Abstract
The article presents applications of systems with power electronic converters, high voltage transformers, and discharge chambers used for nonthermal, dielectric barrier discharge plasma treatment of a plastic surface and decontamination of organic loose products. In these installations, the inductance of the high voltage transformers and the capacitances of the electrode sets form resonant circuits that are excited by inverters. The article presents characteristic features of the installations and basic mathematical relationships as well as the impact of individual parameters of system components. These converters with their output installations were designed, built, and tested by the authors. Some of the converters developed by the authors are manufactured and used in the industry.
Highlights
Plasma systems and plasma treated materials are commonly used
For a power lower than 20% of PN, the system switched to pulse density modulation (PDM) + pulse frequency modulation (PFM) modulation according to the method developed by one of the authors
Dielectric barrier discharges and ozone produced in this process can be used to decontaminate products such as seeds or ground dried plants
Summary
Plasma systems and plasma treated materials are commonly used. The cold, nonthermal plasma (NTP) is produced usually by high voltage (HV) electrical discharges. The article [21] includes a review of the applications of DBD to high power CO2 lasers, excimer based ultraviolet and fluorescent lamps and flat large-area plasma displays Another important application of barrier discharges and corona discharges (CD) is the investigation of the ionic wind generation and examination of its results for the development of propulsion [25]. The basic control methods of high voltage alternating current (HVAC) generators that are used to generate DBD plasma are described in [29,30,43] These are pulse amplitude modulation (PAM), pulse width modulation (PWM), phase shift-pulse width modulation (PS-PWM, PSC), pulse density modulation (PDM), and pulse frequency modulation (PFM). 0.5 kW and about 25 kHz by 10 kW of rated power)
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