Patent ID: 7834578
Filing Date: 2010-11-16
Classification: B60K,B60L,B60W,Y02T

Abstract:
1. A load driving apparatus, comprising: a first rotating electric machine generating a drive force, a first driving device arranged between a first power supply line and said first rotating electric machine, driving said first rotating electric machine with supply of power from said first power supply line, power generation means connected to said first power supply line for supplying generated power to said first power supply line, an up-conversion device arranged between a second power supply line connected to a DC power source and said first power supply line, boosting voltage of said second power supply line for output to said first power supply line, and control means for outputting an instruction to reduce a torque generated by said first rotating electric machine to said first driving device when a revolution count of said first rotating electric machine exceeds a predetermined limit value, wherein said control means outputs, to said up-conversion device, an instruction to reduce a boosting rate of said up-conversion device when the revolution count of said first rotating electric machine exceeds a predetermined sub-limit value that is at most said predetermined limit value, wherein said power generation means includes wherein said control means maintains the boosting rate of said up-conversion device without outputting, to said up-conversion device, said instruction to reduce the boosting rate of said up-conversion device in a case where said second rotating electric machine is currently halting or in a power running operation when the revolution count of said first rotating electric machine exceeds said predetermined sub-limit value.