP 初級繞組電阻
? RS 次級繞組電阻
? tr 上升時間，是在次級側(cè)連接額定負載電阻時傳輸脈沖所需的時間；該值與漏感值緊密相關(guān)
? Imax 最大次級電流，上升時間等于tr（連接到次級繞組的額定負載電阻）
? Ip 額定一次有效電流（熱電流）
? fn 額定工作頻率（或最佳頻率范圍）
? Uis 兩個繞組之間的最大工作電壓
? Up 兩個繞組之間的隔離電壓
Sirio脈沖變壓器按尺寸和生產(chǎn)概況分類，并按系列分組。有一些標準脈沖和驅(qū)動變壓器，它們按家族列出。它們可以用于許多應(yīng)用程序，但是由于解決方案的可能性非常大，因此有時有必要開發(fā)定制產(chǎn)品（請參見“定制設(shè)計”表）。通過查看標準代碼表，可以輕松了解每個脈沖/驅(qū)動變壓器尺寸的一般特征。
Purpose
Pulse transformers are used in high frequency power converters, when it is required to trasfer an electrical pulse from the control to the power stage, keeping the galvanic isolation between the circuits, according to the safety standards related to each different application fields.
The electrical signal is applied to the primary side and transferred to the secondary side, to fire power BJTs, power MOSFETs, IGBTs, SCRs, GTOs, TRIACs.
Features
In high frequency power conversion systems, several control techniques are available and they differ from each other because of the striking apparatus parameters, like rated power, rated voltages and currents, field of application.
After the developer has chosen the firing topology for his application, he has the chance to find the most suitable pulse transformer, by considering its main parameters.
Main features of a pulse transformer are the following ones:
? n primary to secondary turns ratio
? Vt minimum voltage*time area (called transfer area) that can be trasferred at the secondary side with unipolar pulse, without causing the core saturation, referred to the temperature of 25°C
? LP primary winding inductance
? Ck coupling capacity between windings
? Ls primary leakage inductance, it is the inductance value measured at the primary side, with the secondary winding short-circuited
? RP primary winding resistance
? RS secondary winding resistance
? tr rise time, it is the time that takes to trasfer the pulse when the rated load resistance is connected at the secondary side; this value is tightly connected to the leakage inductance value
? Imax maximum secondary current, available with a rise time equal to tr (rated load resistance connected to the secondary winding)
? Ip rated primary effective current (thermal current)
? fn rated working frequency (or optimum frequency range)
? Uis maximum working voltage between two windings
? Up isolation voltage between two windings
Sirio pulse transformers are classified by dimensions and production profiles and grouped in Families. Some Standard Pulse and Drive Transformers are available, they are listed on a family by family basis. They can be used for many applications but, as the solution possibilities are so many, it is sometimes necessary to develop a custom product (see the Custom Design sheet). By looking through the standard codes table it is easy to understand the general features of each pulse/drive transformer size.
SIRIO變壓器TC系列介紹
用途
這些變壓器是高頻功率轉(zhuǎn)換器的基本組成部分。像標準的50 Hz變壓器一樣，它們根據(jù)不同應(yīng)用領(lǐng)域相關(guān)的安全標準，通過改變電壓和電流水平并保持負載與電網(wǎng)的電氣隔離，將電能從一次側(cè)傳遞到二次側(cè)。通常，市電電壓由全波二極管橋和電容器整流，直流鏈路通過控制在幾十或幾百kHz范圍內(nèi)的電子開關(guān)（或多個，取決于拓撲）為變壓器供電 。
特征
根據(jù)應(yīng)用，額定功率，工作電壓，額定電流，環(huán)境條件，設(shè)計人員必須為功率轉(zhuǎn)換器選擇最佳拓撲結(jié)構(gòu)。最常用的是功率高達1 kW的反激，前向，推挽式轉(zhuǎn)換器，而對于更高的值，半橋或全橋轉(zhuǎn)換器是更合適的拓撲結(jié)構(gòu)。Sirio開發(fā)和生產(chǎn)尺寸不超過1 kW的小型開關(guān)模式變壓器，以及功率不超過20 kW或更高的開關(guān)模式電源變壓器。
工業(yè)應(yīng)用通常需要有關(guān)電氣數(shù)據(jù)，效率要求，安全標準，堅固性，機械尺寸等方面的特定功能，因此很少考慮使用標準電源或標準變壓器。
多樣化的現(xiàn)實使Sirio決定為開關(guān)變壓器的開發(fā)做出巨大的努力，以便能夠提供針對自動化生產(chǎn)進行優(yōu)化的特殊組件：這種方法使得創(chuàng)造滿足客戶要求的產(chǎn)品成為可能。Sirio技術(shù)。
這種理念一直是Sirio的強項之一：以標準組件為代價提供高質(zhì)量的定制產(chǎn)品。
? 通過選擇標準原材料，例如鐵氧體磁心和塑料零件（盒子和線軸），可以實現(xiàn)及時生產(chǎn)和規(guī)模經(jīng)濟。
