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Control of heavy machines

A heavy machine, machine technology, applied in the direction of motor generator control, AC motor control, motor speed or torque control, etc.

Active Publication Date: 2013-05-15
动感公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The present invention solves the above-mentioned problems by providing a system for stepless adjustment of speed and power on heavy machines, which has a compact and simple design, which does not create electrical disturbances and is more cost-effective than existing systems, few complex components

Method used

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  • Control of heavy machines
  • Control of heavy machines
  • Control of heavy machines

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Embodiment Construction

[0040] figure 1 A schematic diagram showing a preferred embodiment of the system according to the invention. like figure 1As shown, the system is a three-phase AC system powered by an external power source. The frequency of the external power supply is typically 50 Hz, but other frequencies such as 60 Hz may also be used. A pure sinusoidal waveform current is drawn directly from the grid and delivered to the system, and since the system does not generate significant electrical disturbances, there is no need for example rectification or filtering. Several electric machines can operate as motors and generators, depending only on the direction of the force acting on the mechanical shaft. This is Figure 1 to Figure 8 The M1 / G marked in indicates the cause of the motor or generator.

[0041] The system comprises a three-phase (3~) two-speed electric motor M1, M2, preferably an asynchronous motor, mechanically connected to a gear G and which will drive a processing machine P. ...

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Abstract

The present invention relates to a system for controlling rotational speed on a rotating process machine, which for example is a turbine or a propeller, where the rotating process machine is connected to at least one motor and arranged to rotate with a given rotational speed given by the motor, the motor is connected to a control system and the rotational speed of the motor is arranged to be controlled by a control system. The rotating process machine comprises a load control arranged to be adaptable, the control system is connected to the rotating process machine. With the invention, one achieves soft transitions between several selectable rotational speeds and lower energy consumption by step by step adjusting the size and the rotational speed of the motor to varying energy requirement.

Description

technical field [0001] The present invention relates to a system for controlling speed and power on heavy machines, for example machines with power greater than 100 kW. Background technique [0002] Today, in most fields, it is recognized that the environment and climate are important aspects. This is particularly important in industry and transport, followed by considerations of reducing electricity, fuel consumption and reducing environmentally harmful exhaust emissions. The present invention helps large-scale machines to efficiently use energy by using these large-scale machine components (components) and composition (composition), and makes the machine run in a high-energy-efficiency mode, so that the start, stop and operation of the machine can be performed by using energy efficiently, which Again reducing waste discharges that are harmful to the environment. [0003] Several existing systems for controlling the speed and power of heavy machines such as those used in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P5/747H02P27/02
CPCH02P1/54H02P27/02H02P5/747H02P1/166
Inventor H·斯里蒂沃
Owner 动感公司
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