IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0058355
(2005-02-16)
|
등록번호 |
US-7456519
(2008-11-25)
|
우선권정보 |
JP-2004-221681(2004-07-29) |
발명자
/ 주소 |
- Takeda,Kenji
- Ichinose,Masaya
- Futami,Motoo
- Komachiya,Masahiro
|
출원인 / 주소 |
|
대리인 / 주소 |
Antonelli, Terry, Stout & Kraus, LLP.
|
인용정보 |
피인용 횟수 :
13 인용 특허 :
4 |
초록
▼
A power conversion system includes a power generating apparatus, an auxiliary generation device that consumes power, an auxiliary-devised power source, a secondary battery device chargeable and dischargeable with power generated by the power generating apparatus, a bilateral DC/AC inverter that caus
A power conversion system includes a power generating apparatus, an auxiliary generation device that consumes power, an auxiliary-devised power source, a secondary battery device chargeable and dischargeable with power generated by the power generating apparatus, a bilateral DC/AC inverter that causes the power generating apparatus to cooperate with a commercial AC power source, and a switch unit provided between the commercial AC power source and the bilateral DC/AC inverter, DC terminals of the bilateral DC/AC inverter and an input of the auxiliary-devised power source, when the power generating apparatus generates no power, the switch unit is opened, the bilateral DC/AC inverter is stopped, and the voltage supplied from the secondary battery device to the auxiliary-devised power source is lower than that supplied from the secondary battery device to the auxiliary-devised power source when the power generating apparatus generates power.
대표청구항
▼
The invention claimed is: 1. A power conversion system comprising: a power generating apparatus; an auxiliary generation device that consumes a power when the power generating apparatus is started up; an auxiliary-devised power source that supplies a desired voltage to the auxiliary generation devi
The invention claimed is: 1. A power conversion system comprising: a power generating apparatus; an auxiliary generation device that consumes a power when the power generating apparatus is started up; an auxiliary-devised power source that supplies a desired voltage to the auxiliary generation device; a secondary battery device chargeable and dischargeable with power generated by the power generating apparatus; a bilateral DC/DC converter connected to the secondary battery device, for controlling charge-discharge of said secondary battery device; a bilateral DC/AC inverter that causes the power generating apparatus to cooperate with a commercial AC power source; wherein DC terminals of the bilateral DC/AC inverter and inputs of the auxiliary-devised power source are connected to power generating apparatus and the bilateral DC/DC converter; wherein the bilateral DC/DC converter is comprised of a circuit to allow passing of discharge current from the secondary battery device when the bilateral DC/DC converter is stopped; and wherein when the power generating apparatus generates no power, the bilateral DC/AC inverter and the bilateral DC/DC converter are stopped. 2. The power conversion system of claim 1, wherein the power generating apparatus includes a generator and a DC/DC converter, wherein when the power generating apparatus generates power, the DC/DC converter and the bilateral DC/DC converter output DC voltages of not less than the AC amplitude of the commercial AC power source. 3. The power conversion system of claim 1, wherein the voltage supplied to the auxiliary-devised power source when the power generating apparatus generates no power is lower than the voltage supplied to the auxiliary-devised power source when the power generating apparatus generates power. 4. The power conversion system of claim 1, wherein when the power generating apparatus generates no power, the input voltage to the auxiliary-devised power source is lower than the output voltage from the secondary battery. 5. The power conversion system of claim 1, further comprising a first mode in which the input voltage to the auxiliary-devised power source is greater than the AC amplitude of the commercial AC power source, and a second mode in which the input voltage to the auxiliary-devised power source is not greater than the AC amplitude of the commercial AC power source. 6. The power conversion system of claim 1, wherein when the power generating apparatus generates no power, the power from the commercial AC power source is supplied to the auxiliary-devised power source. 7. The power conversion system of claim 6, further comprising a sensing unit for sensing a charging quantity in the secondary battery, and wherein when the power generating apparatus generates no power and the charging quantity in the secondary battery is smaller than a predetermined threshold, the commercial AC power source supplies power via a rectifier to the auxiliary-devised power source. 8. The power conversion system of claim 1, wherein the power generating apparatus includes a fuel cell. 9. The power conversion system of claim 1, wherein the power generating apparatus includes a solid-state macromolecular type fuel cell. 10. A power conversion system comprising: a power generating apparatus; an auxiliary generation device that consumes a power when the power generating apparatus is started up; an auxiliary-devised power source that supplies a desired voltage to the auxiliary generation device; a secondary battery device chargeable and dischargeable with power generated by the power generating apparatus; a bilateral DC/DC converter connected to the secondary battery device, for controlling charge/discharge of said secondary battery device; a bilateral DC/AC inverter that causes the power generating apparatus to cooperate with a commercial AC power source; wherein DC terminals of the bilateral DC/AC inverter and inputs of the auxiliary-devised power source are connected to the power generating apparatus and the bilateral DC/DC converter; wherein a switch unit for short-circuiting is disposed between the input and the output of the bilateral DC/DC converter; and wherein when the power generating apparatus generates no power, the bilateral DC/AC inverter and the bilateral DC/DC converter are stopped, and said switch unit is closed. 11. The power conversion system of claim 10, wherein the power generating apparatus includes a generator and a DC/DC converter, wherein when the power generating apparatus generates power, the DC/DC converter and the bilateral DC/DC converter output DC voltages of not less than the AC amplitude of the commercial AC power source. 12. The power conversion system of claim 10, wherein the voltage supplied to the auxiliary-devised power source when the power generating apparatus generates no power is lower than the voltage supplied to the auxiliary-devised power source when the power generating apparatus generates power. 13. The power conversion system of claim 10, wherein when the power generating apparatus generates no power, the input voltage to the auxiliary-devised power source is lower than the output voltage from the secondary battery. 14. The power conversion system of claim 10, further comprising a sensing unit for sensing a charging quantity in the secondary battery, and wherein when the power generating apparatus generates no power and the charging quantity in the secondary battery is smaller than a predetermined threshold, the commercial AC power source supplies power via a rectifier to the auxiliary-devised power source.
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