Karadzinov, Ljupco and Stefanov, Goce (2017) Power Control in Series-Resonant Bridge Inverters. In: IEEE EUROCON 2017, 6-7 July 2017, Ohrid, Macedonia.
Preview |
Text
IEEE_EUROCON_2017_Karadzinov_and _Stefanov_pp341-346.pdf Download (3MB) | Preview |
Abstract
Direct phase or indirect frequency control methods
are used in series-resonant bridge power inverters for induction
heating to maintain maximum power transfer as the load equivalent
electrical parameters change during the heating process. In
these applications, to control the power level it is common to use
the above resonance operating frequency, where only measurement
of the deviation of the phase angle from its reference value
is used to calculate the new bridge switching frequency. Below
resonance is not used since its control is non-linear, has high level
of harmonics and is considered unstable, so no detailed analysis
have been carried out. The paper present mathematical analysis
of the output power, voltage and current phase angle dependence
on the resonant circuit damping frequency when it is excited with
pulse voltage with a different frequency than the resonant one, in
both above and below resonance regions. Based on this analysis,
possibilities of below resonance power control are investigated
and new insight in circuit behavior is presented based on variation
in resonant tank parameter values.
| Item Type: | Conference or Workshop Item (Paper) |
|---|---|
| Subjects: | Engineering and Technology > Electrical engineering, electronic engineering, information engineering |
| Divisions: | Faculty of Electrical Engineering |
| Depositing User: | Goce Stefanov |
| Date Deposited: | 01 Nov 2017 13:43 |
| Last Modified: | 01 Nov 2017 13:43 |
| URI: | https://eprints.ugd.edu.mk/id/eprint/18387 |
Actions (login required)
 |
View Item |