JonyC/ScienceGlossary · Datasets at Hugging Face

term stringlengths 1 63 ⌀	category stringclasses 15 values	label int64 0 1	definition stringlengths 5 3.18k ⌀
ui	Physics	1	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	Physics	1	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	Physics	1	For inversion, the ratio of the fundamental output power to the DC power.
ideal no-load direct voltage	Physics	1	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	Physics	1	That part of an elementary period in which the valve arm does not conduct.
ionic valve device	Physics	1	An electronic valve device in which the effects of the ionization of a gas play an important role.
filled valve device	Physics	1	An electronic valve device in which the effects of the ionization of a gas play an important role.
(power) inversion	Physics	1	Electronic conversion from DC to AC
inverter	Physics	1	AC/DC converter for inversion.
jumping characteristic	Physics	1	The property of an equipment to jump from one characteristic to another, e.g. by changing the predetermined value of a stabilizing device.
latching valve device	Physics	1	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	Physics	1	An external commutation where the commutating voltage is supplied by the line.
load commutation	Physics	1	An external commutation where the commutating voltage is taken from a load other than the line.
lowest operating temperature	Physics	1	The lowest temperature at which the capacitormay be energized.
θmin	Physics	1	The lowest temperature at which the capacitormay be energized.
machine commutation	Physics	1	External commutation where the commutating voltage is supplied by a rotating machine.
maximum current	Physics	1	The maximum RMS current for continuous operation.
imax	Physics	1	The maximum RMS current for continuous operation.
maximum loss power	Physics	1	The maximum loss power with which the capacitor may be loaded at the maximum case temperature.
pmax	Physics	1	The maximum loss power with which the capacitor may be loaded at the maximum case temperature.
maximum operating temperature	Physics	1	The highest temperature of the case at which capacitor may be operated.
θmax	Physics	1	The highest temperature of the case at which capacitor may be operated.
maximum peak current	Physics	1	The maximum current amplitude which occurs instantaneously during continuous operation.
i	Physics	1	The maximum current amplitude which occurs instantaneously during continuous operation.
maximum surge current	Physics	1	The admissible peak current induced by a switching or any other disturbance of the system which is allowed for a limited number of times.
is	Physics	1	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	Physics	1	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.
non self-healing	Physics	1	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	Physics	1	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	Physics	1	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	Physics	1	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	Physics	1	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	Physics	1	The ratio between the number of conducting cycles and the sum of conducting and non-conducting cycles in the case of multicycle control.
natural characteristic	Physics	1	A characteristic determined only by the basic parts of the equipment, e.g. transformer and valve device assembly.
non-conducting direction	Physics	1	The reverse of the conducting direction.
non-controllable connection	Physics	1	A uniform connection with all principal arms non-controllable.
non-controllable valve device	Physics	1	A reverse blocking valve device the current path of which conducts in its conducting direction without any control signal being applied.
rectifier diode	Physics	1	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	Physics	1	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.
us	Physics	1	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	Physics	1	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	Physics	1	A connection with both controllable and non-controllable principal arms.
off state	Physics	1	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.
forward blocking state	Physics	1	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	Physics	1	The condition when conducting current flows through an electronic valve device or an arm.
conducting state	Physics	1	The condition when conducting current flows through an electronic valve device or an arm.
one-quadrant converter	Physics	1	An AC/DC or DC converter with one possible direction of DC power flow.
operating temperature	Physics	1	The temperature of the hottest point on the case of the capacitor in thermal equilibrium.
overpressure disconnector	Physics	1	A disconnecting device designed to interrupt the current path in the case of abnormal increase of the internal pressure.
pair of antiparallel arms	Physics	1	Two valve arms in parallel with opposite conducting directions.
pair of arms	Physics	1	Two series connected valve arms with the same conducting direction.
parallel operation	Physics	1	A mode of operation of stabilized power supplies in which all similar output terminals are connected together and arranged so that the total load is shared by all the supplies.
phase control factor	Physics	1	In the case of phase control, the ratio of the voltage at prevailing current delay angle to the voltage at zero current delay angle, all voltage drops being assumed to be zero.
phase converter	Physics	1	An AC converter for changing the number of phases.
phase control	Physics	1	The process of varying the instant within the cycle at which current conduction in an electronic valve device or a valve arm begins.
power electronic capacitor	Physics	1	A power capacitor intended to be used in power electronic equipment and capable of operating continuously under non-sinusoidal current or voltage.
power electronics	Physics	1	The field of electronics which deals with the conversion or switching of electric power with or without control of that power.
principal arm	Physics	1	A valve arm involved in the major transfer of power from one side of the converter or electronic switch to the other.
