Patent ID: 8207708
Filing Date: 2012-06-26
Classification: B60K,B60L,B60W,B60Y,E02F,Y02T

Abstract:
1. A power generation control method of a hybrid construction machine provided with an engine and a generator motor coupled to each other, an inverter connected to the generator motor for driving the generator motor, a swing motor for swinging a part of a body relative to other parts, a swing inverter connected to the swing motor for driving the swing motor, and a capacitor connected in parallel to the inverter and the swing inverter respectively for storing electric power generated by the generator motor and the swing motor and supplying electric power to the generator motor and the swing motor, the method comprising: a swing power calculating step of sequentially calculating swing power corresponding to electric power consumed by the swing motor; a swing power converting step of converting a value of the swing power at the time of power running of the swing motor calculated at the swing power calculating step to a smaller value; a power generation command generating step of sequentially generating a power generation command of the generator motor using the value converted at the swing power converting step; and an outputting step of outputting the power generation command generated at the power generation command generating step to the inverter, wherein a swing power of the swing motor at the power running is supplied from the generator motor and the capacitor.