Energy supply device for a switch machine and method for supplying energy to and controlling a switch machine

1. An energy supply device configured to supply energy to, and to control, a switch machine, the energy supply device comprising:

an inverter configured to receive a DC voltage and to convert the received DC voltage to an AC voltage to supply energy to, and to control the switch machine, the switch machine controlled by adjusting a phase angle of said AC voltage to control a direction of rotation of the switch machine.

2. The energy supply device according to claim 1 , wherein said energy supply device includes at least one processing device configured to control said inverter in converting the DC voltage to the AC voltage.

3. The energy supply device according to claim 2 , wherein said at least one processing device is configured to control said inverter to change the phase angle of the AC voltage.

4. The energy supply device according to claim 1 , further comprising at least one monitoring device, said at least one monitoring device configured to measure the DC voltage and/or the AC voltage and/or to measure a current at an input and/or an output of said inverter.

5. The energy supply device according to claim 1 , wherein said energy supply device includes further inverters configured to receive the DC voltage and to convert the received DC voltage to further AC voltages for supplying energy to, and controlling, the switch machine; and at least four contacts for connecting the inverters with the switch machine.

6. The energy supply device according to claim 1 , further comprising at least one communication apparatus which is configured to receive advance information relating to activation of the switch machine.

7. The energy supply device according to claim 1 , further comprising at least one evaluator configured to evaluate position contacts of the switch machine.

8. The energy supply device according to claim 7 , further comprising at least one circuit for preventing contact problems on said position contacts, said at least one circuit is configured for short-term provision of a higher current and/or a higher voltage to said position contacts.

9. The energy supply device according to claim 8 , wherein at least one of said evaluator or said circuit is disposed in a separate housing.

10. A switch for a railway system, the switch comprising:

at least one switch machine; and

at least one energy supply device according to claim 1 , configured to be fed with a DC voltage and to provide an AC voltage, to supply energy to, and to control, said switch machine.

11. A method for supplying energy to and controlling a switch machine of a railway switch, which comprises the steps of:

receiving, at an inverter of an energy supply device, a DC voltage;

converting, at the inverter, the DC voltage into an AC voltage; and

using the AC voltage to supply enemy to, and to control, the switch machine, the switch machine being controlled by adjusting a phase angle of said AC voltage to control a direction of movement of the switch machine.

12. The method according to claim 11 , activating the switch machine using the AC voltage.

13. The method according to claim 11 , which further comprises receiving information on an activation of the switch machine.