? 由于對原材料的質(zhì)量進行了持續(xù)不斷的檢查，因此可以實現(xiàn)非凡的生產(chǎn)效率。
? 高頻組件在所有生產(chǎn)批次中都需要非常穩(wěn)定的結(jié)構(gòu)和統(tǒng)一的質(zhì)量，這只能通過高水平的自動化才能獲得：從卷繞到組裝過程，從真空鑄造到最終檢查階段。
? 多年來，一直在開發(fā)整個真空鑄造工藝，并密切關(guān)注產(chǎn)品，以找到在繞組之間非常短的距離內(nèi)達到很高的工作電壓水平的方法。
? 通過100％的最終檢查階段和生產(chǎn)過程中的過程檢查來保證并持續(xù)監(jiān)督生產(chǎn)質(zhì)量。
Purpose
These transformers are the basic part of high frequency power converters. Like standard 50 Hz transformers, they transfer the electrical power from the primary to the secondary side, by changing voltage and current levels and keeping the galvanic isolation of the load from the mains, according to the safety standards related to the different application fields. Usually the mains voltage is rectified by a full-wave diode bridge and a capacitor, the DC link feeds the transformer through an electronic switch (or more than one, depending on the topology) controlled in the range of some tens or some hundreds of kHz.
Features
Depending on the application, the rated power, the working voltage, the rated current, the environment conditions, the designer has to choose the best topology for the power converter. The most used ones are flyback, forward, push-pull converters for power levels up to 1 kW, while for higher values half-bridge or full-bridge converters are the more suitable topologies. Sirio develops and produces small size switch mode transformers, up to 1 kW, and switch mode power transformers, up to 20 kW and more.
Industrial applications typically requires specific features in terms of electrical data, efficiency requirements, safety standards, robustness, mechanical dimensions, and so on, so it is rarely possible to consider standard power supplies, or standard transformers.
That heterogeneous reality made Sirio decide to dedicate great efforts to the switching transformers development, in order to be able to supply special components, optimized for the automatic production: this kind of approach makes possible the creation of products satisfying the customer specification and enhanced by the Sirio technology.
That Philosophy has always been one of the Sirio's strong point: to offer a high quality customized product, at the cost of a standard component.
? Just-in-time production and economies of scale are achieved by the choice of standard raw materials, like ferrite cores and plastic parts (boxes and bobbins).
? Extraordinary productive efficiency is possible because of deep and continuous check of raw materials' quality.
? High frequency components need very stable construction and uniform quality over all the production batches, which can be obtained only with a high level of automation only: from the winding to the assembling process, from the vacuum casting to the final inspection phase.
? The whole vacuum casting process has been developed over the years with close attention to the products, to find the way to reach very high working voltage levels in very short distances between windings.
? The production quality is guaranteed and constantly supervised by the 100% final inspection phase and by process checks during production.
SIRIO變壓器TA系列介紹
通過考慮最終應(yīng)用和目的，可以使用幾種電流互感器。 每種類型都有其特定的功能，但是它們都有相同的目標：將輸入電流值轉(zhuǎn)換成比例信號；將輸入電流值轉(zhuǎn)換成比例信號。測量的準確性取決于應(yīng)用程序。
通常，電流將是變壓器的初級電流，而次級繞組將連接到負載電阻，以便獲得具有與測量電流相同信息的電壓信號（參見附圖）。
Sirio專門從事三種類型電流互感器的開發(fā)和生產(chǎn)。
? 市電電流互感器
? 用于測量的電流互感器
? 高頻應(yīng)用電流互感器
By considering the final application and the purpose, several current transformer kinds are available. Each type has its own specific features, but they all have the same goal: to convert, the input current value in a proportional signal; the accuracy of the measurement depends on the application.
