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US 6,493,246 B2Granted
Power conversion with stop conversion during low integrated power conditions
AssigneeCanon Kabushiki Kaisha
InventorsMasaki Suzui, Nobuyoshi Takehara
Life of this patent
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AssigneeCanon Kabushiki Kaisha
InventorsMasaki Suzui, Nobuyoshi Takehara
Estimating the term…
In a solar power generation apparatus, when power necessary for a control circuit and the like is supplied from the load side of an inverter, a period from when the input voltage becomes lower than a threshold voltage at which the inverter should be stopped to when the inverter is stopped after the elapse of a predetermined time includes a period when power consumed by the inverter become larger than power output from the inverter, i.e., power is wasted. To solve this problem, input power is integrated for a predetermined time to calculate integrated electric energy. The calculated integrated electric energy W1 is compared with a threshold value Y1. If W1<Y1, a gate block signal is output to stop the operation of the inverter. As the threshold value Y1, a value corresponding to the product of the non-load power of the inverter and the predetermined time T1 is set.
A power converting apparatus comprising:
A power converting apparatus comprising:
A generator for generating electric power comprising:
A generator for generating electric power comprising:
A control method of a power converting apparatus for converting direct current power to alternating current power, comprising the steps of:
A control method of a power converting apparatus for converting input direct current power to direct current power having a different voltage, comprising the steps of:
Dependencies are inferred from the claim text.