Rotating Electric Machines and Methods of Avoiding Resonance
A technology for rotating motors and electric wires, applied in the field of resonance avoidance, which can solve problems such as detachment of connection parts, heat generation, terminal box connection operation, and difficulty in inspection operations, etc.
Active Publication Date: 2018-06-19
TOSHIBA MITSUBISHI-ELECTRIC IND SYST CORP
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- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] If the terminal box is small, the space inside the terminal box will be narrow, making it difficult to perform connection and inspection operations in the terminal box.
As a result, the connection state may become incomplete. In this case, fire may be caused due to heat generation, or a phase-to-phase short circuit may occur due to shifting of the wire position due to vibration, or a secondary connection may occur. partial detachment
Method used
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Embodiment Construction
[0025] Hereinafter, a rotating electrical machine according to an embodiment of the present invention will be described with reference to the drawings.
[0026] figure 1 It is an overall front view of the rotating electrical machine including the cross section of the main body according to the embodiment. The rotating electrical machine 100 includes a main body portion 10 , a terminal box 20 , a communication pipe 30 , and a support mechanism 40 .
[0027] The main body portion 10 includes a rotor 11 , a stator 12 and a frame 15 . The rotor 11 includes a rotating shaft 11a and a rotor core 11b. The stator 12 includes a cylindrical stator core 12 a disposed radially outward of the rotating shaft 11 and a stator coil (not shown). The frame 15 accommodates the rotor core 11 and the stator 12 . The main body 10 includes the legs 16 supporting its own weight. The legs 16 are mounted on the base 5 , and the dead weight is conducted to the base 5 via the legs 16 .
[0028] The ...
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A rotating electrical motor and a resonance avoidance method can avoid the resonance between a main body portion and a terminal box in the rotating electrical motor. The rotating electrical motor (100) includes the main body portion (10), the terminal box (20), a support mechanism (40) and a contact pipeline (30). The main body portion includes a rotor (11) with a rotating shaft (11a) and a rotor core (11b), a stator (12) with a stator core (12a) and a stator coil, and a framework (15) which houses the rotor core (11b) and the stator (12). The terminal box and the main body portion are arranged next to each other. A connection portion for connecting a main body side wires from the main body portion and an outside wires from an exterior is arranged in the terminal box. The support mechanism and the main body portion independently support the terminal box. The rigidity can be changed in order to prevent the resonance between the terminal box and the main body portion. The contact pipeline can connect the framework and the terminal box, and houses the main body side wires.
Description
technical field [0001] The present invention relates to a rotating electrical machine configured to avoid resonance between a main body portion and a terminal box, and a method for avoiding resonance. Background technique [0002] Generally, in a rotating electrical machine, the connection between the main body side electric wire of the rotating electrical machine and the external side electric wire, that is, the power supply when the rotating electrical machine is a motor, and the electric wire when the rotating electrical machine is a generator, are accommodated in a terminal box. Connection wires on the load side or power system side. By installing the terminal box, an attempt is made to prevent electric shock due to human contact, phase-to-phase short-circuit due to the adhesion of rainwater, foreign matter, and the like. The terminal box is usually attached to the side part or the upper part of the frame of the rotating electrical machine, and is formed integrally with...
Claims
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IPC IPC(8): H02K5/22H02K5/24
CPCH02K5/225H02K5/24
Inventor 川野洋平
Owner TOSHIBA MITSUBISHI-ELECTRIC IND SYST CORP