Device for recharging an automobile battery and method for managing the device
First Claim
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1. A rapid charging device for a battery, comprising:
- a filtering stage of resistive-inductive-capacitive type to be connected to a three-phase network;
a buck stage;
a boost stage to be connected to terminals of the battery;
an induction winding which forms part of an electric machine and is electrically coupled between the buck stage and the boost stage; and
a regulating unit configured to impose chopping duty cycles on the buck stage and on the boost stage, in which the regulating unit comprises a first control module configured to compensate for the phase shift induced by the filtering stage between the currents and the voltages taken from each phase of the three-phase network, and also configured to maintain the value of the current amplitude passing through the winding above a non-zero predefined threshold by adjusting current passing through the electrical machine Idref as a function of the following formula;
Idref=Max{Iedref,Ibattref}+A, where;
Iedref is the current setpoint at the input of the rapid charging device,Ibattref is the battery setpoint current delivered by a charge monitoring module, andA is an arbitrary current constant to be fixed in value.
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Abstract
A rapid charging device for a battery includes a filtering stage of resistive-inductive-capacitive type to be connected to a three-phase network, a buck stage, a boost stage to be connected to the battery, an induction winding interposed between the buck stage and the boost stage, and a regulating unit capable of imposing chopping duty cycles on the buck stage and on the boost stage. The regulating unit compensates the phase shift induced by the filtering stage between the currents and the voltages taken from each phase of the three-phase network and also maintains the value of the current amplitude passing through the winding above a non-zero predefined threshold.
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Citations
10 Claims
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1. A rapid charging device for a battery, comprising:
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a filtering stage of resistive-inductive-capacitive type to be connected to a three-phase network; a buck stage; a boost stage to be connected to terminals of the battery; an induction winding which forms part of an electric machine and is electrically coupled between the buck stage and the boost stage; and a regulating unit configured to impose chopping duty cycles on the buck stage and on the boost stage, in which the regulating unit comprises a first control module configured to compensate for the phase shift induced by the filtering stage between the currents and the voltages taken from each phase of the three-phase network, and also configured to maintain the value of the current amplitude passing through the winding above a non-zero predefined threshold by adjusting current passing through the electrical machine Idref as a function of the following formula;
Idref=Max{Iedref,Ibattref}+A, where;Iedref is the current setpoint at the input of the rapid charging device, Ibattref is the battery setpoint current delivered by a charge monitoring module, and A is an arbitrary current constant to be fixed in value. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for regulating a rapid charging device for a battery from a three-phase current, the battery coupled to an induction winding of an electrical machine, comprising:
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controlling the chopping duty cycles (a1, a2, a3) of a buck stage, during which there is compensated, by combining the results of two regulating loops, a phase shift induced by a filtering stage of resistive-capacitive-inductive type, between the input current intensities (Ie1, Ie2, Ie3) of the rapid charging device and the input voltages (Ve1, Ve2, Ve3) of the rapid charging device; and adjusting current passing through the induction winding of the electrical machine Idref as a function of the following formula;
Idref=Max{Iedref,Ibattref}+A, where;Iedef is the current setpoint at the input of the rapid charging device, Ibattref is the battery setpoint current delivered by a charge monitoring module, and A is an arbitrary current constant to be fixed in value. - View Dependent Claims (9, 10)
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Specification