Switching control systems
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United States of America Patent
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Oct 10, 2017
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Dec 6, 2012
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Dec 23, 2011
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Abstract
We describe a system for controlling very large numbers of power semiconductor switching devices (132) to switch in synchronization. The devices are high power devices, for example carrying hundreds of amps and/or voltages of the order of kilovolts. In outline the system comprises a coordinating control system (110, 120), which communicates with a plurality of switching device controllers (130) to control the devices into a plurality of states including a fully-off state, a saturated-on state, and at least one intermediate state between the fully-off and saturated-on states, synchronizing the devices in the at least one intermediate state during switching.
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