System for piloting an electric motor in electric motorcycles or the like

1. System ( 1 ) for piloting an electric motor in electric motorcycles or the like operatively connectable to at least a control inverter (I) of an electric motor (E) of an electric motorcycle (M) and to a control device (C) of the acceleration of said electric motorcycle (M), wherein said system ( 1 ) comprises:

dynamic generation means ( 10 ) of at least a piloting signal (T OUT ) of said inverter (I) according to a control signal (G) coming from said control device (C) and to at least a maximum deliverable/absorbable current value (I MAX , RI MAX ) by at least an electric battery (B) of said electric motorcycle (M),

wherein said piloting signal (T OUT ) corresponds to a delivered torque value to said electric motor (E),

wherein said dynamic generation means ( 10 ) comprise at least a first calculation unit ( 15 ) of at least a maximum deliverable and/or regeneration torque value (T MAX , RT MAX ) according to said at least a maximum deliverable/absorbable current value (I MAX , RI MAX ) by said electric battery (B), to an output voltage value (V B ) of said electric battery (B) and to a rotation speed value (RPM) of said electric motor (M), and

wherein said delivered torque value is variable between said maximum deliverable torque value (T MAX ) and said maximum regeneration torque value (RT MAX ); wherein said delivered torque value (T OUT ) is calculated using the following formula:

T OUT =[G *( T MAX +RT MAX )− RT MAX ], with 0≤ G≤ 1

where:

T OUT is said piloting signal;

G is said control signal;

T MAX is said maximum deliverable torque value; and

RT MAX is said maximum regeneration torque value.

2. System ( 1 ) according to claim 1 , wherein said dynamic generation means ( 10 ) comprise at least a first calculation unit ( 15 ) of at least a maximum deliverable and/or regeneration torque value (T MAX , RT MAX ) according to said at least a maximum deliverable/absorbable current value (I MAX , RI MAX ) by said electric battery (B), to an output voltage value (V B ) of said electric battery (B) and to a rotation speed value (RPM) of said electric motor (M).

3. System ( 1 ) according to claim 2 , wherein said dynamic generation means ( 10 ) comprise at least a second calculation unit ( 16 ) of said piloting signal (T OUT ) according to said maximum deliverable and/or regeneration torque value (T MAX , RT MAX ) and to said control signal (G).

4. System ( 1 ) according to claim 1 , wherein said first calculation unit ( 15 ) comprises at least a determination unit ( 24 , 33 ) of at least a reference torque value (T REF , RT REF ) according to said output voltage value (V B ), to said rotation speed value (RPM) and to at least a reference current value (I REF ).

5. System ( 1 ) according to claim 4 , wherein said determination unit ( 24 , 33 ) comprises storage means of a plurality of predefined ratios between reference torque values (T REF , RT REF ), output voltage values (V B ) and rotational speed values (RPM), wherein said predefined ratios are predetermined considering a current delivered/absorbed by said electric battery (B) equal to said at least a reference current value (I REF ).

6. System ( 1 ) according to claim 2 , wherein said first calculation unit ( 15 ) comprises first selection means ( 17 ) of at least a current multiplication coefficient (MapI 0 , MapI 1 , MapI 2 , MapI 3 ) among a plurality of coefficients (MapI 0 , MapI 1 , MapI 2 , MapI 3 ) corresponding to different operating modes of said electric motorcycle (M) and at least a multiplication unit ( 19 ) of said maximum deliverable/absorbable current value (I MAX ) by said selected multiplication coefficient (MapI 0 , MapI 1 , MapI 2 , MapI 3 ).

7. System ( 1 ) according to claim 2 , wherein said first calculation unit ( 15 ) comprises setting means ( 29 , 37 ) of at least a maximum threshold torque value among a plurality of threshold values (MapT 0 , MapT 1 , MapT 2 , MapT 3 , RMapT 0 , RMapT 1 , RMapT 2 , RMapT 3 ) corresponding to different operating modes of said electric motorcycle (M) and at least a limitation unit ( 31 , 39 ) of said maximum torque value (T MAX , RT MAX ) to said selected threshold value (MapT 0 , MapT 1 , MapT 2 , MapT 3 , RMapT 0 , RMapT 1 , RMapT 2 , RMapT 3 ).

