Fast switch device
Disclosed is a fast switch device including: a reactor that moves to an open position where the switch is opened and a close position where the switch is closed; an open coil portion that drives the reactor to the open position by virtue of an eddy current component; a close coil portion that drives the reactor the close position by virtue of an eddy current component; and a controller that performs control such that an electric current is applied to the close coil portion oppositely to a direction of an electric current flowing through the open coil portion in order to brake the reactor during an open operation for driving the reactor to the open position, and an electric current is applied to the open coil portion oppositely to a direction of an electric current flowing through the close coil portion.
1. A switch device, comprising:
a reactor configured to move to an open position where the switch is opened and to a close position where the switch is closed;
an open coil portion configured to drive the reactor to the open position by virtue of an eddy current; and
a close coil portion configured to drive the reactor to the close position by virtue of an eddy current,
wherein the switch is configured to apply an electric current to the close coil portion oppositely to a direction of an electric current flowing through the open coil portion in order to brake the reactor during an open operation for driving the reactor to the open position, and further configured to apply an electric current to the open coil portion oppositely to a direction of an electric current flowing through the close coil portion in order to brake the reactor during a close operation for driving the reactor to the close position,
wherein the switch is configured to determine a timing of applying the electric current for braking the reactor based on a position of the reactor and a current rise time of the electric current flowing through the open coil portion or the close coil portion,
wherein the open coil portion has a first Thomson coil and a first capacitor connected to the first Thomson coil in parallel, and the open coil portion causes an electric current to flow to the first Thomson coil by using a voltage stored in the first capacitor to drive the reactor toward the open position by virtue of an eddy current induced by the electric current flowing through the first Thomson coil,
wherein the close coil portion has a second Thomson coil and a second capacitor connected to the second Thomson coil in parallel, and the close coil portion causes an electric current to flow to the second Thomson coil by using a voltage stored in the second capacitor to drive the reactor toward the close position by virtue of an eddy current induced by the electric current flowing through the second Thomson coil, and
wherein the second Thomson coil has fewer turns and lesser resistance than those of the first Thomson coil.
2. The switch device according to claim 1 , further comprising a first armature plate that is connected to the reactor and generates a driving force by virtue of an eddy current component as a magnetic flux is generated in the first Thomson coil.
3. The switch device according to claim 1 , further comprising a second armature plate that is connected to the reactor and generates a driving force by virtue of an eddy current as a magnetic flux is generated in the second Thomson coil.
4. The switch device according to claim 1 , wherein the switch is configured to cut off the electric current for braking the reactor as the open operation or the close operation is completed.