An 8-GW long-pulse generator based on Tesla transformer and pulse forming network

Abstract

A long-pulse generator TPG700L based on a Tesla transformer and a series pulse forming network (PFN) is constructed to generate intense electron beams for the purpose of high power microwave (HPM) generation. The TPG700L mainly consists of a 12-stage PFN, a built-in Tesla transformer in a pulse forming line, a three-electrode gas switch, a transmission line with a trigger, and a load. The Tesla transformer and the compact PFN are the key technologies for the development of the TPG700L. This generator can output electrical pulses with a width as long as 200 ns at a level of 8 GW and a repetition rate of 50 Hz. When used to drive a relative backward wave oscillator for HPM generation, the electrical pulse width is about 100 ns on a voltage level of 520 kV. Factors affecting the pulse waveform of the TPG700L are also discussed. At present, the TPG700L performs well for long-pulse HPM generation in our laboratory.

Time‐domain resonant characteristics between the disturbances and the RS422 communication signals in Tesla pulse driver, and analysis on the caused RS422 communication interference

“…Under the circumstance of intensive EM radiation from the pulse driver itself, the instantaneous conducting disturbances are difficult to be observed. In order to accurately test the instantaneous communication disturbances on the four communication lines in full time domain, a shielded transition cable is employed and four extra test lines (1,2,3,4) are lead out at the side of SB. As shown in Fig.…”

“…Tesla pulse driver is a kind of pulsed power compression system which transfers AC or DC electrical power to μs-range and nsrange pulsed power [1,2]. As the Tesla pulse driver can provide repetitive ns-range high voltage (∼1 MV) pulses and high current (5∼40 kA) pulses, it is broadly applied in the fields of pulsed power technology, intensive electron-beam accelerators and high power microwave [3][4][5].…”

Analysis and elimination on common‐mode interferences generated in the series‐resonant converter system of high‐power Tesla pulse driver

“…In contrast to the traditional constant-voltage charging and the lowfrequency L-C resonant charging, high-frequency series-resonant charging is broadly applied in the fields of new energy and pulsed power technology due to its high energy efficiency and immunity to the short-circuit error [1][2][3][4]. When the high-power Tesla pulse driver works repetitively, the primary energy-storage capacitors are usually charged by the series-resonant constant-current charging power source [4,5]. The series-resonant charging power source consists of a high-voltage module and a low-voltage module.…”

Magnetic Coupling in Tesla transformers

“…8, No. 6;2016 gas medium (H 2 , N 2 or SF 6 ) may also either be used to increase the electron mobility so enabling rapid recombination, or to decrease mobility so that the conducting channel self-extinguishes rapidly.…”

“…Although used initially for the high-voltage testing of domestic and industrial power insulation and switchgear, in recent years they have become a vital requirement in many research areas, particularly those involving particle and plasma physics, as well as high power systems that involve the generation of microwave and X-ray radiation. Despite the original experiments being performed by Nikola Tesla (Lomas, 2000) well over a hundred years ago, with the typical and very spectacular results evident in Figure 1, important new applications still continue to arise in technically active countries worldwide e.g (Peng, Liu, Song, & Su, 2011;Novac, Wang, Smith, & Senior, 2014;Su et al, 2016). Tesla transformers are produced in several different constructional forms and they can be classified in a number of ways depending on the sometimes competing output requirements of extremely high voltage or high average power.…”