8. System ( 1 ) for piloting an electric motor in electric motorcycles or the like operatively connectable to at least a control inverter (I) of an electric motor (E) of an electric motorcycle (M) and to a control device (C) of the acceleration of said electric motorcycle (M), wherein said system ( 1 ) comprises dynamic generation means ( 10 ) of at least a piloting signal (T OUT ) of said inverter (I) according to a control signal (G) coming from said control device (C) and to at least a maximum deliverable/absorbable current value (I MAX , RI MAX ) by at least an electric battery (B) of said electric motorcycle (M),

wherein said dynamic generation means ( 10 ) comprise at least a first calculation unit ( 15 ) of at least a maximum deliverable and/or regeneration torque value (T MAX , RT MAX ) according to said at least a maximum deliverable/absorbable current value (I MAX , RI MAX ) by said electric battery (B), to an output voltage value (V B ) of said electric battery (B) and to a rotation speed value (RPM) of said electric motor (M),

wherein said first calculation unit ( 15 ) comprises at least a determination unit ( 24 , 33 ) of at least a reference torque value (T REF , RT REF ) according to said output voltage value (V B ), to said rotation speed value (RPM) and to at least a reference current value (I REF ),

wherein said first calculation unit ( 15 ) comprises at least a division unit ( 25 , 34 ) of said maximum deliverable/absorbable current value (I MAX , RI MAX ) over said reference current value (I REF ) to determine at least a multiplier parameter (MLP 1 , MLP 2 ), said multiplier parameter (MLP 1 , MLP 2 ) being determined using at least one of the following formulas:

MLP1= I MAX /I REF

MLP2= RI MAX /I REF

where:

MLP 1 is said multiplier parameter determined during an active operating phase of said system ( 1 );

MLP 2 is said multiplier parameter determined during a regeneration operating phase of said system ( 1 );

I MAX is said maximum deliverable current value;

RI MAX is said maximum absorbable current value; and

I REF is said reference current value.

9. System ( 1 ) according to claim 8 , wherein said first calculation unit ( 15 ) comprises at least a multiplication unit ( 26 , 35 ) between said reference torque value (T REF , RT REF ) and said multiplier parameter (MLP 1 , MLP 2 ) to obtain said maximum deliverable torque value (T MAX ) and said maximum regeneration torque value (RT MAX ), said maximum deliverable torque value (T MAX ) and said maximum regeneration torque value (RT MAX ) being determined using the following formulas:

T MAX =T REF *MLP1

RT MAX =RT REF *MLP2

where:

T MAX is said maximum deliverable torque value;

T REF is said reference torque value determined during said active operating phase;

MLP 1 is said multiplier parameter determined during said active operating phase;

RT MAX is said maximum regeneration torque value;

RT REF is said reference torque value determined during said regeneration operating phase; and

MLP 2 is said multiplier parameter determined during said regeneration operating phase.

10. System ( 1 ) according to claim 1 , wherein said system ( 1 ) comprises at least a selection unit ( 11 , 13 , 20 , 22 ) of said maximum current value (I MAX , RI MAX ) of the lesser of at least a predefined maximum deliverable/absorbable current threshold value (I MAX _ THR , RI MAX _ THR ) and at least a maximum deliverable/absorbable current dynamic value (I MAX _ BMS , RI MAX _ BMS ) calculated according to the temperature and/or to the charge level of said electric battery (B).

11. System ( 1 ) according to claim 8 , wherein said piloting signal (T OUT ) corresponds to a delivered torque value to said electric motor (E).

12. System ( 1 ) according to claim 8 , wherein:

said dynamic generation means ( 10 ) comprise at least a first calculation unit ( 15 ) of at least a maximum deliverable and/or regeneration torque value (T MAX , RT MAX ) according to said at least a maximum deliverable/absorbable current value (I MAX , RI MAX ) by said electric battery (B), to an output voltage value (V B ) of said electric battery (B) and to a rotation speed value (RPM) of said electric motor (M); and

said delivered torque value is variable between said maximum deliverable torque value (T MAX ) and said maximum regeneration torque value (RT MAX ).