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AC + DC電源/放大器

可編程AC + DC電源3kVA?67kVA（DC + 0.01Hz?1kHz）

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為大功率應(yīng)用定制波形生成

在電子產(chǎn)品的研究，開發(fā)和測試過程中，產(chǎn)生功率波形的需求通常不屬于傳統(tǒng)市電供應(yīng)的范圍。波形需要范圍從純正弦波120V 60Hz甚至諧波失真與特定的諧波使THD的貢獻。在這些情況下，N4A系列可編程交流電源提供了靈活，堅固和高性能的發(fā)電解決方案。 N4L提供市場上 價值的可編程電源，實現(xiàn)正弦波形生成和的諧波合成精度，市場*的保真度性能<0.3％THD。

為廣泛的應(yīng)用提供全面的靈活性，包括白色家電測試，電機驅(qū)動開發(fā)，符合IEC61000的EMC測試，航空航天，汽車，空間探索，機器人等等。

以及純正弦波形。如果您需要生成定制的高功率波形，N4L想要滿足您的要求。

像汽車，航空航天和可再生能源這樣的行業(yè)已經(jīng)接受了N4A，因為他們提供價格合理，高度可靠，堅固耐用，高性能的AC + DC電力傳輸。

什么是AC（+ DC）可編程電源？

AC（+ DC）可編程電源可以概括為具有附加功能以及任意波形發(fā)生，電壓和頻率調(diào)制功能以及排序功能的變頻器。任意波形發(fā)生器實質(zhì)上連接到高保真功率放大器，能夠提供高達(dá)67kVA（取決于型號）。

AC（+ DC）電源如何工作

N4A AC（+ DC）電源 將交流輸入市電信號（通常為50 / 60Hz和100?250Vrms）轉(zhuǎn)換為直流信號，直流母線的輸出連接到一個專有的逆變器，該逆變器利用PWM開關(guān)技術(shù)以及精心設(shè)計的輸出濾波網(wǎng)絡(luò)來提供高度穩(wěn)定的低失真輸出波形。因此，如果需要正弦輸出，失真（％THD）通常低于0.1％。逆變器由高度可配置的任意波形發(fā)生器驅(qū)動，能夠產(chǎn)生復(fù)雜的波形房屋開發(fā)測試程序。

高功率任意波形生成

我們所有的信號源均采用由N4L開發(fā)的專有雙通道任意波形發(fā)生器技術(shù)。該技術(shù)利用雙通道直接數(shù)字合成來召喚兩個DDS發(fā)生器。因此，為用戶提供同步，多次諧波生成以及頻率掃描和長排序功能。

使用兩個DDS發(fā)生器可提供主功率器件和調(diào)制信號的 分辨率。

這種測量技術(shù)允許在不降低每個頻譜分量的分辨率的情況下生成長的自定義波形序列。與基本功率信號相比，這是特別有利的。傳統(tǒng)的單個DAQ任意發(fā)生器在產(chǎn)生低水平的諧波以及大的基礎(chǔ)時會遭受較差的分辨率。作為這項技術(shù)的結(jié)果，N4A的精度遠(yuǎn)遠(yuǎn)超過IEC61000-4-13（諧波和諧波間諧波敏感度測試）及其競爭對手的要求。

交流可編程電源四分之一視圖
N4A交流電源具有10位垂直分辨率和16,384點的 波形分辨率，可生成單個周期性波形。還有一個用于導(dǎo)入自定義波形的內(nèi)部存儲功能。

N4A系列AC + DC電源可提??供從6kVA到30kVA以上的各種輸出額定值。以及IEC61000電磁兼容性標(biāo)準(zhǔn)測試，提供低THD和優(yōu)異的可靠性。

N4A AC + DC電源 - 高功率，低失真，1kHz全信號帶寬

模型

輸出功率

帶寬

輸出THD％

輸出階段

 輸出電流（連續(xù)）

 輸出電流（3秒涌入）

N4A03 3kVA的
1kHz滿信號，

15kHz的小信號

<0.3％1期10

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AC+DC Power Sources/Amplifiers

Programmable AC+DC Power Sources 3kVA ~ 67kVA (DC+0.01Hz ~ 1kHz)

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Customized Waveform Generation for High Power Applications

During research, development and testing of electronic products, the need to generate supply waveforms to power a product often fall outside the scope of the traditional mains supply. The wave forms required range from pure sinusoids at 120V 60Hz or even harmonically distorted with a specific harmonic making the THD contribution. In these cases, the N4A range of programmable AC power sources offer a flexible, rugged and high performance power generation solution. N4L provide best value programmable power sources on the market, achieving market leading fidelity performance  of <0.3% THD for sinusoidal wave form generation and unrivaled harmonic synthesis accuracy.

Offering complete flexibility for a wide range of applications including white goods testing, motor drive development, EMC testing to IEC61000, aerospace, automotive, space exploration, robotics and much more.

