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Integrated hydraulically-driven permanent magnet synchronous generator

A permanent magnet synchronous and integrated technology, applied in variable displacement engines, reciprocating piston engines, machines/engines, etc., can solve problems such as external leakage, large weight and space occupation, and unsatisfactory control performance

Inactive Publication Date: 2010-01-27
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the power generation device is generally composed of a separate hydraulic motor, a coupling and a coaxial connection of the generator, but the weight and space occupied by this installation combination are large, and it is not suitable for mobile equipment such as construction machinery
Moreover, hydraulic motors and generators are mechanically driven through couplings, which reduces the overall mechanical efficiency of the device.
In order to control the flow, the displacement of the hydraulic motor or the speed of the generator can be adjusted, but the control performance of the displacement control or the open-loop speed control is not very ideal
In addition, since the hydraulic motor has an outstretched shaft, there may be external leakage

Method used

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Embodiment Construction

[0017] Figure 1 ~ Figure 2 In combination, an integrated hydraulically driven permanent magnet synchronous generator is provided, including a base 22 and a motor housing 25 arranged on the base 22, and the left end cover 1 and the motor housing 25 are respectively fixed on both sides. Right end cover 17; cylinder body 23, rotating shaft 24, swash plate 31, oil distribution plate 20, etc. are respectively provided in motor housing 25. A junction box 5 is provided on the motor housing 25 , and an oil drain port 14 is also provided on the motor housing 25 .

[0018] The left end cover 1 is fixedly connected with the motor housing 25 through screws 30, and a sealing ring 34 is arranged between the left end cover 1 and the motor housing 25; the right end cover 17 is fixedly connected with the motor housing 25 through screws 33, and the right end cover A sealing ring 18 is arranged between 17 and the motor housing 25 . An oil inlet passage and an oil outlet passage are respective...

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Abstract

The invention discloses an integrated hydraulically-driven permanent magnet synchronous generator which comprises a motor shell (25), a rotating shaft (24), a cylinder body (23), a permanent magnet (26) and a motor stator (27), wherein the right side of the cylinder body (23) is tightly attached to an oil distribution disk (20), and the left side of the cylinder body (23) is provided with an inclined disk (31); a plunger hole (32) is arranged in the cylinder body (23), a plunger (8) positioned in the plunger hole (32) is rotatably connected with a slide shoe (6), and the slide shoe (6) is tightly attached to the inclined disk (31); an oil inlet (15a) on an oil-pass joint block (16), an oil inlet passage in a right end cover (17) and an oil inlet window on the oil distribution disk (20) are communicated in sequence; and an oil outlet (15b) on the oil-pass joint block (16), an oil outlet passage in the right end cover (17) and an oil outlet window on the oil distribution disk (20) are communicated in sequence. The permanent magnet synchronous generator is used for converting hydraulic energy into electric energy.

Description

technical field [0001] The invention relates to hydraulic technology and a permanent magnet synchronous generator, in particular to an integrated conversion device from hydraulic energy to electric energy. Background technique [0002] Using a hydraulic motor to drive a generator to realize the conversion of hydraulic energy to electrical energy can be used in many occasions, such as potential energy recovery of hybrid construction machinery, field power supply, wind power generation, etc. Taking potential energy recovery of hybrid construction machinery as an example, hydraulic motors and generators are installed in the oil return circuit of the system. When the boom is lowered, the return oil back pressure formed by potential energy drives the generator to rotate through the hydraulic motor, and then uses capacitors or batteries to The energy storage device stores the electrical energy generated by the generator, thereby converting the hydraulic energy into electrical ener...

Claims

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Application Information

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IPC IPC(8): H02K7/18H02K11/00F03C1/00H02K5/04H02K11/21
Inventor 王庆丰王滔林添良
Owner ZHEJIANG UNIV
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