초록 ▼

A turbine helper drive apparatus includes a turbine for driving a load, a motor coupled to the turbine, and a power converter for controlling an output from the motor based on a predetermined power reference. The power converter controls the motor so that the motor performs either a motoring operati

A turbine helper drive apparatus includes a turbine for driving a load, a motor coupled to the turbine, and a power converter for controlling an output from the motor based on a predetermined power reference. The power converter controls the motor so that the motor performs either a motoring operation, wherein the motor drives the load together with the turbine, or a regenerating operation, wherein the motor serves as a load for the turbine to generate an electric power.

대표청구항 ▼

A turbine helper drive apparatus adapted to an induction motor coupled to a turbine and its load, and having power converting means for changing an input power supplied to said induction motor in accordance with a predetermined preset power, so that load distribution of said load for said turbine an

A turbine helper drive apparatus adapted to an induction motor coupled to a turbine and its load, and having power converting means for changing an input power supplied to said induction motor in accordance with a predetermined preset power, so that load distribution of said load for said turbine and said induction motor is changed, said power converting means comprising: power detection means for detecting the input power to said induction motor; speed detecting means for detecting a rotational speed of said induction motor; magnetic flux detecting means for detecting a magnetic flux of said induction motor; a first divider for generating a torque reference signal by dividing the preset power by the rotational speed; a second divider for generating a slip frequency reference signal by dividing the torque reference signal by the magnetic flux; and power control means for controlling the input power to said induction motor in accordance with the slip frequency reference signal and the predetermined preset power.