Abstract: A synchronous rotating electrical machine is disclosed, of the type including a stator (10) and a rotor (11). The rotor is of the flux concentration type and includes a plurality of alternate North and South poles formed from permanent magnets (PM). The magnets are housed in slots (E1) arranged in the magnetic body of the rotor. The rotor includes, for each permanent magnet, a magnetic circuit allowing the circulation of a defluxing magnetic flux. This magnetic circuit has a magnetic reluctance of the defluxing circuit (Rf) determined as a function of an internal magnetic reluctance of the magnet (Ra) such that the ratio (Rf/Ra) of the magnetic reluctance of the defluxing circuit on the internal magnetic reluctance of the magnet (Ra) is within a range of predetermined values guaranteeing the magnet against a risk of demagnetization. This range of predetermined values is from approximately 0.3 to approximately 3 depending on the type of magnet.

Abstract: A method for braking the thermal engine of an automobile using a multiple-phase rotary electric machine (1) connected to the thermal engine and including a stator and a rotor (4) having at least one excitation winding (41). A shortcut of at least one phase of the multiple-phase rotary machine is included during the stop phase of the thermal engine. The multiple-phase rotary electric machine is capable of braking the thermal engine of an automobile during the stop phase thereof due to the fact that a shortcut is induced, during the stop phase of the thermal engine, of at least one of the phases thereof.

Abstract: A synchronous rotating electrical machine is disclosed, of the type including a stator (10) and a rotor (11). The rotor is of the flux concentration type and includes a plurality of alternate North and South poles formed from permanent magnets (PM). The magnets are housed in slots (E1) arranged in the magnetic body of the rotor. Each pole comprises a second slot (E3) roughly radial and arranged in the magnetic body of the pole, between two consecutive magnets delimiting the pole. In accordance with the invention, each pole includes a portion forming a bridge (BR) between the magnetic bodies of the rotor, on either side of the second slot, this part forming a bridge including a magnetic body height not greater than approximately one times the dimensional value of the width of the permanent magnets.

Abstract: A machine (1) having a rotor (11) including permanent magnets (PM) and field coils (EC). The magnets are housed in first axial recesses (E1) distributed in a circumferential portion of the magnetic body, thus defining circumferential polar sections. The coils are housed in second axial recesses (E2) distributed in an intermediate portion of the magnetic body and defining polar teeth (RT). The circumferential polar section includes a third recess (E3) having a maximum width at the top thereof, and the ratio of the maximum width of the third recess to a pole width of the circumferential polar section has a value of around 0.13 mm to around 0.44 mm.

Abstract: A machine (1) having a rotor (11) including permanent magnets (PM) and field coils (EC). The magnets are housed in first axial recesses (E1) distributed within a circumferential portion of the magnetic body, thus defining circumferential polar sections. The coils are housed in second axial recesses (E2) distributed within an intermediate portion of the magnetic body and defining pole teeth (RT). The ratio of a width of a pole tooth to a height of a permanent magnet is around 0.65 to around 1.

Abstract: A machine (1) having a rotor (11) including permanent magnets (PM) and field coils (EC). The magnets are housed in first axial recesses (E1) distributed within a circumferential portion of the magnetic body, thus defining circumferential polar sections. The coils are housed in second axial recesses (E2) distributed within an intermediate portion of the magnetic body. The circumferential polar section includes a third recess (E3), and a portion of the magnetic body forming a bridge having a height of around 0.7 mm to around 2 mm is retained between an apex of the recess and an outer pole face.

Abstract: The regulating method is employed in a polyphase rotating electrical machine operating as a generator and having an excitation coil (10). The method is of the type in which a DC voltage (B+) is slaved to a predetermined setpoint, the voltage being produced by rectifying an AC voltage generated by the machine by controlling the duty cycle of a periodic excitation current (+EXC,?EXC) by means of a microcontroller (11), or the like, as a function of sampled values of the DC voltage (B+). The duty cycle is determined by the microcontroller (11) twice during an excitation current cycle (+EXC, ?EXC).

