Communication in a converter device
A method can be used to synchronize time between nodes of a converter device for high voltage power conversion. The method is performed in a first node of the converter device and includes receiving a time reference from a second node of the converter device, obtaining a delay value for receiving time references from the second node, determining a compensated time by adding the delay value to the time reference, and setting a clock in the first node to be the compensated time.
1. A method for synchronizing time between a plurality of nodes of a converter device for high voltage power conversion, the method being performed in a first node of the converter device and comprising:
receiving a time reference from a second node of the converter device;
obtaining a delay value for receiving time references from the second node;
determining a compensated time by adding the delay value to the time reference; and
setting a clock in the first node to be the compensated time.
2. The method according to claim 1 , further comprising sending the compensated time as a time reference to a third node of the converter device.
3. The method according to claim 1 , wherein the delay value considers both a communication delay and a processing delay.
4. The method according to claim 1 , wherein a plurality of time references in the converter device is based on a master clock source.
5. The method according to claim 4 , wherein all time references in the converter device are based on the master clock source.
6. A computer readable medium storing computer program code which, when run on the first node causes the first node to perform the method of claim 1 .
7. A first node for synchronizing time between a plurality of nodes of a converter device for high voltage power conversion, the first node being one of the plurality of nodes, the first node comprising:
a processor; and
a non-transitory memory storing instructions that, when executed by the processor, cause the first node to:
receive a time reference from a second node of the plurality of nodes;
obtain a delay value for receiving time references from the second node;
determine a compensated time by adding the delay value to the time reference; and
set a clock in the first node to be the compensated time.
8. The first node according to claim 7 , wherein the instructions further cause the first node to send the compensated time as a time reference to a third node of the plurality of nodes.
9. The first node according to claim 7 , wherein the delay value considers both a communication delay and a processing delay.
10. The first node according to claim 7 , wherein a plurality of time references in the converter device are based on a master clock source.
11. The first node according to claim 10 , wherein all time references in the converter device are based on the master clock source.
12. A method for synchronizing time between a plurality of nodes of a converter device for high voltage power conversions:
receiving, by a first node, a first time reference from a second node of the converter device;
obtaining, by the first node, a first delay value for receiving time references from the second node;
determining, by the first node, a first compensated time by adding the first delay value to the first time reference;
setting a clock in the first node to be the first compensated time;
sending the first compensated time as a second time reference to a third node of the converter device;
receiving, by the third node, the second time reference from the first node of the converter device;
obtaining, by the third node, a second delay value for receiving time references from the third node;
determining, by the third node, a second compensated time by adding the second delay value to the second time reference;
setting a clock in the third node to be the second compensated time; and
sending the second compensated time as a time reference to a fourth node of the converter device.