A High-Power High-Voltage Power Supply for Long-Pulse Applications
A High-Power High-Voltage Power Supply for Long-Pulse Applications
复制标题
适用于长脉冲应用的高功率高压电源
DOI：
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发表时间：
2009
影响因子：
1.5
通讯作者：
C. Scapellati
中科院分区：
文献类型：
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作者：
A. Pokryvailo;C. Carp;C. Scapellati
本文介绍了一种高效率、小尺寸、低成本的100-kV 100-kW高压（HV）电源（HVPS）的概念和物理演示，该电源专为长脉冲应用（单位为毫秒到直流操作）而设计。关键技术包括一个模块化高压转换器，其能量计量逆变器运行频率约为50 kHz，并在各种工作条件下表现出97.5%的效率。逆变器的输出电压是相移的，这产生了1%的低涟漪和3 kV/μs的压摆率，最大电压下的存储能量小于10 J。模块化结构允许根据特定需求轻松定制HVPS。由于效率高，无需水冷即可实现小型化。控件提供标准操作功能和高级数字处理功能，沿着轻松适应特定应用的要求。详细介绍了HVPS的设计和测试。它示出的涟漪因子是成反比的模块的数量平方。实验电流和电压波形表明，几乎无损开关广泛变化的负载在整个范围内的线路输入电压和公平的协议与电路仿真。总效率在满载时高达95%，在20%负载时大于90%，功率因数通常大于93%。
This paper describes a concept and a physical demonstration of a high-efficiency small-size low-cost 100-kV 100-kW high-voltage (HV) power supply (HVPS) designed for long-pulse applications (units of milliseconds to dc operation). Key technology includes a modular HV converter with energy-dosing inverters that run at about 50 kHz and have demonstrated an efficiency of 97.5% across a wide range of operating conditions. The inverters' output voltages are phase shifted, which yields a low ripple of 1% and a slew rate of 3 kV/μs combined with less than 10 J of stored energy at the maximum voltage. Modular construction allows easy tailoring of HVPS for specific needs. Owing to high efficiency, small size is achieved without water cooling. Controls provide standard operating features and advanced digital processing capabilities, along with easiness of accommodating application-specific requirements. HVPS design and testing are detailed. It is shown that the ripple factor is inversely proportional to the number of modules squared. Experimental current and voltage waveforms indicate virtually lossless switching for widely varying load in the full range of the line input voltages and fair agreement with circuit simulations. The overall efficiency is as high as 95% at full load and greater than 90% at 20% load, with a power factor that is typically greater than 93%.