发明名称 |
METHOD AND ARRANGEMENT TO DETERMINE THE CELL CAPACITOR VOLTAGE OF A CELL OF A MULTI-CELL POWER CONVERTER |
摘要 |
An arrangement to determine a cell capacitor voltage value (Udc) of a cell (10") of a multi-cell power converter comprises the cell (10") and a control unit (28). The cell (10") itself comprises four power electronic valves (1-4) interconnected as a full-bridge converter having a first and a second phase leg, where each phase leg comprises a series-connection of two (1, 3; 2, 4) of the four power electronic valves and where the connection point (6; 7) between the two power electronic valves of each phase leg is externally connectable, a cell capacitor (5) being connected in parallel to the first and the second phase legs, and four gate units (16-19), each being connected to a corresponding one of the power electronic valves (1-4) as well as to the control unit (28). Each of the four gate units (16-19) comprises a voltage measurement unit (24-27) adapted to take a continuous voltage measurement across the corresponding power electronic valve, and each of the four gate units (16-19) is adapted to transmit its continuous voltage measurement. The control unit (28) is adapted to receive from each of the four gate units (16-19) its continuous voltage measurement and to determine the cell capacitor voltage value (Udc) based on at least one of these voltage measurements. |
申请公布号 |
CA2759818(A1) |
申请公布日期 |
2010.11.11 |
申请号 |
CA20092759818 |
申请日期 |
2009.05.07 |
申请人 |
ABB TECHNOLOGY AG |
发明人 |
CHIMENTO, FILIPPO;DIJKHUIZEN, FRANS;HASLER, JEAN-PHILIPPE;HOSINI, FALAH;JONSSON, TOMAS;LUNDBERG, PETER;MONGE, MAURO;NORRGA, STAFFAN;SVENSSON, JAN;TINGLOW, FREDRIK |
分类号 |
H02M7/49 |
主分类号 |
H02M7/49 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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