pulse control	Physics	1	The process of varying the starting or termination instants or both of a repeated current conduction in a principal arm.
pulse control factor	Physics	1	The conduction ratio of a principal arm in the case of pulse duration control, assuming the commutation inductance to be zero.
pulse frequency	Physics	1	The repetition rate of periodic current pulses.
fp	Physics	1	The repetition rate of periodic current pulses.
pulse frequency control	Physics	1	Pulse control at variable frequency and fixed pulse duration.
pulse number	Physics	1	The number of non-simultaneous symmetrical direct or indirect commutations from one principal arm to another which occur during one elementary period.
pulse width modulation control	Physics	1	Pulse control in which the pulse width or frequency or both are modulated within each fundamental period to produce a certain output waveform.
pwm control	Physics	1	Pulse control in which the pulse width or frequency or both are modulated within each fundamental period to produce a certain output waveform.
abbreviation	Physics	1	Pulse control in which the pulse width or frequency or both are modulated within each fundamental period to produce a certain output waveform.
quenching	Physics	1	The termination of current flow in an arm without commutation.
quenching voltage	Physics	1	The voltage which causes quenching of the current.
reactive power converter	Physics	1	A converter for reactive power compensation that generates or consumes reactive power without the flow of active power except for the power losses in the converter.
rated ac voltage	Physics	1	The maximum operating peak recurrent voltage of either polarity of a reversing type waveform for which the capacitor has been designed.
un	Physics	1	The maximum operating peak voltage of either polarity but of a non-reversing type wave form, for which the capacitor has been designed, for continuous operation.
rated dc voltage	Physics	1	The maximum operating peak voltage of either polarity but of a non-reversing type wave form, for which the capacitor has been designed, for continuous operation.
real no-load direct voltage	Physics	1	The actual mean direct voltage at zero direct current.
(power) rectification	Physics	1	Electronic conversion from AC to DC
rectification factor	Physics	1	For rectification, the ratio of the DC power to the fundamental input power.
rectifier	Physics	1	An AC/DC converter for rectification.
regenerative arm	Physics	1	A valve arm which transfers a part of the power from the load side to the source side.
(power) resistance control	Physics	1	Control using the continuous variation of the resistance of electronic devices.
resistive direct voltage regulation	Physics	1	The direct voltage regulation due to resistance (threshold voltages of electronic valve devices excluded).
resonant converter	Physics	1	A converter using (a) resonant circuit(s) to provide commutation or to reduce switching losses .
resonant frequency	Physics	1	The lowest frequency at which the impedance of the capacitor becomes minimum.
fr	Physics	1	The lowest frequency at which the impedance of the capacitor becomes minimum.
reversible converter	Physics	1	A converter in which the direction of the power flow is reversible.
reverse blocking state	Physics	1	the non-conducting state of a reverse blocking valve device or an arm consisting of such devices when reverse voltage is applied between its main terminals (electrodes).
reverse blocking valve device	Physics	1	A valve device which is capable of blocking a specified direct voltage applied in its non-conducting direction.
reverse breakdown	Physics	1	A failure that permanently deprives a reverse blocking valve device or an arm consisting of such devices of its property to block reverse voltage.
ripple voltage	Physics	1	The peak-to-peak alternating voltage component of the voltage on the DC side of a converter.
slave operation	Physics	1	A mode of operation of stabilized power supplies achieving coordinated control of interconnected stabilized supplies by setting the master supply alone.
self-commutation	Physics	1	A commutation where the commutating voltage is supplied by components within the converter or the electronic switch.
self-healing metallized dielectric capacitor	Physics	1	A capacitor, the electrodes of which are deposited on the dielectric (usually by evaporation); in the event of breakdown of the dielectric, the capacitor restores itself.
semiconductor converter	Physics	1	An power converter with semiconductor valve devices.
semiconductor switch	Physics	1	An electronic power switch with semiconductor valve devices.
semiconductor valve device	Physics	1	An electronic valve device which is a semiconductor device.
sequential phase control	Physics	1	Asymmetrical phase control such that the delay angles are determined according to a given sequence.
single converter	Physics	1	A current stiff reversible AC/DC converter with direct current in one direction.
single-way connection	Physics	1	A converter connection such that the current through each of the phase terminals of the AC circuit is unidirectional.
snubber	Physics	1	A subcircuit connected to one or more electronic valve devices in order to relieve it (them) of stress as for instance overvoltage transients, switching losses, high rate of rise of current or voltage, etc.
circuit	Physics	1	A subcircuit connected to one or more electronic valve devices in order to relieve it (them) of stress as for instance overvoltage transients, switching losses, high rate of rise of current or voltage, etc.
stabilized current characteristic	Physics	1	A characteristic with a stabilized output current.

ui

Physics

1

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

Physics

1

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

Physics

1

For inversion, the ratio of the fundamental output power to the DC power.

ideal no-load direct voltage

Physics

1

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

Physics

1

That part of an elementary period in which the valve arm does not conduct.

ionic valve device

Physics

1

An electronic valve device in which the effects of the ionization of a gas play an important role.

filled valve device

Physics

1

An electronic valve device in which the effects of the ionization of a gas play an important role.

