Frequency converter debugging system and method and test platform
The technology of a debugging system and a debugging method, which is applied in the field of frequency converters, can solve the problems of difficult maintenance, inability to debug, and complicated functions of integrated frequency converters.
Pending Publication Date: 2022-07-29
SHANGHAI MITSUBISHI ELEVATOR CO LTD
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Problems solved by technology
However, the integrated frequency converter is difficult to maintain after leaving the factory, and the threshold is high; the function is complicated, and the quality control is difficult.
[0003] At present, there is no relevant patent specifically for the debugging platform of the inverter used in elevators. For the debugging platform and debugging methods of other types of inverters, more attention is paid to the overall operation of the inverter under normal working conditions and the fault location of the inverter is ignored. And protection functions, without step-by-step debugging, and debugging for a specific step, it is impossible to accurately judge the fault type and fault location of the inverter
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[0038] like figure 1 As shown, the present invention provides a frequency converter debugging system, including an external resistance unit for simulating load and regeneration resistance and for quickly releasing capacitor voltage after debugging; a switch combination unit for controlling the power supply of the debugging system; a signal input unit, It is used to simulate normal working and fault conditions; the signal reading unit is used to judge the status of the inverter; the voltage input and measurement unit is used to provide and detect the three-phase AC voltage and DC bus voltage for the inverter.
[0039] The external resistor unit includes at least one of the following resistors: analog load impedance, regeneration resistor and discharge resistor for quick discharge after debugging.
[0040] The switch combination unit includes at least one of the following switches: the main switch of the debugging system, the power-on switch of the inverter, the discharge switch...
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The invention discloses a frequency converter debugging system, which comprises an external resistor unit used for simulating a load and a regenerative resistor and quickly releasing capacitor voltage after debugging is finished; the switch combination unit is used for controlling a debugging system power supply; the signal input unit is used for simulating normal working and fault working conditions; the signal reading unit is used for judging the state of the frequency converter; and the voltage input and measurement unit is used for providing and detecting three-phase AC voltage and DC bus voltage for the frequency converter.
Description
technical field [0001] The invention relates to the field of frequency converters, in particular to a frequency converter debugging system and method. The invention also relates to a frequency converter test platform. Background technique [0002] As the core component of the normal operation of the elevator, the frequency converter is responsible for converting the three-phase 380V alternating current into alternating current with adjustable voltage amplitude and frequency, which is used to control the rotation of the traction machine. The normal, safe and reliable function of the inverter is directly related to the safety and reliability of the elevator system. Because the integrated inverter has the use of PIM module, the cost is greatly reduced; the main circuit is printed on the board, which is conducive to miniaturization and anti-interference design; the strong current part is concentrated in the inverter, which is conducive to the EMC design and structure of the con...
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IPC IPC(8): G01R31/00G01R1/04G01R1/02B66B5/00H05K7/20
CPCG01R31/00G01R1/0408G01R1/02B66B5/0037B66B5/0087H05K7/20136
Inventor 张犇董德靖邱中一
Owner SHANGHAI MITSUBISHI ELEVATOR CO LTD