Electric power generation system

Patent metadata

Field	Value
Publication number	US-9370050-B2
Application number	US-201013500098-A
Country	US
Kind code	B2
Filing date	Sep 13, 2010
Priority date	Oct 15, 2009
Publication date	Jun 14, 2016
Grant date	Jun 14, 2016

Abstract

An electric power generation system includes a wind turbine, a conductor rotating as the wind turbine rotates, a heat transfer medium vessel, a magnetic field generator, a heat accumulator, and an electric power generation unit. The magnetic field generator is operated to generate a magnetic field and therein the conductor is rotated and thus heated through induction, and the conductor's heat is transmitted to the water in the heat transfer medium vessel to generate steam which is in turn supplied to a steam turbine and thus drives an electric power generator to generate electric power.

First claim

The invention claimed is:

1. An electric power generation system comprising:
a wind turbine;
a conductor rotating as said wind turbine rotates;
a magnetic field generator generating a magnetic field traversing said conductor,

said magnetic field generator including first and second magnetic poles facing a surface of said conductor, said first and second magnetic poles being arranged along a rotational direction of said conductor, said first magnetic pole having a first magnetic polarity, and said second magnetic pole having a second magnetic polarity different from said first magnetic polarity;
a heat transfer medium receiving heat from said conductor rotated in said magnetic field and thus heated through induction;
a heat accumulator accumulating heat of said heat transfer medium;
a heat exchanger exchanging heat converting water into steam by using the accumulated heat;
an electric power generation unit generating electrical energy by using said steam supplied by said heat exchanger;
a heat transfer medium vessel having accommodated therein said heat transfer medium receiving heat from said conductor;
a first loop circulating said heat transfer medium between said vessel and said heat exchanger; and
a second loop circulating said water between said electric power generation unit and said heat exchanger.

2. The electric power generation system according to claim 1 , wherein said electric power generation system comprises:
a tower extending higher than a position of said electric power generation unit; and
a nacelle provided at an upper portion of said tower and provided with said wind turbine, said conductor and said magnetic field generator;
wherein said heat transfer medium vessel is disposed in said nacelle and
said first loop includes a transport pipe delivering said heat transfer medium from said heat transfer medium vessel to said heat accumulator.

3. The electric power generation system according to claim 1 , wherein said electric power generation unit has a turbine rotated by the steam supplied by said heat accumulator, and an electric power generator driven by said turbine.

4. The electric power generation system according to claim 1 , wherein said conductor has a portion provided with a magnetic substance.

5. The electric power generation system according to claim 1 , wherein said magnetic field generator has a coil generating a magnetic field.

6. The electric power generation system according to claim 5 , wherein said coil is a superconducting coil.

7. The electric power generation system according to claim 1 , wherein said electric power generation unit generates the electrical energy of at least 5 MW.

8. The electric power generation system according to claim 1 , wherein said first and second magnetic poles are arranged on opposite sides across said conductor.

9. The electric power generation system according to claim 1 , wherein at least three magnetic poles including said first and second magnetic poles are arranged along the rotational direction of said conductor such that said first magnetic polarity and said second magnetic polarity are alternately arranged along the rotational direction of said conductor.

10. The electric power generation system according to claim 5 , wherein the coil is wound around a direction crossing a rotation axis of said conductor.

11. The electric power generation system according to claim 1 , wherein said heat exchanger is included in said heat accumulator.

Assignees

• Okazaki Toru
• Sumitomo Electric Industries

Inventors

• Okazaki Toru

Classifications

• F05B2220/702

  the other apparatus being a steam turbine · CPC title

• H05B6/109 Primary

  using magnets rotating with respect to a susceptor · CPC title

• Y02B10/30

  Wind power · CPC title

• Y02P70/523

  Cross-Sectional Technologies · mapped topic

• Y02B10/70

  Hybrid systems, e.g. uninterruptible or back-up power supplies integrating renewable energies · CPC title