METHOD AND APPARATUS FOR ADJUSTING WAKEUP TIME IN ELECTRICAL POWER CONVERTER SYSTEMS AND TRANSFORMER ISOLATION
First Claim
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1. A method of operating an electrical power converter system to transform power for a power source, the method comprising:
- determining an amount of power available from a power source at approximately a startup time;
adjusting a value of a wakeup voltage parameter of the electrical power converter system from a value of the wakeup voltage parameter of the electrical power converter system for a previous period based at least in part on the determined amount of power available from the power source at approximately the startup time by calculating the value of the wakeup voltage parameter in real time based on the amount of power available from the power source at approximately the startup time relative to a startup power threshold;
selecting between the value of the wakeup voltage parameter calculated in real time and a value of the wakeup voltage parameter stored in a historically based lookup table, wherein the value of the wakeup voltage parameter from the historically based lookup table is based at least in part on a real time clock; and
in response to the determined amount of power from the power source surpassing a threshold corresponding to the wakeup voltage parameter, activating power electronics that are brought out of a sleep state.
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Abstract
An electrical power converter system adjusts a wakeup voltage periodically, to permit earlier connection and/or operation, to increase performance. The electrical power converter system selects between a mathematically adjusted wakeup voltage based on at least one previous period, and a table derived wakeup voltage that takes into account historical information. The electrical power converter system is particularly suited to applications with periodicity such as solar based photovoltaic power generation.
37 Citations
11 Claims
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1. A method of operating an electrical power converter system to transform power for a power source, the method comprising:
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determining an amount of power available from a power source at approximately a startup time; adjusting a value of a wakeup voltage parameter of the electrical power converter system from a value of the wakeup voltage parameter of the electrical power converter system for a previous period based at least in part on the determined amount of power available from the power source at approximately the startup time by calculating the value of the wakeup voltage parameter in real time based on the amount of power available from the power source at approximately the startup time relative to a startup power threshold; selecting between the value of the wakeup voltage parameter calculated in real time and a value of the wakeup voltage parameter stored in a historically based lookup table, wherein the value of the wakeup voltage parameter from the historically based lookup table is based at least in part on a real time clock; and in response to the determined amount of power from the power source surpassing a threshold corresponding to the wakeup voltage parameter, activating power electronics that are brought out of a sleep state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An electrical power converter system, comprising:
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at least a first switch operable between an ON state and an OFF state; and a controller coupled to control the at least first switch, and configured to determine an amount of power available from a power source at approximately a startup time; and
adjust a value of a wakeup voltage parameter of the electrical power converter system from a value of the wakeup voltage parameter of the electrical power converter system for a previous period based at least in part on the determined amount of power available from the power source at approximately the startup time such that in response to the determined amount of power from the power source surpassing a threshold corresponding to the wakeup voltage parameter, power electronics are brought out of a sleep state and activated; andselect between a value of the wakeup voltage parameter calculated in real time and a value of the wakeup voltage parameter stored in a historically based lookup table, wherein the value of the wakeup voltage parameter from the historically based lookup table is based at least in part on a real world time. - View Dependent Claims (10, 11)
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Specification