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Boustras, G, Bratskas, R, Tokakis, V and Efstathiades, A (2011) Safety awareness of practitioners in the Cypriot manufacturing sector. Journal of Engineering, Design and Technology, 9(01), 19–31.

Bullen, P and Love, P (2011) Factors influencing the adaptive re-use of buildings. Journal of Engineering, Design and Technology, 9(01), 32–46.

Dhandapani, K and Sathi, R R (2011) Embedded controlled low-frequency AC to high-frequency AC converter fed induction heater. Journal of Engineering, Design and Technology, 9(01), 7–18.

  • Type: Journal Article
  • Keywords: electric converters; electric power systems; electronic switching systems; frequencies
  • ISBN/ISSN: 1726-0531
  • URL: https://doi.org/10.1108/17260531111121431
  • Abstract:
    Purpose – The purpose of this paper is to present, a novel boost-active clamp bridge single stage high-frequency zero voltage soft-switching-pulse width modulation (ZVS-PWM) inverter, which converts the utility frequency AC power into high-frequency AC power with an embedded controller. This single stage high-frequency inverter is composed of a single-phase diode bridge rectifier, a non-smoothing filter, a boost-active clamp bridge type ZVS-PWM high-frequency inverter, and an induction-heated load with planar type litz wire working coil assembly. Also, the paper discusses how to extend the soft-switching operation ranges and improve power conversion efficiency. Design/methodology/approach – The proposed converter is simulated and it is implemented using embedded controller. Findings – It was found that the single stage high-frequency induction heating (IH) inverter using boosted voltage function can eliminate the DC and low-frequency components of the working coil current and reduce the power dissipation of the circuit components and switching devices. Originality/value – The paper shows that the PWM HF inverter is preferred for IH, since it has reduced switching losses and switching stresses. The paper can be extended to PC-based wireless control, which can be part of a distributed control system in major industrial heating systems.

Ghiasi, V, Omar, H, Huat, B B K, Muniandi, R and Yusof, Z B M (2011) Risk management overview of tunnels using numerical modelling. Journal of Engineering, Design and Technology, 9(01), 110–24.

Harran, M (2011) Dominant feedback practices: shaping engineer literacy perceptions. Journal of Engineering, Design and Technology, 9(01), 85–109.

Jayaram, S and Gonzalez, E (2011) Design and construction of a low-cost economical thermal vacuum chamber for spacecraft environmental testing. Journal of Engineering, Design and Technology, 9(01), 47–62.

Sharma, D K, Kaushik, B K and Sharma, R K (2011) VLSI interconnects and their testing: prospects and challenges ahead. Journal of Engineering, Design and Technology, 9(01), 63–84.