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Ac motor and controller

A three-phase AC, motor technology, used in the manufacture of motor generators, electric components, electrical components, etc., can solve problems such as connection difficulties, save materials, and improve EMV characteristics.

Inactive Publication Date: 2015-07-01
JUNGHEINRICH AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Stator windings in the low voltage range often have very large cross-sections, which makes mechanically stress-free connections at the corresponding connecting elements difficult

Method used

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  • Ac motor and controller

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Embodiment Construction

[0016] exist figure 1 A three-phase AC motor 10 with a housing 12 is shown in FIG. The stator and rotor of a three-phase AC motor such as a short-circuit rotor motor are not shown. However, the motor shaft 14 can be seen, which is connected to a suitable unit to be driven. Such a unit can be, for example, a pump or a transmission. These parts can be flanged directly to the open end side of the electric motor 10 , for which purpose the housing 12 has suitable radial projections 16 with holes. This is however not important for the following considerations.

[0017] The motor shaft extends through a circular plate or disc 18, which constitutes the motor fender. The motor shield 18 is formed from a suitable highly heat-resistant, electrically insulating plastic material. The motor fender 18 has an elongated slot 20 near the edge through which three electrical cables 22 extend. These are the phase connections for the stator winding, not shown. as in figure 1 In addition, it...

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Abstract

The motor i.e. three-phase motor (10) has a printed circuit board attached at an outer side of a motor plate (18). Isolated phase connections (22) are guided into a gap between the motor plate and the printed circuit board by an opening (20) of the motor plate. The isolated phase connections are connected electrically with the printed circuit board by connection contacts. Fixing unit is provided for attachment of the printed circuit board at the motor plate. The motor and the control device are integrated in a common housing (12).

Description

technical field [0001] The invention relates to a three-phase AC motor according to claim 1 and to a control device fed with direct current. Background technique [0002] Three-phase AC motors are mostly used as drives for assemblies of ground vehicles, such as traction drives, servo drives, pump drives and the like. The energy source is usually a battery. It is therefore necessary to provide a converter which generates the three-phase current for the electric motor from the direct current. For this reason, the electric motor is equipped with a control unit, which contains a converter and at the same time contains a control element for controlling the converter, so that the three-phase AC motor can control its speed. [0003] It is known to arrange the control unit in a separate module. The power connections are located in so-called motor terminal blocks and must be connected to the electrical control unit via relatively long cable connections. [0004] However, it is al...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K11/00H02K15/00
CPCH02K3/50H02K5/225H02K11/0073H02K11/33
Inventor B·诺曼森A·罗格C·韦伯
Owner JUNGHEINRICH AG