Electrical loading apparatus

An electric charging and power grid technology, applied in the field of electric charging devices, can solve the problems of inconvenient direct application and high cost, and achieve the effects of reducing maintenance amount, use cost and maintenance cost.

Inactive Publication Date: 2007-04-18
BYD CO LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the problem that the DC loading device in the prior art requires an additional speed-up mechanism, which is inconvenient for direct application and high in cost, and provides a low-cost power supply that does not need an additional speed-up mechanism and is convenient for direct application. loading device

Method used

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Examples

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Embodiment

[0028] This example illustrates the electrical loading device provided by the present invention.

[0029] An AC variable frequency motor with a power of 132 kilowatts, model YVPCG280M2-67-A from Chongqing Dema Frequency Conversion Motor Research and Development Co., Ltd., and a dynamic torque sensor with a torque of 500 Nm of JZ-500 from Huxiang Measurement and Control Instrument Co., Ltd. , a model 6SE70 rectifier / regeneration unit with a power of 160 kW produced by Siemens, and a matching inverter unit with a power of 160 kW produced by Siemens and a power of 1.7 kW produced by Siemens Transformer, coupled with matching Siemens 535A reactor, Siemens 630A contactor, and Siemens 480A fuse, form the alternating current loading device.

[0030] Use this AC loading device to perform a performance test on a model 483 engine produced by Mitsubishi with a power of 90 kilowatts. Continuously tested for one month, the device can control the speed well within ±10rpm from the engine id...

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PUM

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Abstract

The invention relates to electrical loading unit. It includes loading control, electric machinery, and transducer. The electric machinery is alternating current frequency conversion one. The loading control includes electric network control unit, rectification/feedback unit, inversion unit, and outer control unit. The alternating current frequency conversion electric machinery central axis is connected with axial connecting machine on which the transducer is set. The electrical loading unit is based on the alternating current frequency conversion electric machinery which has higher rotate speed than direct current machine to avoid adding extra raising speed mechanism in high speed occasion and greatly reduce its use-cost. In addition, the alternating current frequency conversion electric machinery is no need to replace electrical brush. This can reduce maintaining quantity and cost for the electrical loading unit.

Description

technical field [0001] The invention relates to an electric loading device, in particular to an electric loading device for loading an engine through torque regulation. Background technique [0002] The electric loading device is mainly used to simulate various working conditions when the automobile engine is running, so as to test the performance of the automobile engine. Generally, the commonly used electric loading devices on the market include magnetic powder brakes, hysteresis dynamometers, eddy current dynamometers, and DC power dynamometers. [0003] Among the various electric loading devices currently used, the magnetic powder brake can only be used in low-speed applications due to the limitation of slip power; the hysteresis dynamometer is only suitable for low-torque and high-speed applications; in traditional The eddy current dynamometer is used as the electric loading device in the engine test benches. Although the initial investment of the equipment is relative...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M15/02
Inventor 张文龙光展王鹏房杨张明朗
Owner BYD CO LTD
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