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Creeping discharge element driving device and creeping discharge element driving method

A technology of creeping discharge and driving device, which is applied to electrical components, high-efficiency power electronic conversion, and output power conversion devices, etc., can solve problems such as increased load capacity, circuit overload state, and resonance period deviating from a certain range.

Active Publication Date: 2021-02-02
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, since the wind power generator is installed outdoors, when the creeping discharge element becomes wet due to the influence of rainfall or the like during startup or discharge, the load capacity of the creeping discharge element increases, and the resonance period deviates from a certain range. It is possible for the circuit to fall into an overload condition, and it is necessary to deal with such environmental conditions
[0007] Therefore, it is conceivable to use a rain detection device or the like to detect the environmental state of the creeping discharge element, and to perform control to stop the power supply operation to the creeping discharge element when rain is detected. However, it is necessary to separately install equipment such as a rain detection device, cost

Method used

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  • Creeping discharge element driving device and creeping discharge element driving method
  • Creeping discharge element driving device and creeping discharge element driving method
  • Creeping discharge element driving device and creeping discharge element driving method

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Experimental program
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Effect test

no. 1 Embodiment approach

[0037] Below, refer to Figure 1 to Figure 13 The creeping discharge element driving system of the first embodiment will be described. figure 1 It is a diagram showing the electrical configuration (circuit configuration) of the creeping discharge element drive system according to the first embodiment.

[0038] like figure 1 As shown, the creeping discharge element driving system 70 has a power supply device 2 for creeping discharge, a rectifier circuit 1, a step-down circuit 6, a series resonant circuit 11, a resonant reactor 13, and a primary side winding 15 and a secondary side winding 16. The high-frequency high-voltage transformer 14, the creeping discharge element 17, the zero-cross point detection circuit 40, the micro-calculation unit 19 (hereinafter referred to as "MCU 19"), and the memory 20 and the like.

[0039] The power supply device 2 outputs 200V (Vac) of three-phase alternating current. The rectifier circuit 1 has a three-phase rectifier 3 connected to a pow...

no. 2 Embodiment approach

[0117] Figure 14 to Figure 17 The second embodiment is shown, and the same reference numerals are given to the same components as those of the first embodiment to omit descriptions thereof, and different parts will be described.

[0118] like Figure 14 As shown, the creeping discharge element drive system 71 of the second embodiment has the following circuit configuration: one current detection element 18 is connected and arranged at one end of the resonant reactor 13 and the primary side winding 15 of the high-frequency high-voltage transformer 14, and the current The detection element 18 is connected to two zero-cross point detection circuits 40c, 40d.

[0119] Next, refer to figure 2 , Figure 14 ~ Figure 17 The configuration and operation of the second embodiment will be described. In addition, the control content performed by MCU19 is the same as Figure 7 The control content shown is the same.

[0120] In the second embodiment, with figure 2 In the example of th...

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Abstract

The invention provides a driving device for a creeping discharge element and a driving method for a creeping discharge element. A creeping discharge device driving device according to an embodiment includes a current detection unit (18a, 18b), a zero-cross detection unit (40a-40d), a storage unit (20), and a control unit (19). The current detection unit (18a, 18b) detects the alternating current flowing in the switching element (12c, 12d). A zero-cross point detection unit (40a to 40d) detects a zero-cross point of an AC current. A storage unit (20) stores a first threshold value (20a) of a resonance cycle for determining abnormality of a creeping discharge element (17) during test operation. The control unit (19) applies a test voltage lower than the voltage applied at the start of normal operation to the creeping discharge element (17) during the test run, and obtains the resonance period of the AC current from the zero-crossing point of the detected AC current. When the resulting resonance cycle exceeds the first threshold (20a), driving of the switching elements (12a-12d) is suppressed or stopped.

Description

technical field [0001] Embodiments of the present invention relate to a driving device for a creeping discharge element and a method for driving a creeping discharge element. Background technique [0002] In recent years, creeping discharge elements have been installed on blades of windmills of wind power generators, etc., and it is possible to improve the turning force (lift force) of the blades. The power supply circuit for driving the creeping discharge element is equipped with a switching circuit that converts DC voltage into AC voltage by switching, a resonant reactor, and a high-voltage transformer for AC voltage step-up. The resonant reactor and The resonance phenomenon generated by the capacitive component of the creeping discharge element applies a high-frequency high voltage to the creeping discharge element to generate streamers, thereby imparting lift to the blade. [0003] Since the wind power generator is installed in the field, the electrical performance of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M7/06H02M7/5387H02M1/32H05H1/24H02M7/48H02M3/158
CPCH02M7/48H02M1/32H02M7/53871Y02B70/10H02M1/0058H02M1/007H02M3/158H02M7/06
Inventor 田中元史大迫俊树村山裕纪筱原尚人安井祐之
Owner KK TOSHIBA