Abstract: A micro-hybrid system (1) including an electric energy storage unit (12) and an electronic control unit (14). The storage unit includes a plurality of elementary cells mounted in series. A method includes the steps of: reading the elementary electric voltages of the elementary cells; deriving information on the state of the storage unit from the read voltages; and taking into account in the control unit the state information for defining an optimal driving of the micro-hybrid system. An electric energy storage unit and a micro-hybrid system with braking recovery is also disclosed.

Abstract: A micro-hybrid system (27) is connected to an on-board electrical network (V+) of a first heat engine (28) of a vehicle, whereby the first heat engine having a first cubic capacity which is greater than or equal to a first predetermined value. The system (27) comprises a number equal to two or more of identical starter-alternator devices (1) which are mechanically coupled to the first heat engine (28). The torque and power characteristics of each of the starter-alternator devices (1, 16), while not being adapted to the first heat engine (28), are adapted to a second heat engine having a second cubic capacity which is less than or equal to a second predetermined value equal to a fraction of the first predetermined value. The system is adapted to an application to large heat engines and allows a certain degree of standardization of starter-alternator devices.

Abstract: The invention relates to an energy storage device, particularly for an automobile, that comprises: an assembly (2) of serially-connected energy storage cells; a balancing circuit adapted for balancing the cells during the discharge thereof by enabling the flow of one or more balancing currents in one or more cells of the assembly (2); optionally a diagnosis system (61) for providing at least one piece of information associated with at least one cell in the assembly; wherein the balancing circuit (10; 41) is adapted for controlling the balancing current(s) based at least on external information independent from the energy-storage cell assembly and/or information associated with at least one of the cells and provided by the optional diagnosis system.

Abstract: A method of controlling a supercapacitor energy storage unit (12), included in a motor vehicle micro-hybrid system, is disclosed. The storage unit is suitable for performing the functions of an alternator, starter and automatic stop-restart of the vehicle heat engine, regenerative braking and torque assistance. The energy storage unit (12) is a plurality of supercapacitor elementary cells connected in series (C1 to C10) and capable of delivering information (Vmax, Temp and DeltaV) on its internal status. The method includes various stages of: comparing a temperature (Temp) with at least one temperature threshold (ST1=55° C., ST2=65° C. and ST3=70° C.); and, deciding on limitations of the availability of functions of the unit when the (Temp) information reaches the temperature threshold (ST1=55° C., ST2=65° C. and ST3=70° C.).

Abstract: A method of controlling a supercapacitor energy storage unit (12), included in a motor vehicle micro-hybrid system, is disclosed. The storage unit is suitable for performing the functions of an alternator, starter and automatic stop-restart of the vehicle heat engine, regenerative braking and torque assistance. The energy storage unit (12) is a plurality of supercapacitor elementary cells connected in series (C1 to C10) and capable of delivering information (Vmax, Temp and DeltaV) on its internal status. The method includes various stages of: comparing a maximum elementary voltage (Vmax) with a first voltage threshold (Vmax1); comparing a temperature (Temp) with at least one temperature threshold (ST1=55° C., ST2=65° C. and ST3=70° C.); and, deciding on limitations of the availability of functions of the unit when the (Vmax) information reaches threshold (Vmax1) for a predetermined duration (T) and/or when the (Temp) information reaches the temperature threshold (ST1=55° C., ST2=65° C. and ST3=70° C.).

Abstract: A synchronous rotating electrical machine is disclosed, of the type including a stator (10) and a rotor (11). The rotor is of the flux concentration type and includes a plurality of alternate North and South poles formed from permanent magnets (PM). The magnets are housed in slots (E1) arranged in the magnetic body of the rotor. Each pole comprises a second slot (E3) roughly radial and arranged in the magnetic body of the pole, between two consecutive magnets delimiting the pole. In accordance with the invention, each pole includes a portion forming a bridge (BR) between the magnetic bodies of the rotor, on either side of the second slot, this part forming a bridge including a magnetic body height not greater than approximately one times the dimensional value of the width of the permanent magnets.

