Abstract DC corona discharges are widely used in industrial applications. The electrical characteristics of these discharges (e.g., the corona onset voltage, the voltage at which the corona discharge transfers its mode, the appearance of corona discharge modes, the average current-voltage (I–V) characteristics, and the corona discharge hysteresis) are usually investigated via procedures in which the DC voltage is varied step-by-step. However, these procedures have limitations. For example, it is difficult to determine the voltage at which the transition from one corona discharge mode into another mode occurs. The procedures are also time-consuming because the voltage and corresponding current waveforms must be monitored step-by-step to sweep the corona discharge I–V characteristics and determine the corona mode transition points. To address these problems, we have introduced repetitive ramp and triangular voltages generated using a high voltage amplifier rather than DC voltages to investigate the I–V characteristics of corona discharges. Using ramp voltages in our experiments, the I–V characteristics of both positive and negative corona discharges were determined. The I–V characteristics obtained using the ramp voltages were then compared with those measured laboriously step-by-step by varying the DC voltage. Additionally, time-resolved corona discharge images of the ramp voltages in our experiments were captured using an intensified charge-coupled device (ICCD) camera. These images illustrated how the discharge modes of the positive and negative coronas varied with increasing applied voltages. We also measured the hysteresis of the positive and negative corona discharges using repetitive triangular voltages, which represent a modified version of the ramp voltages.

中文翻译：

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一种使用重复斜坡和三角电压测量直流电晕放电特性的新方法

摘要 直流电晕放电广泛应用于工业领域。这些放电的电气特性（例如，电晕起始电压、电晕放电转换其模式的电压、电晕放电模式的出现、平均电流-电压 (I-V) 特性和电晕放电滞后）通常通过逐步改变直流电压的程序进行研究。但是，这些程序有局限性。例如，很难确定从一种电晕放电模式转变为另一种模式的电压。这些程序也很耗时，因为必须逐步监测电压和相应的电流波形，以扫描电晕放电 I-V 特性并确定电晕模式转变点。为了解决这些问题，我们引入了使用高压放大器而不是直流电压产生的重复斜坡和三角电压来研究电晕放电的 I-V 特性。在我们的实验中使用斜坡电压，确定了正负电晕放电的 I-V 特性。然后将使用斜坡电压获得的 I-V 特性与通过改变直流电压逐步测量的特性进行比较。此外，我们实验中斜坡电压的时间分辨电晕放电图像是使用增强型电荷耦合器件 (ICCD) 相机捕获的。这些图像说明了正负电晕的放电模式如何随着施加电压的增加而变化。