TDE MACNO MINIOPD EXP, Руководство пользователя, Страница: 32 / 124

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2.2.4 CURRENT CONTROL
Current regulators generate the voltage reference values required to ensure torque and flux currents
that are equal to their reference values.
The current signals processed by these regulators are expressed according to the maximum drive
current, which means that they are affected by the ratio between the rated motor current and the
rated drive current (P61). To ensure good control, this ratio should not drop below 35 - 40% i.e. Do
not use a drive that is more than two and a half times larger than the motor, nor a motor that is more
than one and a half times larger than the drive.
The flux current is displayed as a percentage of the rated motor current in d16, while the torque
current is displayed as a percentage of the rated motor current in d15. The constants of these
regulators are established in engineering units by parameters
P83
, proportional gain Kp;
P84
, time in
ms of the lead time constant Ta equal to the integral regulator time constant multiplied by the gain
(Ta = Ti*Kp); and
P85
, filter constant in ms.
Parameters P83 and P84 cannot be changed directly because they are considered to be
perfectly calculated by the auto-tuning. P83 can only be changed by accessing TDE MACNO
reserved parameter P126 “Multiplication coefficient Kp and current loop
”
There is dynamic decoupling between the direct axis and the orthogonal axis with a low default gain.
Should there be any doubts as to whether the dynamic decoupling is working properly, then it can be
disabled by setting
C59=1
.
Name Description Min Max Default UM Scale
I_REG_KP
P83 - Kpc current regulator proportional
gain
0.1 100.0 2.6 10
I_REG_TI
P84 - Tic current regulator lead time
constant
0.0 1000.0 8.5 ms 10
I_REG_TF
P85 - Tfc current regulator (filter) time
constant
0.0 25.0 0 ms 10
PRC_I_REG_KP_COE
FF P126 - KpI Corrective coeff. estimated Kp
for current loops
0.0 200.0 100 % 40.96
PRC_I_DECOUP
P158 - Corrective coefficient for
decoupling terms
0.0 200.0 0 % 40.96
DIS_I_DECOUP
C59 - Disable dynamic deco
feedfoward
0 1 0 1
I_DELAY_COMP
P160 - PWM delay compensation on the
currents
-800.0 800.0 40 % TPWM 40.96
PRC_IQ_REF D07 - Request torque current Iq rif -100 100 0 % DRV_I_NOM 40.96
PRC_ID_REF D08 - Request magnetizing current Id rif -100 100 0 % DRV_I_NOM 40.96
PRC_IQ D15 - Current torque component -100 100 0 % DRV_I_NOM 40.96
PRC_ID D16 - Current magnetizing component -100 100 0 % DRV_I_NOM 40.96
PRC_VQ_REF D20 - Vq rif -100 100 0 % MOT_V_NOM 40.96
PRC_VD_REF D22 - Vd rif -100 100 0 % MOT_V_NOM 40.96
MOT_I D11 - Current module 0 A rms 16
EL_FRQ D13 - Rotor flux frequency 0 Hz 16
ACTV_POW D01 - Active power delivered 0 kW 16
SLI_FREQ D34 - Slip frequency -20 20.0 0 Hz 40.96
PRC_MOT_T D35 - Actual torque produced -400 400 0 % MOT_T_NOM 40.96