US 11,742,782 B2
Method for operating a synchronous motor excited by permanent magnets, electronic control device, motor arrangement, and storage medium
Dominik Schulte, Mühltal (DE); Bogdan Budianu, Oberursel (DE); Eugen Bartel, Wetzlar (DE); and Tom Kaufmann, Ippenschied (DE)
Assigned to Continental Teves AG & Co. OHG, Frankfurt am Main (DE)
Filed by Continental Teves AG & Co. OHG, Frankfurt am Main (DE)
Filed on May 2, 2022, as Appl. No. 17/661,632.
Application 17/661,632 is a continuation of application No. 17/177,746, filed on Feb. 17, 2021, granted, now 11,362,610.
Application 17/177,746 is a continuation of application No. PCT/EP2019/070314, filed on Jul. 29, 2019.
Claims priority of application No. 10 2018 213 939.3 (DE), filed on Aug. 17, 2018.
Prior Publication US 2022/0263444 A1, Aug. 18, 2022
Int. Cl. H02P 21/13 (2006.01); H02P 21/22 (2016.01); H02P 27/12 (2006.01); B60R 16/03 (2006.01)
CPC H02P 21/22 (2016.02) [H02P 27/12 (2013.01); B60R 16/03 (2013.01); H02P 2207/05 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A method for operating a permanent magnet synchronous motor, the method comprising the following steps:
setting a maximum power;
determining a current vector in the dq coordinate system on the basis of one of a torque requirement and a power limitation and a torque requirement;
determining an output voltage vector in the dq coordinate system;
calculating a setpoint amount for a setpoint voltage vector on the basis of the maximum power, the current vector and the output voltage vector;
generating the setpoint voltage vector with the setpoint amount;
operating the permanent magnet synchronous motor at least with the setpoint voltage vector;
calculating the setpoint amount as the product of the factor ⅔ with a quotient comprising a dividend and a divisor;
calculating the dividend as the product of the maximum power and the amount of the output voltage vector; and
calculating the divisor as the sum of the product of the d components of the output voltage vector and the current vector on the one hand and the product of the q components of the output voltage vector and the current vector on the other hand.
 
5. An electronic control device with instructions comprising:
setting a maximum power;
determining a current vector in the dq coordinate system on the basis of one of a torque requirement and a power limitation and a torque requirement;
determining an output voltage vector in the dq coordinate system;
calculating a setpoint amount for a setpoint voltage vector on the basis of the maximum power, the current vector and the output voltage vector;
generating the setpoint voltage vector with the setpoint amount;
operating the permanent magnet synchronous motor at least with the setpoint voltage vector;
calculating the setpoint amount as the product of the factor ⅔ with a quotient comprising a dividend and a divisor;
calculating the dividend as the product of the maximum power and the amount of the output voltage vector; and
calculating the divisor as the sum of the product of the d components of the output voltage vector and the current vector and the product of the q components of the output voltage vector and the current vector.
 
8. A motor arrangement comprising:
a permanent magnet synchronous motor,
an inverter for controlling the permanent magnet synchronous motor; and
an electronic control device for controlling the inverter by setting a maximum power;
determining a current vector in the dq coordinate system on the basis of one of a torque requirement and a power limitation and a torque requirement;
determining an output voltage vector in the dq coordinate system;
calculating a setpoint amount for a setpoint voltage vector on the basis of the maximum power, the current vector and the output voltage vector;
generating the setpoint voltage vector with the setpoint amount;
operating the permanent magnet synchronous motor at least with the setpoint voltage vector;
calculating the setpoint amount as the product of the factor ⅔ with a quotient comprising a dividend and a divisor;
calculating the dividend as the product of the maximum power and the amount of the output voltage vector; and
calculating the divisor as the sum of the product of the d components of the output voltage vector and the current vector and the product of the q components of the output voltage vector and the current vector.