Patent ID: 7451842
Filing Date: 2008-11-18
Classification: B60L,Y02T

Abstract:
1. A control system for an electric motor car, comprising: a variable-voltage variable-frequency (VVVF) inverter configured to receive DC power from an overhead line or a third rail, convert the received DC power into AC power under variable-voltage, variable-frequency control, and supply the AC power to an AC motor; a constant-voltage constant-frequency (CVCF) inverter configured to receive the DC power and supply constant-voltage, constant-frequency power to auxiliary devices of the electric motor car; a power generation unit configured to supply power to the VVVF inverter and the CVCF inverter; a power storage unit configured to store power from the power generation unit and the VVVF inverter; and a power management unit configured to centrally control power consumption and power supply, the power management unit conducting: