Annular capacitor with power conversion components
A technology of capacitors and film capacitors, which is applied in the direction of tubular capacitors, wire-wound capacitors, fixed capacitor terminals, etc., can solve the problem of voltage rise at the switch, and achieve the effects of reducing voltage overshoot, low ESR, and low effective series inductance
Inactive Publication Date: 2013-10-30
SBE
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[0007] 3) The lower inductance of this capacitor to the switch reduces the voltage rise at the switch during switch off which is a major concern for converter / converter designers
In this area there will be weak points and eventual failures
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[0034] exist figure 1 A metallized film polymer ring capacitor with a single power conversion component is shown in . The annular capacitor body 101 has a variable center hole radius, allowing the power conversion component 102 to be tailored to specific specifications, leaving the necessary space for the component's upper terminal 104 , lower terminal 103 and output terminal 105 . exist figure 1 In , the terminals are positioned for the shortest possible path using typical commercially available power conversion components. The outer diameter and thickness of the ring capacitor can then be selected to achieve the desired capacitance for the power conversion application. exist Figure 1BThe thickness of the ring capacitor is indicated in (address). The depth of the ring capacitor 101 is made to match the height of the power conversion component 102 so that the terminals 103 and 104 can maintain the shortest distance for connection to the capacitor and thus the lowest con...
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Formation of an assembly unit consisting of toroidal capacitors (closed loop shaped wound metallized dielectric capacitors) with other power conversion components will allow higher density converter designs (power per unit volume) where the other The power conversion components are arranged and attached in a manner only allowed by the ring design. The resulting short connection path between the capacitor element and the switching semiconductor also provides a very low inductance path which minimizes voltage spikes on the switching semiconductor as a result of di / dt being turned off. Capacitors act as short-term current sources and sinks for switching semiconductors. With the described configuration, the RMS current seen by the capacitor can be made more volumetrically uniform, enabling a more uniform temperature rise. A single capacitor configured as described also alleviates the bus resonance problem often seen in the prior art when multiple discrete capacitors are connected in parallel.
Description
[0001] Related Application Cross Reference [0002] This application claims priority to U.S. Provisional Patent Application Nos. 60984561, 60984546, and 60984530, filed November 1, 2007, each entitled "Annual capacitor with semiconductors around the perimeter to perform power conversion", "Annual capacitor with semiconductor die or modules inside the hole for power conversion", and "Annual capacitor with power conversion semiconductor electronics contained inside the center hole", the subject matter of which are incorporated herein by reference. Here, the present invention is based on a recent patent 7,289,311 "Power ring pulse capacitor" issued on October 30, 2007 by the same inventor. technical field [0003] The present invention relates to ring factor capacitors for use as DC link capacitors in power conversion electronics. In particular, the invention relates to the selection of configurations for placing power switching devices around or within said capacitors which, fo...
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IPC IPC(8): H01G4/32
CPCH01G4/14H01G4/28H01G4/32H02M7/003Y10T29/53H05K7/14329H01G4/228
Inventor特里·霍斯金
OwnerSBE