ALTERNATING CURRENT POWER SUPPLY DEVICE AND METHOD OF CONTROLLING SAME
First Claim
1. An alternating current power supply device comprising:
- a direct current power supply for generating direct current power;
a plurality of parallel direct current to alternating current converters electrically connected to the direct current power supply, for converting the direct current power generated by the direct current power supply into alternating current power and supplying the alternating current power to a load; and
a controller for controlling operation of the direct current to alternating current converters;
wherein of n (n;
a natural number of 2 or greater) direct current to alternating current converters, capacity A(m) of the mth (m;
a natural number, 1≦
m≦
n) direct current to alternating current converter is related to rated output W of the direct current power supply by A(m)=2 mW/n(n+1).
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Accused Products
Abstract
An alternating current power supply device comprises a DC power supply for generating direct current power, a plurality of, e.g., three first DC/AC inverter to third DC/AC inverter which are arranged in parallel and electrically connected to the DC power supply, for converting the direct current power generated by the DC power supply into alternating current power and supplying the alternating current power to a load, and a control unit for controlling the driving of the first DC/AC inverter to the third DC/AC inverter. The capacitance A of the first DC/AC inverter is set to W/6, the capacitance A of the second DC/AC inverter is set to W/3, and the capacitance A of the third DC/AC inverter is set to W/2.
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Citations
20 Claims
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1. An alternating current power supply device comprising:
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a direct current power supply for generating direct current power; a plurality of parallel direct current to alternating current converters electrically connected to the direct current power supply, for converting the direct current power generated by the direct current power supply into alternating current power and supplying the alternating current power to a load; and a controller for controlling operation of the direct current to alternating current converters; wherein of n (n;
a natural number of 2 or greater) direct current to alternating current converters, capacity A(m) of the mth (m;
a natural number, 1≦
m≦
n) direct current to alternating current converter is related to rated output W of the direct current power supply by A(m)=2 mW/n(n+1). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of controlling an alternating current power supply device including:
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a direct current power supply for generating direct current power; a plurality of parallel direct current to alternating current converters electrically connected to the direct current power supply, for converting the direct current power generated by the direct current power supply into alternating current power and supplying the alternating current power to a load; and a controller for controlling operation of the direct current to alternating current converters; wherein of n (n;
a natural number of 2 or greater) direct current to alternating current converters, capacity A(m) of the mth (m;
a natural number, 1≦
m≦
n) direct current to alternating current converter is related to rated output W of the direct current power supply by A(m)=2 mW/n(n+1);the method comprising; a first step of detecting a demanded load power which is a demanded power required by the load; a second step of setting a combination of the direct current to alternating current converters for operation depending on the detected demanded load power; a third step of determining whether there are a plurality of combinations or not; and a fourth step of, if it is judged that there are a plurality of combinations, selecting one of the combinations. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification