CN202066921U

CN202066921U - Testing equipment for frequency converter

Info

Publication number: CN202066921U
Application number: CN2011200400078U
Authority: CN
Inventors: 黄景春
Original assignee: Shanghai Shenfei Energy Technology Co Ltd
Current assignee: Shanghai Shenfei Energy Technology Co Ltd
Priority date: 2011-02-16
Filing date: 2011-02-16
Publication date: 2011-12-07
Anticipated expiration: 2021-02-16

Abstract

The utility model relates to testing equipment for a frequency converter, which comprises a tested frequency converter, a PC (personal computer) module, a PLC (programmable logic controller) module, a power supply control module, a DI (data input) current generator module, an SPWM (silent pulse width modulation) waveform correction module and a detection module output and record printing module; the testing equipment has the beneficial effects that the testing equipment can automatically set the rated current according to the power of the frequency converter, protects the current, automatically records the testing process, judges whether a product is qualified, reduces the effect of human factors, improves the reliability of the product quality and is safe for equipment and debugging personnel; in addition, the testing equipment thoroughly solves the problems that the high-power frequency converter testing board has high power consumption and high noise and severely wastes energy sources; and the testing equipment leads the debugging of the frequency converter to be safe and convenient and reliable, and has high testing accuracy.

Description

The frequency converter testing apparatus

Technical field

The utility model relates to a kind of testing apparatus, relates in particular to a kind of frequency converter testing apparatus.

Background technology

As seen from Figure 1: the frequency converter testing apparatus comprises in the prior art: big-power transducer test board, high-power three-phase AC asynchronous motor drive the high power varying load and finish debugging and test, test new production or the frequency converter that keeped in repair.The frequent start-stop of debugging test process need is transferred on a large scale and is carried, and the method for testing of high-voltage large current makes the consumption of debugging test process slattern a large amount of electric energy.

There are a lot of defectives in such commissioning device: at first powerful mechanical electric apparatus equipment electric wire connects complicated; Accurately debugging test parameter difficulty is difficult to improve the frequency converter adjustment accuracy; High-voltage large current has certain influence to equipment and commissioning staff's safety; Maximum problem is: testing apparatus, debugged frequency converter all are the 380V inputs in the debugging test process; The big electric current of 380V is exported direct drive motor and is driven variable load, and the frequent start-stop of debugging test process is transferred on a large scale and carried, and not only power consumption is big, and energy dissipation is serious, and noise is big, and causes the 380V voltage ripple of power network; Influence the normal use of other consumer; Cause the debugging of big-power transducer very inconvenient.

Summary of the invention

The utility model technical issues that need to address have provided a kind of frequency converter testing apparatus, are intended to solve the above problems.

In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:

The utility model comprises: tested frequency converter; Also comprise: export and the record print module with PC module, PLC module, energy supply control module, DI current feedback circuit module, SPWM waveform correction module, detection module that tested frequency converter links to each other respectively.

Compared with prior art, the beneficial effects of the utility model are: can be according to the power automatic setting rated current of frequency converter, protective current, automatically write down test process and judge that whether qualified product is, reduced artificial factor, improved the confidence level of product quality, safer to equipment and commissioning staff; It is big thoroughly to have solved big-power transducer test board power consumption, and energy dissipation is serious, the problem that noise is big; Make the debugging of frequency converter safer, convenient, reliable, measuring accuracy is higher.

Description of drawings

Fig. 1 is tester module figure in the prior art;

Fig. 2 is the utility model module map.

Embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:

As seen from Figure 2: the utility model comprises: tested frequency converter; Also comprise: export and the record print module with PC module, PLC module, energy supply control module, DI current feedback circuit module, SPWM waveform correction module, detection module that tested frequency converter links to each other respectively.

The PLC module that adopts in the utility model, energy supply control module, DI current feedback circuit module, the output of SPWM waveform correction module, record print module and detection module all are the prior art module.

The utility model is mainly by PC module (automatic program control), PLC module, ZY101 energy supply control module, DI current feedback circuit module, SPWM waveform correction module, output and detection module; Compositions such as record print module and connecting circuit plate thereof.Major loop is powered with 5 to 36V the big electric current of safe voltage, and the overall process of automatic program control test and debugging is energy-conservation more than 90%, has improved the frequency converter adjustment accuracy, makes the convenient safety of debugging operations, has thoroughly eliminated dry sound pollution.

The utility model PC and supporting control program thereof have solved automatic control test process; Touch-screen, PLC module have solved the people, machine exchanges the interface and process is carried out; The ZY101 power control system has solved the generation of testing required various power supplys and has connected automatically; Connect DI current feedback circuit, SPWM waveform corrector and solved 5 to 36V required safe voltage big electric currents power supply of major loop in the test; Output, detection module, record print module have solved detection, comparison, the writing function of test process.Cancelled the serious high power load that consumes energy, energy-conservation more than 90%, really accomplished convenience, energy-conservation, safety, environmental protection.

Claims

1. a frequency converter testing apparatus comprises: tested frequency converter; It is characterized in that also comprising: export and the record print module with PC module, PLC module, energy supply control module, DI current feedback circuit module, SPWM waveform correction module, detection module that tested frequency converter links to each other respectively.