High-voltage inverter device and control method thereof
A technology of a high-voltage frequency converter and a control method, which is applied in the direction of output power conversion devices and electrical components, and can solve the problems of stopping the high-voltage frequency converter device and failing to realize continuous operation, so as to improve the reliability of use, avoid reoccurrence of failure, The effect of rapid resilience
Active Publication Date: 2013-05-01
LS INDAL SYST WUXI
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Problems solved by technology
[0016] For example, when one power unit 21 fails and the power unit 21 needs to be replaced, the system needs to be stopped in order to replace the power unit 21, so continuous operation cannot be realized. It may be necessary to stop the operation of the high-voltage inverter device
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[0047] Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings.
[0048] image 3 It is a circuit diagram of the high-voltage inverter device of the present invention.
[0049] refer to image 3 , the high-voltage frequency converter device of the present invention includes: a transformer 1, which inputs a high-voltage three-phase AC voltage to the primary side, and the secondary side has a plurality of taps adopting an extended delta connection mode; The voltage output by each tap to independently perform the function of a general single-phase inverter. The unit assembly 2' has a detour switch. When a fault occurs, the detour switch selectively connects both ends of the output part according to the fault content. short circuit, so as to remove the unit component on the circuit; the main controller 4 is used to control the actions of multiple unit components 2'. That is, the high-voltage inverter dev...
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The invention provides a high-voltage inverter device and a control method thereof. The high-voltage inverter device comprises a transformer, a plurality of unit assemblies, and a master controller, each phase of the high-voltage inverter device is provided with the unit assemblies which are respectively provided with a bypass switch, when malfunction occurs, two ends of an output part can be selectively enabled to be short-circuited through the bypass switches according to the malfunction content and the set action standards of different malfunctions. The control method of the high-voltage inverter device comprises the steps: detecting the malfunction content of the unit assemblies; cutting off the pulse width modulation signals outputting towards the malfunctioned unit assembly; according to the detected malfunction content of the unit assembly and the set action standards of different malfunctions, judging whether the malfunction is needed to be removed; and under the condition of judging that the malfunction needs to be removed, executing the bypassing on the bypass control of the unit assembly so as to remove the bypass control of the unit assembly from a circuit.
Description
technical field [0001] The present invention relates to a high-voltage frequency converter device and a control method thereof, in particular to a high-voltage frequency converter device with a by-pass function and a control method thereof. Background technique [0002] High-voltage inverters are widely used mainly as speed changers for high-voltage motors such as fans (Fans) and pumps (Pumps). [0003] figure 1 It is a circuit diagram of an existing high-voltage inverter device. [0004] Such as figure 1 As shown, the existing high-voltage frequency converter device is a multi-stage series frequency converter device, and the high-voltage frequency converter device includes: a transformer 1, which inputs high-voltage three-phase AC voltage to the primary side, and the secondary side has a plurality of branch points using the extended delta connection method. Joint (tap); multiple unit components 2, respectively receive the voltage output by multiple taps of the transforme...
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IPC IPC(8): H02M1/32
Inventor 张东济
Owner LS INDAL SYST WUXI