Analysis and Optimized Design of a Novel Compact Orthogonal Controllable Reactor

High-Frequency and High-Current Transmission Techniques for Multiple Earth Electrical Characteristic Measurement Systems Based on Adaptive Impedance Matching through Phase Comparison

“…Thyristor-controlled reactors and PWM-controllable reactors incur higher costs under high-voltage conditions, and the introduction of power electronic devices may generate harmonics. The construction of cooling systems for superconducting controllable reactors is challenging [19][20][21]. Therefore, this study focuses on designing a magnetically controlled, high-current precisely controllable reactor, as depicted in Figure 5.…”

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

“…Additionally, its usage can be extended to reactive power compensation, harmonic filtering, and other power systemrelated applications. Different configurations for the realization of this technique have been proposed in previous literature, such as in [56][57][58][59][60][61][62][63][64][65][66][67].…”

“…The insertion of a small air gap can increase the inductance's tunability range and extend the inductor's power range [59]. On the other hand, a larger air gap can have a negative impact on the inductance tunability range, resulting in a reduced range [58]. The two cores can either be constructed of the same material or different materials, depending on the requirements of the application.…”

“…12. As demonstrated by the practical measurements provided in [58,60,67], the inductance varies in an inverse non-linear manner; initially, an increase in DC bias current will result in a sharp drop in the inductance, and subsequent increases in the DC bias current will cause an insignificant decrease in the inductance. The copper losses in the auxiliary winding are equal to the square of the auxiliary winding's DC bias current multiplied by the resistance of the auxiliary winding.…”

“…Instead of raising the auxiliary winding DC bias current to increase the DC magnetization force because the losses are directly proportional to the squared number of the DC bias current, increasing the number of turns of the auxiliary winding can increase the DC magnetization force without contributing considerably to the overall losses since it is directly proportional to the value of resistance. Furthermore, when the shared volume between the main and auxiliary cores increases, a wider range for the virtual air gap length may be accomplished, increasing the degree of freedom in inductance tuning [56,58].…”