Apparatus for temporarily taking the electrical current of energy transmission or distribution equipment as needed
A technology of energy distribution and energy transmission, applied in the field of current devices, can solve problems such as limited service life
Active Publication Date: 2021-10-26
GE ENERGY POWER CONVERSION TECH
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- Description
- Claims
- Application Information
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Problems solved by technology
Typically, an IGBT operates at an operating point with a gate-emitter voltage VGE = 15V, where, according to the manufacturer's specifications, the gate-emitter voltage for continuous operation is typically not allowed to be higher than 20V because Otherwise the lifetime of the thin insulating oxide layer under the gate is limited
Method used
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Embodiment Construction
[0058] figure 1 A hybrid direct current (DC) power switch 1 is shown, forming a first preferred embodiment of a device 2 according to the invention for temporarily assuming or commutating current as required. The hybrid DC power switch 1 can be used as a so-called "DC breaker (DC interrupter)", for example in high-voltage direct current transmission (HGÜ) systems, in order to quickly and safely switch off in the event of a short circuit in the downstream DC grid section Isolate the faulty part so that other parts of the system continue to function. Existing mechanical DC disconnect switches cannot completely interrupt the DC current within milliseconds, as is required in HVDC applications. Furthermore, mechanical DC disconnect switches require complex measures to avoid or eliminate arcing when opening the disconnect switch. Semiconductor-based DC current interrupters switch extremely fast and arc-free. The hybrid DC power switch 1 overcomes said disadvantages and is capable...
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A device for diverting an electric current from a first line branch to a second further line branch as required is realized, which device has a plurality of power semiconductor switching elements arranged in series and / or parallel to each other in the second line branch and A driving control unit that controls multiple power semiconductor switching elements. The control unit is configured to apply an increased control voltage, which is higher than the maximum permissible control voltage specified for continuous operation, to a plurality of power semiconductor switching elements in order to conductively connect or maintain a plurality of power semiconductor switching elements. Power semiconductor switching elements, and causing an increased flow current through them, the current intensity of which corresponds to at least twice the rated operating current. The control unit is furthermore configured to switch off the plurality of power semiconductor switching elements by switching off the control voltage after a respectively set short switch-on period while the plurality of power semiconductor switching elements conduct an increased flow current. Thus, the device can be designed for higher power in operation, or the semiconductor area and structural size of the device can be reduced at a given operating power.
Description
technical field [0001] The invention relates to a device for temporarily taking over the current flow of an energy transmission device or energy distribution device as required, and in particular to a device having a plurality of power semiconductor switching elements which are connected in series with each other and and / or in parallel in the following line branch into which the current should be commutated as required. Background technique [0002] Power semiconductor devices, such as IGBTs (Insulated Gate Bipolar Transistors), BIGTs (Dual Mode Insulated Gate Transistors), MOSFETs (Metal Oxide Semiconductor Field Effect Transistors) and similar, are also used to rectify and Inversion. For this purpose, suitable converters usually have a plurality of power semiconductor switching elements. Converters with different topologies for different power levels are known for different applications, such as for coupling a power grid to a variable-speed drive and for exchanging energ...
Claims
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Patent Timeline
Login to View More IPC IPC(8): H02M1/34
CPCH02M1/34H02M1/088H02M1/32H03K17/06H03K17/127H03K2017/066H02H7/1213Y02E10/76H02M5/2932H02J3/36H02M1/08H02M5/293
Inventor R·雅各布M·格斯克K·延斯J·卢茨
Owner GE ENERGY POWER CONVERSION TECH