Method of cooling a hybrid power system
First Claim
1. A method of controlling a cooling system for a hybrid power system, the method comprising:
- providing within a single vehicle, a cooling circuit for a first AC power source and a cooling circuit for a second AC power source;
circulating coolant through the first AC power source cooling circuit during activation of the first AC power source; and
pumping coolant through the second AC power source cooling circuit whenever a predetermined portion of the second AC power source reaches a predetermined temperature level.
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Accused Products
Abstract
A method of controlling a cooling system is provided for a hybrid power system that includes an engine that employs an engine cooling circuit to deliver coolant to the engine, the engine cooling circuit including a radiator and a main fan to draw air through the radiator. When the hybrid power system further includes an inverter, then the inverter is cooled via an inverter cooling circuit that is formulated as one portion of the cooling system to deliver coolant to the inverter, the inverter cooling circuit including a heat exchanger located such that the main fan draws air through the heat exchanger when the main fan is active. The cooling system also includes a secondary fan to selectively draw air though the heat exchanger during operation of an inverter cooling circuit coolant pump.
53 Citations
20 Claims
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1. A method of controlling a cooling system for a hybrid power system, the method comprising:
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providing within a single vehicle, a cooling circuit for a first AC power source and a cooling circuit for a second AC power source; circulating coolant through the first AC power source cooling circuit during activation of the first AC power source; and pumping coolant through the second AC power source cooling circuit whenever a predetermined portion of the second AC power source reaches a predetermined temperature level. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of controlling a cooling system for a hybrid power system, the method comprising:
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providing within a single vehicle, a cooling circuit for an engine generator unit configured to generate AC power and a cooling circuit for a DC power to AC power converter; circulating coolant through the engine generator unit cooling circuit during activation of the engine generator unit; and pumping coolant through the DC power to AC power converter cooling circuit whenever a predetermined portion of the DC power to AC power converter reaches a predetermined temperature level. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A method of controlling a cooling system, the method comprising:
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providing a cooling circuit for an engine generator unit configured within a vehicle to generate AC power and a cooling circuit for an inverter configured within the vehicle to convert DC battery power to AC power; circulating coolant through the engine generator unit cooling circuit during activation of the engine generator unit; and pumping coolant through the inverter cooling circuit whenever a predetermined portion of the inverter reaches a predetermined temperature level. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification