Random Restart Apparatus and Method for Electric Vehicle Service Equipment
First Claim
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1. An electric vehicle (EV) charger restart method, comprising:
- determining a respective restart delay time (Tdel) for each of one or more electric vehicle chargers, each respective restart delay time (Tdel) comprising a respective delay time increment based on a generated random number and a group time interval for reset (Tint); and
initiating a restart of at least one of the one or more electric vehicle chargers, if an existing time (Tnow) is greater than an established time line start time (TPOK) plus Tdel.
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Abstract
An electric vehicle (EV) charger restart method includes determining a respective restart delay time (Tdel) for each of one or more electric vehicle chargers, each respective restart delay time (Tdel) comprising a respective delay time increment based on a generated random number and a group time interval for reset (Tint) (block 212), and initiating a restart of at least one of the one or more electric vehicle chargers, if an existing time (Tnow) is greater than an established time line start time (TPOK) plus Tdel.
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Citations
28 Claims
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1. An electric vehicle (EV) charger restart method, comprising:
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determining a respective restart delay time (Tdel) for each of one or more electric vehicle chargers, each respective restart delay time (Tdel) comprising a respective delay time increment based on a generated random number and a group time interval for reset (Tint); and initiating a restart of at least one of the one or more electric vehicle chargers, if an existing time (Tnow) is greater than an established time line start time (TPOK) plus Tdel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A device comprising a processing module for restarting one or more electric vehicle chargers, wherein the processing module comprises a processor having addressable memory, and wherein the processor is configured to:
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determine if grid power quality is acceptable; set an established time line start time (TPOK) for the at least one electric vehicle charger in response to determining grid power quality is acceptable; determine a respective restart delay time (Tdel) for each of one or more electric vehicle chargers, the respective restart delay time (Tdel) comprising a delay time increment based on a respective generated random number function and a group time interval for reset (Tint); and initiate a restart of at least one of the one or more electric vehicle chargers, if a current time (Tnow) is greater than Tdel plus TPOK. - View Dependent Claims (21, 22)
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23. A method, comprising:
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receiving in an electric vehicle (EV) charger a PMU power quality signal; determining a difference between the PMU power quality signal and a reference PMU power quality signal; if the determined difference between the PMU power quality signal and a reference PMU power quality signal is within a threshold, then setting an established time line start time (TPOK) for the at least one electric vehicle charger; determining a respective restart delay time (Tdel) for the EV charger, the restart delay time (Tdel) comprising a respective delay time increment based on a generated random number and a group time interval for reset (T); and initiating a restart of the EV charger if an existing time (Tnow) is greater than TPOK plus Tdel - View Dependent Claims (24, 25, 26, 27, 28)
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Specification