Variable-Inductor Based Tuning Method for Multiple-Relay Wireless Power Transfer System in Composite Insulator

A Design Method to Minimize Detuning for Double-Sided LCC-Compensated IPT System Improving Efficiency Versus Air Gap Variation

“…A detailed comparison table is given in TABLE IV to show the superiority of the proposed method. Compared to the traditional impedance adjustment method (Capacitor matrix [13], variable capacitor [14]- [16], and variable inductor [17]- [18], [20]), the extra switch components and DC source can be saved. Although the extra LC filter is required in the proposed method, the constant output regulation, primary tuning, and secondary tuning can be simultaneously achieved compared with the frequency control methods [21]- [23].…”

“…However, those methods achieved by regulating the conduction time of MOSFETs will increase the extra switching losses. As an alternative, a variable inductor can be employed by continuously altering the dc b ias through the auxiliary winding in [17]- [18]. Nevertheless, this method can encounter problems, such as core saturation, high power losses, and high harmonics [19], especially in a large self-inductance variation.…”

A Review of Tunable Inductors for Power Electronics: Techniques and Applications

“…Variable inductors have been employed in a variety of power electronic converter applications, mostly based on the previously stated techniques. Lighting drivers [70,[107][108][109][110][111][112][113][114][115][116], resonant converters [79,80,[117][118][119][120][121][122][123][124][125][126][127][128][129], dual-active-bridge converters [72,130,131], wireless power transmission [54,[132][133][134][135][136][137][138], reactive power compensation and voltage control in power systems [139][140][141], and maximum power point tracking (MPPT) [142,143] are all examples of applications that utilize the tuning inductance concept. Emphasizing the advantages and drawbacks of employing variable-inductance inductors in these converters is essential.…”