Our power sources feature the ability to generate complex as well as pure sinusoidal wave forms. If you need to generate customized high power wave forms, N4L will have a solution to meet your requirements.

Industries such as automotive, aerospace, and renewable energy have embraced the N4A due to the fact they offer affordable, highly reliable, rugged, high performance AC+DC power delivery.

What is an AC(+DC) Programmable Power Source?

An AC(+DC) Programmable Power Source can be summarized as a frequency converter with added functionality such as arbitrary waveform generation, voltage and frequency modulation capabilities and sequencing functionality. The arbitrary waveform generator is essentially connected to a high fidelity power amplifier able to deliver up to 67kVA (depending upon model).

How an AC(+DC) Power Source works

The N4A AC(+DC) power sources initially convert the AC input mains signal (Usually at 50/60Hz and between 100~250Vrms) into a DC signal, this is performed by a three phase or single phase input rectifier which charges a DC bus. The output of the DC bus is connected to a proprietary inverter which utilizes PWM switching techniques along with a carefully designed output filter network to provide a highly stable low distortion output waveform. Thus, if a sinusoidal output is required the distortion (% THD) is typically below 0.1%. The inverter is driven by a highly configurable arbitrary waveform generator, which is able to create complex wave forms that can feature a range of harmonics, interharmonics, surges, sags, swells and frequency variations required for both international standards compliance testing as well as customized in house development test procedures.

High Power Arbitrary Waveform Generation

All of our sources feature proprietary dual channel arbitrary waveform generator technology developed by N4L. This technology utilizes dual channel direct digital synthesis a summing amplifier circuitry to combine the two DDS generators. Thus, providing the user with simultaneous, multiple harmonic generation as well as frequency sweeping and long sequencing capabilities.

The use of two DDS generators provides optimized resolution of both the main power component and the modulation signal, whereby the modulation signal can be a harmonic or inter-harmonic of the fundamental, for example.

This metrology permits long custom waveform sequences to be produced without a reduction in the resolution of each spectral component. This is especially beneficial when the harmonic is very small in comparison to the fundamental power signal. Traditional single DAQ arbitrary generators suffer from poor resolution when generating low level harmonics alongside large fundamentals. As a result of this technology, the accuracy of the N4A far exceeds the requirements of IEC61000-4-13 (harmonic and inter-harmonic susceptibility testing) and its competitors.

The N4A AC Source also features 10-bit vertical resolution and a maximum waveform resolution of 16,384 points to produce a single periodic waveform. There is also an internal storage function for imported custom wave forms featuring user intuitive library menus that display the waveform graphically on the user interface.

The N4A range of AC+DC Power Sources are available with a variety of output power ratings from 6kVA up to and above 30kVA. They are the perfect solution for general power source applications as well as IEC61000 electromagnetic compatibility standards testing, offering low THD and excellent reliability.

For more information please see the AC+DC Programmable Power Source product page

LPA Series Laboratory Power Amplifiers: Wide bandwidth precision voltage and current amplifiers

The LPA range of Laboratory Power Amplifiers from N4L provide AC and DC coupled wide band amplification for a wide variety of industrial and laboratory applications. All LPA amplifiers exhibit a 1MHz bandwidth and range from 400Vpk, 50mA models to 18Vpk, 5Arms models.Designed originally for use with N4L Phase Sensitive Multimeters, they can also be used anywhere where there is a need to boost a signal in either voltage or current at frequencies up to 1MHz.

They combine DC accuracy with wide bandwidth to faithfully reproduce complex wave forms, driving loads that may be resistive or reactive.Applications for which the LPA amplifiers can be used within are wide ranging, from Piezo transducer testing to materials analysis of dielectrics where high voltage DC offsets are required.

The LPA can be coupled with an N4L PSM Frequency Response Analyzer and external current shunt to provide a flexible impedance measurement system able to drive DUT’s at higher voltages and currents normally possible using traditional LCR measurement methods.

Reasons to choose an N4L Laboratory Power Amplifier

Products in this series

• Programmable AC Power Sources 3kVA ~ 67kVA (DC+0.01Hz ~ 1kHz)

  The N4A Programmable AC Power Sources are available from 3kVA ~ 67kVA, the ideal solution as part of IEC61000 compliant EMC test systems or general power source applications.

   View Product Details

• LPA05 Laboratory Power Amplifier

  LPA05: LPA05A & LPA05B provide wide bandwidth signal amplification at up to 8A peak

   View Product Details

• LPA400 Laboratory Power Amplifier

  LPA400: The LPA400 is a wideband high volatge amplifier ideal for a range of applications

   View Product Details

• LPA01 Laboratory Power Amplifier

  LPA01: The LPA01 is a wide bandwidth DC accurate amplifier

   View Product Details