Abstract: A synchronous rotating electrical machine is disclosed, of the type including a stator (10) and a rotor (11). The rotor is of the flux concentration type and includes a plurality of alternate North and South poles formed from permanent magnets (PM). The magnets are housed in slots (E1) arranged in the magnetic body of the rotor. The rotor includes, for each permanent magnet, a magnetic circuit allowing the circulation of a defluxing magnetic flux. This magnetic circuit has a magnetic reluctance of the defluxing circuit (Rf) determined as a function of an internal magnetic reluctance of the magnet (Ra) such that the ratio (Rf/Ra) of the magnetic reluctance of the defluxing circuit on the internal magnetic reluctance of the magnet (Ra) is within a range of predetermined values guaranteeing the magnet against a risk of demagnetisation. This range of predetermined values is from approximately 0.3 to approximately 3 depending on the type of magnet.

Abstract: Described is a micro-hybrid system for an automobile including: 1)a rotating electrical machine (i.e., a starter/alternator); 2) at least one power converter connectable to an electricity distribution network of the automobile, this network including a power storage unit; and, 3)a control circuit capable of controlling the power converter to provide a power supply current to the electricity distribution network.

Abstract: The regulating method is employed in a polyphase rotating electrical machine operating as a generator and having an excitation coil (10). The method is of the type in which a DC voltage (B+) is slaved to a predetermined setpoint, the voltage being produced by rectifying an AC voltage generated by the machine by controlling the duty cycle of a periodic excitation current (+EXC,?EXC) by means of a microcontroller (11), or the like, as a function of sampled values of the DC voltage (B+). The duty cycle is determined by the microcontroller (11) twice during an excitation current cycle (+EXC, ?EXC).

Abstract: A micro-hybrid system (1) including an electric energy storage unit (12) and an electronic control unit (14). The storage unit includes a plurality of elementary cells mounted in series. A method includes the steps of: reading the elementary electric voltages of the elementary cells; deriving information on the state of the storage unit from the read voltages; and taking into account in the control unit the state information for defining an optimal driving of the micro-hybrid system. An electric energy storage unit and a micro-hybrid system with braking recovery is also disclosed.

Abstract: A method for braking the thermal engine of an automobile using a multiple-phase rotary electric machine (1) connected to the thermal engine and including a stator and a rotor (4) having at least one excitation winding (41). A shortcut of at least one phase of the multiple-phase rotary machine is included during the stop phase of the thermal engine. The multiple-phase rotary electric machine is capable of braking the thermal engine of an automobile during the stop phase thereof due to the fact that a shortcut is induced, during the stop phase of the thermal engine, of at least one of the phases thereof.

Abstract: The invention relates to an energy storage device, particularly for an automobile, that comprises: an assembly (2) of serially-connected energy storage cells; a balancing circuit adapted for balancing the cells during the discharge thereof by enabling the flow of one or more balancing currents in one or more cells of the assembly (2); optionally a diagnosis system (61) for providing at least one piece of information associated with at least one cell in the assembly; wherein the balancing circuit (10; 41) is adapted for controlling the balancing current(s) based at least on external information independent from the energy-storage cell assembly and/or information associated with at least one of the cells and provided by the optional diagnosis system.

Abstract: A micro-hybrid system (27) is connected to an on-board electrical network (V+) of a first heat engine (28) of a vehicle, whereby the first heat engine having a first cubic capacity which is greater than or equal to a first predetermined value. The system (27) comprises a number equal to two or more of identical starter-alternator devices (1) which are mechanically coupled to the first heat engine (28). The torque and power characteristics of each of the starter-alternator devices (1, 16), while not being adapted to the first heat engine (28), are adapted to a second heat engine having a second cubic capacity which is less than or equal to a second predetermined value equal to a fraction of the first predetermined value. The system is adapted to an application to large heat engines and allows a certain degree of standardization of starter-alternator devices.