Variable Inductances TRIZ Cases

Position-dependent inductance lets DC grid protection isolate faulted branches selectively while keeping unaffected nodes in operation.

A hybrid tap changer pairs conventional taps with semiconductor switching to handle slow grid adjustment and rapid network fluctuations.

Bias-current saturation in an auxiliary core tunes inductance while keeping the main flux path stable through perpendicular flux paths.

Bias-current saturation in an auxiliary core adjusts inductance while keeping the main flux path stable through perpendicular flux paths.

Integrated insulation plates, cam plates, and spring-driven levers simplify vacuum tube actuation for compact, stable on-load voltage regulation.

A flange module and union nut simplify on-load tap changer attachment, cutting installation time and saving space in compact transformers.

Reverse power flow detection lets a tap-changing transformer adapt target voltage gradients to prevent overvoltage and preserve feed power.

A secondary winding and electrical network cancel load current during tap changes to prevent core saturation, reduce arcing, and extend regulator life.

An integrated support column and receiving seat secure the changeover switch, disperse operating forces, and simplify maintenance.

Combining on-load and semiconductor switching lets one tap changer handle slow and millisecond regulation while reducing network perturbations.

Separate semiconductor and mechanical controllers verify switch status before contact actuation, preventing destructive tap short circuits.

Spring-loaded pivoting contacts enable fast double breaking in tap changers, cutting arcing time and removing tie-in resistors.