Four‐kilowatt homogeneous microwave heating system using a power‐controlled phase‐shifting mode for improved heating uniformity
| Autor: | Chang-Hyun Jeong, Seong-Hyeop Ahn, Wang-Sang Lee |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
power‐controlled phase‐shifting mode
multimode microwave cavity Multi-mode optical fiber Materials science business.industry 020208 electrical & electronic engineering Phase (waves) microwave power Astrophysics::Cosmology and Extragalactic Astrophysics 02 engineering and technology Dielectric system controller TK1-9971 Power (physics) phase‐shifting WR‐340 waveguides Cavity magnetron 0202 electrical engineering electronic engineering information engineering Optoelectronics magnetron output power controls Electrical engineering. Electronics. Nuclear engineering Electrical and Electronic Engineering business Microwave Microwave cavity Power control |
| Zdroj: | Electronics Letters, Vol 55, Iss 8, Pp 465-467 (2019) |
| ISSN: | 1350-911X 0013-5194 |
| DOI: | 10.1049/el.2019.0060 |
| Popis: | For homogeneous microwave heating in a microwave cavity with multiple 2.45 GHz microwave generators, power-controlled phase-shifting mode is proposed in this Letter. The proposed microwave heating system consists of a multimode microwave cavity in which dielectric materials are placed to be heated, four phase-shifting WR-340 waveguides for different phase excitation, four 1 kW magnetrons that produce microwave power at 2.45 GHz, and a power supply with a system controller for the magnetron output power controls. Using the proposed power-controlled phase-shifting mode, uniform heating distribution is achieved by reducing the hot and cold spots in the microwave cavity. The proposed experiments demonstrated that in comparison to a conventional mode with simultaneous multiple inputs, the proposed mode can achieve an improved heating uniformity of 64.4 . |
| Databáze: | OpenAIRE |
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