6.6 KiB
| title | chunk | source | category | tags | date_saved | instance |
|---|---|---|---|---|---|---|
| Glossary of power electronics | 4/6 | https://en.wikipedia.org/wiki/Glossary_of_power_electronics | reference | science, encyclopedia | 2026-05-05T07:51:12.696950+00:00 | kb-cron |
indirect (power) conversion Electronic conversion with one or more DC or AC link(s).
indirect current link AC converter An AC converter with a current stiff DC link .
indirect DC converter A DC converter with an AC link.
indirect inverter An inverter with a DC link.
indirect rectifier A rectifier with a DC or AC link.
indirect voltage link AC converter An AC converter with a voltage stiff DC link.
inductive direct voltage regulation The direct voltage regulation due to the commutation inductance(s).
influence quantity In the field of power electronics any quantity generally external to a power supply which may affect its performance.
inherent delay angle The current delay angle occurring, even without phase control, caused by multiple overlap.
inherent direct voltage regulation The direct voltage regulation excluding the effect of the AC system impedance.
intermittent flow (of direct current) A flow of direct current which is periodically interrupted.
internal discharge device A device incorporated in the capacitor connecting the terminals of the unit, capable of reducing the residual voltage effectively to zero after the capacitor has been disconnected from the supply.
internal (element) fuse A device incorporated in the capacitor which disconnects an element or a group of elements in the event of breakdown.
insulation voltage (Ui) The RMS rated value of the insulation voltage of capacitive elements and terminals to case or earth. If not specified, the RMS value of the insulating voltage is equivalent to the rated voltage divided by a square root of 2.
interphase transformer An electromagnetic device enabling the operation in parallel of two or more phase displaced commutating groups through inductive coupling between the windings placed, on the same core.
inversion factor For inversion, the ratio of the fundamental output power to the DC power.
ideal no-load direct voltage The theoretical no-load direct voltage of an AC/DC converter assuming no reduction by phase control, no threshold voltages of electronic valve devices, and no voltage rise at small loads.
idle interval (of a valve arm) That part of an elementary period in which the valve arm does not conduct.
ionic valve device filled valve device An electronic valve device in which the effects of the ionization of a gas play an important role.
(electronic) (power) inversion Electronic conversion from DC to AC
inverter AC/DC converter for inversion.
== J ==
jumping characteristic The property of an equipment to jump from one characteristic to another, e.g. by changing the predetermined value of a stabilizing device.
== L ==
latching valve device A controllable valve device which latches when it is turned on, that means it remains in the on state when the trigger signal has ended.
line commutation An external commutation where the commutating voltage is supplied by the line.
load commutation An external commutation where the commutating voltage is taken from a load other than the line.
lowest operating temperature (θmin) (capacitor) The lowest temperature at which the capacitormay be energized.
== M ==
machine commutation External commutation where the commutating voltage is supplied by a rotating machine.maximum current (Imax) (capacitor) The maximum RMS current for continuous operation.maximum loss power (Pmax) (capacitor) The maximum loss power with which the capacitor may be loaded at the maximum case temperature. maximum operating temperature (θmax) (capacitor) The highest temperature of the case at which capacitor may be operated. maximum peak current (i) (capacitor) The maximum current amplitude which occurs instantaneously during continuous operation.maximum surge current (is) (capacitor) The admissible peak current induced by a switching or any other disturbance of the system which is allowed for a limited number of times.metal-foil capacitor (non self-healing) A capacitor in which the electrodes usually consist of metal foils separated by a dielectric, in the event of breakdown of the dielectric, the capacitor does not restore itself.model capacitor A smaller unit which simulates a complete unit or element in an electrical test, without reducing the severity of the electrical, thermal or mechanical conditions.
multi-connected converter A converter consisting of two or more converter units parallel connected or series connected or both, each of which is an operative converter of its own.
multiple connection (of commutating groups) A connection in which two or more identical commutating groups which do not commutate simultaneously are connected in such a way that their direct currents add.
multicycle control The process of varying the ratio of the number of cycles which include current conduction to the number of cycles in which no current conduction occurs.
multicycle control factor The ratio between the number of conducting cycles and the sum of conducting and non-conducting cycles in the case of multicycle control.
== N ==
natural characteristic (of a line commutated converter) A characteristic determined only by the basic parts of the equipment, e.g. transformer and valve device assembly.
non-conducting direction (of an electronic valve device or of a valve arm) The reverse of the conducting direction.
non-controllable connection A uniform connection with all principal arms non-controllable.
non-controllable valve device rectifier diode A reverse blocking valve device the current path of which conducts in its conducting direction without any control signal being applied.
non-recurrent surge voltage (Us) (capacitor) A peak voltage induced by a switching or any other disturbance of the system which is allowed for a limited number of times and for durations shorter than the basic period.
non-reverse blocking valve device A controllable valve device which is not capable of blocking any voltage of more than several volts in its non-conducting direction.
non-uniform connection A connection with both controllable and non-controllable principal arms.
== O ==
off state forward blocking state The non-conducting state of a controllable valve device or an arm consisting of such devices when load current in the conducting direction is not allowed to flow due to the absence of a turn-on signal.
on state conducting state The condition when conducting current flows through an electronic valve device or an arm.
one-quadrant converter An AC/DC or DC converter with one possible direction of DC power flow.