| 摘要 |
<p>PURPOSE:To enable smooth regeneration brake control to be performed, by finding the action starting nominal value of a main motor voltage correction circuit according to main motor voltage or rolling stock speed. CONSTITUTION:By a main motor voltage correction circuit 12, under the condition of (filter condenser voltage ECF-main motor voltage EM)<= a nominal value, in proportion to its deviation quantity, a correction value VP is added to a main motor current command value IP. Then, the nominal value is calculated by a nominal value arithmetic circuit 14 from the main motor voltage EM or rolling stock speed. As a result, smooth brake control can be performed even with a high-speed regeneration brake.</p> |