(power) inversion

Physics

1

Electronic conversion from DC to AC

inverter

Physics

1

AC/DC converter for inversion.

jumping characteristic

Physics

1

The property of an equipment to jump from one characteristic to another, e.g. by changing the predetermined value of a stabilizing device.

latching valve device

Physics

1

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

Physics

1

An external commutation where the commutating voltage is supplied by the line.

load commutation

Physics

1

An external commutation where the commutating voltage is taken from a load other than the line.

lowest operating temperature

Physics

1

The lowest temperature at which the capacitormay be energized.

θmin

Physics

1

The lowest temperature at which the capacitormay be energized.

machine commutation

Physics

1

External commutation where the commutating voltage is supplied by a rotating machine.

maximum current

Physics

1

The maximum RMS current for continuous operation.

imax

Physics

1

The maximum RMS current for continuous operation.

maximum loss power

Physics

1

The maximum loss power with which the capacitor may be loaded at the maximum case temperature.

pmax

Physics

1

The maximum loss power with which the capacitor may be loaded at the maximum case temperature.

maximum operating temperature

Physics

1

The highest temperature of the case at which capacitor may be operated.

θmax

Physics

1

The highest temperature of the case at which capacitor may be operated.

maximum peak current

Physics

1

The maximum current amplitude which occurs instantaneously during continuous operation.

i

Physics

1

The maximum current amplitude which occurs instantaneously during continuous operation.

maximum surge current

Physics

1

The admissible peak current induced by a switching or any other disturbance of the system which is allowed for a limited number of times.

is

Physics

1

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

Physics

1

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.

non self-healing

Physics

1

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

Physics

1

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

Physics

1

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

Physics

1

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

Physics

1

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

Physics

1

The ratio between the number of conducting cycles and the sum of conducting and non-conducting cycles in the case of multicycle control.

natural characteristic

Physics

1

A characteristic determined only by the basic parts of the equipment, e.g. transformer and valve device assembly.

non-conducting direction

Physics

1

The reverse of the conducting direction.

non-controllable connection

Physics

1

A uniform connection with all principal arms non-controllable.

non-controllable valve device

Physics

1

A reverse blocking valve device the current path of which conducts in its conducting direction without any control signal being applied.

rectifier diode

Physics

1

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

Physics

1

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.

us

Physics

1

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

Physics

1

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

Physics

1

A connection with both controllable and non-controllable principal arms.

off state

Physics

1

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.

forward blocking state

Physics

1

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

Physics

1

The condition when conducting current flows through an electronic valve device or an arm.

conducting state

Physics

1

The condition when conducting current flows through an electronic valve device or an arm.

one-quadrant converter

Physics

1

An AC/DC or DC converter with one possible direction of DC power flow.

operating temperature

Physics

1

The temperature of the hottest point on the case of the capacitor in thermal equilibrium.

overpressure disconnector

Physics

1

A disconnecting device designed to interrupt the current path in the case of abnormal increase of the internal pressure.

pair of antiparallel arms

Physics

1

Two valve arms in parallel with opposite conducting directions.

pair of arms

Physics

1

Two series connected valve arms with the same conducting direction.

parallel operation

Physics

1

A mode of operation of stabilized power supplies in which all similar output terminals are connected together and arranged so that the total load is shared by all the supplies.

phase control factor

Physics

1

In the case of phase control, the ratio of the voltage at prevailing current delay angle to the voltage at zero current delay angle, all voltage drops being assumed to be zero.

phase converter

Physics

1

An AC converter for changing the number of phases.

phase control

Physics

1

The process of varying the instant within the cycle at which current conduction in an electronic valve device or a valve arm begins.

power electronic capacitor

Physics

1

A power capacitor intended to be used in power electronic equipment and capable of operating continuously under non-sinusoidal current or voltage.

power electronics

Physics

1

The field of electronics which deals with the conversion or switching of electric power with or without control of that power.

principal arm

Physics

1

A valve arm involved in the major transfer of power from one side of the converter or electronic switch to the other.

pulse control

Physics

1

The process of varying the starting or termination instants or both of a repeated current conduction in a principal arm.

