摘要:
Disclosed is a voltage control device in a generator driven by an internal combustion engine. Said control device is fitted with a Load Response Function (LRF) which prevents a rapid increase in exciting current when a powerful electric consumer is turned on. Load Response function is inhibited during falling rotational speeds while the vehicle is running by an appropriate control circuit evaluating internal combustion engine speed and generator speed in order to avoid as much as possible voltage dips which occur when this function is activated.
摘要:
In a voltage regulator for a generator that can be driven by an internal combustion engine, the end stage transistor for influencing the exciter current is driven by means of a pulse width modulator. The digital pulse width modulator used is part of an exciter current regulating circuit that uses the generator voltage as real value and regulates the pulse width duty factor depending on the sensed generator voltage. In addition, the system is dampened in that a whole duty factor period can be overridingly switched off. The duration of the overridingly switched off period can be adapted to the duty factor, so that voltage is changed independently of the duty factor. The maximum current rising rate can thus be limited by limiting the maximum rate of change of the pulse width modulator.
摘要:
The invention concerns a regulator for a three-phase current generator, wherein the generator phase voltage is evaluated. Said phase voltage is evaluated by means of a range comparator with variable thresholds. A signal (VCL), switched at each threshold adaptation, enables to produce a signal which is a function of the frequency and can be evaluated as measurement of the generator operating conditions.
摘要:
Disclosed is a voltage control device in a generator driven by an internal combustion engine. Said control device is fitted with a Load Response Function (LRF) which prevents a rapid increase in exciting current when a powerful electric consumer is turned on. Load Response function is inhibited during falling rotational speeds while the vehicle is running by an appropriate control circuit evaluating internal combustion engine speed and generator speed in order to avoid as much as possible voltage dips which occur when this function is activated.
摘要:
The invention concerns a regulator for a three-phase current generator, wherein the generator phase voltage is evaluated. Said phase voltage is evaluated by means of a range comparator with variable thresholds. A signal (VCL), switched at each threshold adaptation, enables to produce a signal which is a function of the frequency and can be evaluated as measurement of the generator operating conditions.
摘要:
In a voltage regulator for a generator that can be driven by an internal combustion engine, the end stage transistor for influencing the exciter current is driven by means of a pulse width modulator. The digital pulse width modulator used is part of an exciter current regulating circuit that uses the generator voltage as real value and regulates the pulse width duty factor depending on the sensed generator voltage. In addition, the system is dampened in that a whole duty factor period can be overridingly switched off. The duration of the overridingly switched off period can be adapted to the duty factor, so that voltage is changed independently of the duty factor. The maximum current rising rate can thus be limited by limiting the maximum rate of change of the pulse width modulator.