Method and device for controlling a multiphase resonant DC/DC converter, and corresponding multiphase converter
AssigneeValeo Equipements Electriques Moteur
InventorsPatrick Dubus, Gang Yang
Life of this patent
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Abstract
A method for controlling a multiphase resonant DC/DC converter comprising a plurality of identical elementary resonant DC/DC converters connected in parallel. The method comprises the steps of measuring each of the supply currents (IR1, IR2, . . . IRn) of the elementary converters for balancing the supply currents (IR1, IR2, . . . IRn) and controlling switching frequencies (F1, F2, . . . Fn) of the elementary converters according to the supply currents (IR1, IR2, . . . IRn), so as to carry out the balancing. The supply currents (IR1, IR2, . . . IRn) are measured in the elementary DC/DC converters in order to balance these same currents.
Claims7
A method for controlling a multiphase resonant DC/DC converter comprising a plurality of identical elementary resonant DC/DC converters connected in parallel and provided with supply currents (IR1, IR2, . . . IRn) the method comprising the steps of:
- measuring each of the supply currents (IR1, IR2, . . . IRn) of the elementary converters for balancing the supply currents (IR1, IR2, . . . IRn);
- controlling switching frequencies (F1, F2, . . . Fn) of the elementary converters according to the supply currents (IR1, IR2, . . . IRn), so as to carry out the balancing;
- and
- setting the supply currents (IR1, IR2, . . . IRn) to a common reference intensity (Iref) which is determined according to a difference between an output voltage (Vo) of the multiphase converter and a nominal voltage (Vref).
A device for controlling a multiphase resonant DC/DC converter comprising a plurality of identical elementary resonant DC/DC converters connected in parallel and provided with supply currents (IR1, IR2, . . . IRn), the device comprising:
- an intensity measurement device for each of the supply currents (1R1, IR2, . . . IRn) of the elementary converters for balancing the supply currents (IR1, IR2, . . . IRn), and configured to implement a method for controlling the multiphase resonant DC/DC converter;
- a comparator between an output voltage (Vo) of the multiphase converter and a nominal voltage (Vref);
- and
- a regulation loop which sets the supply currents (IR1, IR2, . . . IRn) to a common reference intensity (Iref);
- the method for controlling comprising the steps of:
- measuring each of the supply currents (IR1, IR2, . . . IRn) of the elementary converters for balancing the supply currents (IR1, IR2, . . . IRn);and
- controlling switching frequencies (F1, F2, . . . Fn)of the elementary converters according to the supply currents (IR1, IR2, . . . IRn)so as to carry out the balancing;
- the device further comprising frequency generators (21) which generate the switching frequencies (F1, F2 , . . . Fnfor the elementary converters according to the supply currents (IR1, IR2, . . . IRn.
A multiphase resonant DC/DC converter, comprising a control device for controlling a multiphase resonant DC/DC converter comprising a plurality of identical elementary resonant DC/DC converters connected in parallel and provided with supply currents (IR1, IR2, . . . IRn), the control device comprising:
- an intensity measurement device for each of the supply currents (1R1, 1R2, 1Rn) of the elementary converters for balancing the supply currents (IR1, IR2, . . . 1Rnand configured to implement a method for controlling the multiphase resonant DC/DC converter;
- a comparator between an output voltage (Vo) of the multiphase converter and a nominal voltage (Vref);
- and
- a regulation loop which sets the supply currents I1, IR2, . . . 1Rn) to a common reference intensity (Iref);
- the method for controlling comprising the steps of:
- measuring each of the supply currents (I1, IR2, . . . IRn) of the elementary converters for balancing the supply currents (IR1, IR2, . . . IRn);
- and
- controlling switching frequencies (F1F2, . . . Fn) of the elementary converters according to the supply currents (IR1, IR2, . . . IRn)so as to carry out the balancing;
- the device further comprising frequency generators (21) which generate the switching frequencies (F1, F2, . . . for the elementary converters according to the supply currents (IR1, IR2, . . . IRn.
Dependencies are inferred from the claim text.