pulse control factor

Physics

1

The conduction ratio of a principal arm in the case of pulse duration control, assuming the commutation inductance to be zero.

pulse frequency

Physics

1

The repetition rate of periodic current pulses.

fp

Physics

1

The repetition rate of periodic current pulses.

pulse frequency control

Physics

1

Pulse control at variable frequency and fixed pulse duration.

pulse number

Physics

1

The number of non-simultaneous symmetrical direct or indirect commutations from one principal arm to another which occur during one elementary period.

pulse width modulation control

Physics

1

Pulse control in which the pulse width or frequency or both are modulated within each fundamental period to produce a certain output waveform.

pwm control

Physics

1

Pulse control in which the pulse width or frequency or both are modulated within each fundamental period to produce a certain output waveform.

abbreviation

Physics

1

Pulse control in which the pulse width or frequency or both are modulated within each fundamental period to produce a certain output waveform.

quenching

Physics

1

The termination of current flow in an arm without commutation.

quenching voltage

Physics

1

The voltage which causes quenching of the current.

reactive power converter

Physics

1

A converter for reactive power compensation that generates or consumes reactive power without the flow of active power except for the power losses in the converter.

rated ac voltage

Physics

1

The maximum operating peak recurrent voltage of either polarity of a reversing type waveform for which the capacitor has been designed.

un

Physics

1

The maximum operating peak voltage of either polarity but of a non-reversing type wave form, for which the capacitor has been designed, for continuous operation.

rated dc voltage

Physics

1

The maximum operating peak voltage of either polarity but of a non-reversing type wave form, for which the capacitor has been designed, for continuous operation.

real no-load direct voltage

Physics

1

The actual mean direct voltage at zero direct current.

(power) rectification

Physics

1

Electronic conversion from AC to DC

rectification factor

Physics

1

For rectification, the ratio of the DC power to the fundamental input power.

rectifier

Physics

1

An AC/DC converter for rectification.

regenerative arm

Physics

1

A valve arm which transfers a part of the power from the load side to the source side.

(power) resistance control

Physics

1

Control using the continuous variation of the resistance of electronic devices.

resistive direct voltage regulation

Physics

1

The direct voltage regulation due to resistance (threshold voltages of electronic valve devices excluded).

resonant converter

Physics

1

A converter using (a) resonant circuit(s) to provide commutation or to reduce switching losses .

resonant frequency

Physics

1

The lowest frequency at which the impedance of the capacitor becomes minimum.

fr

Physics

1

The lowest frequency at which the impedance of the capacitor becomes minimum.

reversible converter

Physics

1

A converter in which the direction of the power flow is reversible.

reverse blocking state

Physics

1

the non-conducting state of a reverse blocking valve device or an arm consisting of such devices when reverse voltage is applied between its main terminals (electrodes).

reverse blocking valve device

Physics

1

A valve device which is capable of blocking a specified direct voltage applied in its non-conducting direction.

reverse breakdown

Physics

1

A failure that permanently deprives a reverse blocking valve device or an arm consisting of such devices of its property to block reverse voltage.

ripple voltage

Physics

1

The peak-to-peak alternating voltage component of the voltage on the DC side of a converter.

slave operation

Physics

1

A mode of operation of stabilized power supplies achieving coordinated control of interconnected stabilized supplies by setting the master supply alone.

self-commutation

Physics

1

A commutation where the commutating voltage is supplied by components within the converter or the electronic switch.

self-healing metallized dielectric capacitor

Physics

1

A capacitor, the electrodes of which are deposited on the dielectric (usually by evaporation); in the event of breakdown of the dielectric, the capacitor restores itself.

semiconductor converter

Physics

1

An power converter with semiconductor valve devices.

semiconductor switch

Physics

1

An electronic power switch with semiconductor valve devices.

semiconductor valve device

Physics

1

An electronic valve device which is a semiconductor device.

sequential phase control

Physics

1

Asymmetrical phase control such that the delay angles are determined according to a given sequence.

single converter

Physics

1

A current stiff reversible AC/DC converter with direct current in one direction.

single-way connection

Physics

1

A converter connection such that the current through each of the phase terminals of the AC circuit is unidirectional.

snubber

Physics

1

A subcircuit connected to one or more electronic valve devices in order to relieve it (them) of stress as for instance overvoltage transients, switching losses, high rate of rise of current or voltage, etc.

circuit

Physics

1

A subcircuit connected to one or more electronic valve devices in order to relieve it (them) of stress as for instance overvoltage transients, switching losses, high rate of rise of current or voltage, etc.

stabilized current characteristic

Physics

1

A characteristic with a stabilized output current.