| 摘要 |
<p>PURPOSE:To enable to stably raise a regenerative brake irrespective of the magnitude of a regenerative load by integrating the difference voltage between the voltage of a filter capacitor and the maximum allowable voltage from the brake notch closing time as a command value of an armature current. CONSTITUTION:A function calculator 11 outputs a request current limit value IC0 from a brake force command value BF and a speed N. An integrator 14 obtains the difference voltage between the voltage EC of a filter capacitor 4 and the maximum allowable voltage EC2, integrates in synchronization with the input of a brake notch closing signal BN, and outputs the primary command value IC1 of an armature current as the control signal value of a chopper 8. A limiter 15 suppresses the primary command value IC1 of the armature current to the request current limit value IC0 or lower, and outputs a command value IC of the armature current as a control signal of the chopper 8.</p> |