Tipically, the current will be the primary current of the transformer, while the secondary winding will be connected to a burden resistance, in order to obtain a voltage signal with the same information of the measured current (see the drawing).
Sirio is specialized in the development and production of three types of current transformers.
? Mains Frequency Current Transformers
? Current Transformers for Measurement Purpose
? Current Transformers for High Frequency Applications
SIRIO變壓器I系列介紹
用途
“電感器”是指各種各樣的電感組件，具有各種各樣的應(yīng)用和目標，但它們都像“儲能罐”一樣工作。例如，通過考慮高頻DC / DC轉(zhuǎn)換器的輸出濾波級，輸出電感器與輸出電容器連續(xù)交換電能。由于電感器功能要包含電流的變化，因此流經(jīng)電感器的電流通常主要是直流電流，具有疊加的高頻電流紋波（在開關(guān)頻率或其兩倍值處，具體取決于拓撲結(jié)構(gòu)）。
類似地，通過考慮高頻轉(zhuǎn)換器的功率因數(shù)校正（PFC）階段，存在涉及電感器和電容器的高頻能量交換。在這種情況下，流經(jīng)電感的電流主要由電源頻率諧波和PFC級工作頻率處的疊加電流紋波組成。非隔離式高頻轉(zhuǎn)換拓撲（降壓，升壓，降壓-升壓）中也使用了類似的電感器，其中電流波形根據(jù)導(dǎo)通模式而變化，也就是說，轉(zhuǎn)換器工作在連續(xù)模式還是不連續(xù)模式。
特征
工業(yè)應(yīng)用通常需要專用的電感器，因為每個電感器都需要定義明確的特性。因此，Sirio選擇投入大量精力來進行量身定制的扼流圈開發(fā)，以自動生產(chǎn)為導(dǎo)向，而不是基于通常在我們的威士忌酒館中可獲得的標準原材料制作電感器目錄。這種方法使得可以以與目錄產(chǎn)品相同的成本及時生產(chǎn)定制組件。
電感器的主要特點如下
? Ln 額定電感值
? Rn 額定繞組電阻
? In 額定電流（輸出電感器的平均值）
? Imax 最大電流（磁芯不必在該峰值電流值處飽和）
? Irms 均方根電流（熱電流值）
? ΔI 峰值紋波電流
? fn 額定工作頻率（紋波頻率）
? Un 最大工作電壓（繞組上的最大電壓）
? Up 繞組與鐵芯之間或繞組與外殼之間的隔離電壓
Purpose
The term "inductor" refer to a wide category of inductive components, with a big variety of applications and goals, but they all act like “energy tanks”. For example, by considering the output filtering stage of a high frequency DC/DC converter, the output inductor continuously swaps the electrical energy with the output capacitor. As the inductor function is to contain the variation of current, the current through the inductor is normally mainly direct current with a superimposed high frequency current ripple (at the switching frequency, or its double value, depending on the topology).
Similarly, by considering the Power Factor Correction (PFC) stage of a high frequency converter, there is a high frequency energy swap involving the inductor and the capacitor; in that case, the current through the inductor is mainly composed by the mains frequency harmonic and a superimposed current ripple at the working frequency of the PFC stage. Similar inductors are also used in non-isolated high frequency conversion topologies (Buck, Boost, Buck-Boost), in which the current waveforms change depending on the mode of conduction, that is if the converter works in continuous or discontinuous mode.
Features
Industrial applications often require dedicated inductors, as every one needs well defined characteristics. For this reason, Sirio chose to dedicate great efforts to customized choke development, automatic production-oriented, instead of an inductors catalogue, based on standard raw materials, typically available at our wharehouse. This kind of approach makes possible a just in time production of a custom component with the same cost of a catalogue product.
Main features of inductors are the following ones.
? Ln rated inductance value
? Rn rated winding resistance
? In rated current (average value in case of output inductors)
? Imax maximum current (the core has not to saturate at that peak current value)
? Irms rms current (thermal current value)
? ΔI peak-to-peak ripple current
? fn rated working frequency (ripple frequency)
? Un maximum working voltage (maximum voltage across the winding)
? Up isolation voltage between winding and core or between winding and case
