Wind-powered thermal power generation system

• US 10,184,451 B2
• Filed: 07/12/2013
• Issued: 01/22/2019
• Est. Priority Date: 07/26/2012
• Status: Active Grant

• Current Assignee: Sumitomo Electric Industries Limited (Sumitomo Corporation)
• Original Assignee: Sumitomo Electric Industries Limited (Sumitomo Corporation)
• Inventors: Okazaki, Toru, Nakamura, Taketsune
• Primary Examiner(s): Nguyen, Viet
• Application Number:
  US14/416,181
• Publication Number:
  US 20150192109A1
• Time in Patent Office: 2,020 Days
• Field of Search: 290 44, 290 55
• CPC Class Codes: F03D 9/00 Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations hybrid wind-photovoltaic energy systems for the generation of electric power H02S10/12
• CPC Class Codes: F03D 9/18 storing heat
• CPC Class Codes: F03D 9/22 the apparatus producing heat
• CPC Class Codes: F03D 9/25 the apparatus being an electrical generator F03D9/22 takes precedence
• CPC Class Codes: Y02E 10/72 Wind turbines with rotation axis in wind direction
• CPC Class Codes: Y02E 70/30 Systems combining energy storage with energy generation of non-fossil origin

Abstract

In a wind-powered thermal power generation system, an induction motor includes a field (rotor) which has a field core coupled to a rotation shaft of the wind turbine and a field conductor, and an armature (stator) which has an armature core arranged on the outer side of the field with a spacing therebetween and an armature winding, and the induction motor is housed in the heat insulating container. A heating medium circulation mechanism circulates, inside the heat insulating container, a heating medium that receives heat generated by the induction motor. A magnetic field control means controls an input current to the armature winding so as to result in slip that produces load torque at the rotor rotating due to rotation of the wind turbine. A power generation portion converts, into electricity, the heat of the heating medium heated by the induction motor.

Claims

1. A wind-powered thermal power generation system, comprising:

a wind turbine;

an induction motor including a field which has a field core and a field conductor arranged therearound, and an armature which has an armature core provided with a salient pole facing the field and an armature winding of three phases wound around the salient pole, and configured such that one of the field and the armature serves as a rotor coupled to a rotation shaft of said wind turbine, and the other serves as a stator;

magnetic field control means for applying a direct current to at least two phases of armature windings among the three phases when said rotor is rotating in conjunction with said rotation shaft as a result of said wind turbine concurrently being rotated by wind,

wherein said magnetic field control means applying the direct current to the at least two phases of armature windings when the wind turbine is being rotated by wind causes slip that forcibly provides load torque to said rotor rotating in conjunction with said rotation shaft that is larger than a rated torque of said induction motor,

wherein said magnetic field control means applying the direct current to the at least two phases of armature windings causes a rotational speed of said rotor to become smaller than a rated rotational speed of the induction motor at a time when the wind turbine is being rotated by wind, and

wherein said magnetic field control means applying the direct current to the at least two phases of armature windings when the wind turbine is being rotated by wind causes an induced current corresponding to the load torque to flow through the field conductor of the field, which in turn causes heat to be generated by the induction motor;

a heating medium circulation mechanism for circulating a heating medium that receives heat generated by said induction motor, wherein the heating medium and circulation thereof are configured to prevent heat damage to said field conductor and said armature winding, while at the same time storing at least a portion of the heat generated by the induction motor; and

a power generation portion for converting, into electricity, the heat of said heating medium generated by said induction motor.

2. The wind-powered thermal power generation system according to claim 1, further comprising

a heat insulating container that houses said induction motor, wherein

said heating medium circulation mechanism circulates said heating medium inside said heat insulating container.

3. A wind-powered thermal power generation system, comprising:

a wind turbine;

an induction motor including a field which has a field core and a field conductor arranged therearound, and an armature which has an armature core provided with a salient pole facing the field and an armature winding wound around the salient pole, and configured such that one of the field and the armature serves as a rotor coupled to a rotation shaft of said wind turbine, and the other serves as a stator;

magnetic field control means having a power supply for applying to said armature winding, an alternating current having a frequency that produces stalling torque greater than a rated torque of said induction motor when said rotor is rotating in conjunction with said rotation shaft as a result of said wind turbine concurrently being rotated by wind,

wherein said magnetic field control means applying the alternating current to the armature winding when the wind turbine is being rotated by wind causes slip that forcibly provides load torque to said rotor rotating in conjunction with said rotation shaft that is greater than the rated torque of said induction motor,

wherein said magnetic field control means applying the alternating current to armature winding causes a rotational speed of said rotor to become smaller than a rated rotational speed of the induction motor at a time when the wind turbine is being rotated by wind, and

wherein said magnetic field control means applying the alternating current to the armature winding when the wind turbine is being rotated by wind causes an induced current corresponding to the load torque to flow through the field conductor of the field, which in turn causes heat to be generated by the induction motor;

a heating medium circulation mechanism for circulating a heating medium that receives heat generated by said induction motor, wherein the heating medium and circulation thereof are configured to prevent heat damage to said field conductor and said armature winding, while at the same time storing at least a portion of the heat generated by the induction motor; and

a power generation portion for converting, into electricity, the heat of said heating medium generated by said induction motor.