Control apparatus capable of economically and reliably controlling electric generator
First Claim
1. A control apparatus for an electric generator, wherein the electric generator is driven by an engine and configured to charge an electric energy storage device and feed an electrical load, the control apparatus comprising:
- a power generation cost determiner working to determine a power generation cost of the electric generator based on parameters representative of operating condition of the engine and an amount of electric power generated by the electric generator;
a threshold determiner working to determine a threshold of power generation cost as a function of a State of Charge (SOC) of the electric energy storage device;
a comparator working to compare the power generation cost of the electric generator with the threshold of power generation cost; and
a controller working to control the electric generator to generate;
an increased amount of electric power, if the power generation cost of the electric generator is determined by the comparator as being lower than the threshold, so as to both feed the electrical load and charge the electric energy storage device, anda decreased amount of electric power, if the power generation cost of the electric generator is determined by the comparator as being higher than the threshold, so as to allow the electric energy storage device to discharge to feed the electrical load.
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Accused Products
Abstract
According to the present invention, a control apparatus for an electric generator includes a power generation cost determiner determining a power generation cost of the generator, a threshold determiner determining a threshold of power generation cost as a function of a state of charge of an electric energy storage device, a comparator comparing the power generation cost of the generator with the threshold, and a controller. When the power generation cost of the generator is lower than the threshold, the controller controls the generator to generate an increased amount of electric power, so as to both charge the electric energy storage device and feed an electrical load. Otherwise, when the power generation cost of the generator is higher than the threshold, the controller controls the generator to generate a decreased amount of electric power, so as to allow the electric energy storage device to discharge to feed the electrical load.
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Citations
27 Claims
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1. A control apparatus for an electric generator, wherein the electric generator is driven by an engine and configured to charge an electric energy storage device and feed an electrical load, the control apparatus comprising:
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a power generation cost determiner working to determine a power generation cost of the electric generator based on parameters representative of operating condition of the engine and an amount of electric power generated by the electric generator; a threshold determiner working to determine a threshold of power generation cost as a function of a State of Charge (SOC) of the electric energy storage device; a comparator working to compare the power generation cost of the electric generator with the threshold of power generation cost; and a controller working to control the electric generator to generate; an increased amount of electric power, if the power generation cost of the electric generator is determined by the comparator as being lower than the threshold, so as to both feed the electrical load and charge the electric energy storage device, and a decreased amount of electric power, if the power generation cost of the electric generator is determined by the comparator as being higher than the threshold, so as to allow the electric energy storage device to discharge to feed the electrical load. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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Specification