| 发明名称 | Voltage control device and voltage control method | ||
| 摘要 | A voltage control device includes: a capacitor configured to supply power to a rotating electrical machine; an inverter connected to the rotating electrical machine; a transformer coupled booster including two voltage source inverters of which direct current terminals are connected in series to have additive polarity, and a transformer configured to couple alternate current terminals of the two voltage source inverters and having a predetermined leak inductance, wherein one of the two voltage source inverters is connected to the capacitor in parallel, and the transformer coupled booster outputs, to the inverter, a direct-current voltage which is a raised capacitor voltage of the capacitor; and a controller configured to generate and output an instruction value of the direct-current voltage at a time the rotating electrical machine is in a drive state and the output of the transformer coupled booster is less than a predetermined output. | ||
| 申请公布号 | US9621098(B2) | 申请公布日期 | 2017.04.11 |
| 申请号 | US201514783541 | 申请日期 | 2015.05.29 |
| 申请人 | Komatsu Ltd. | 发明人 | Sagawa Tomohiko;Yoshida Tetsuo |
| 分类号 | H02P25/08 | 主分类号 | H02P25/08 |
| 代理机构 | Locke Lord LLP | 代理人 | Locke Lord LLP |
| 主权项 | 1. A voltage control device comprising: a capacitor configured to supply power to a rotating electrical machine; an inverter connected to the rotating electrical machine; a transformer coupled booster including: two voltage source inverters of which direct current terminals are connected in series to have additive polarity; and a transformer configured to couple alternate current terminals of the two voltage source inverters, the transformer having a predetermined leak inductance, wherein one of the two voltage source inverters is connected to the capacitor in parallel, and the transformer coupled booster outputs, to the inverter, a direct-current voltage which is a raised capacitor voltage of the capacitor; and a controller configured to generate and output an instruction value of the direct-current voltage which is variable corresponding to the capacitor voltage within a predetermined range, in a range less than a predetermined upper limit voltage of the direct-current voltage and not less than a predetermined lower limit voltage of the direct-current voltage at a time the rotating electrical machine is in a drive state and the output of the transformer coupled booster is less than a predetermined output which is less than an output limit of the transformer coupled booster. | ||
| 地址 | Tokyo JP | ||