User`s manual

APPENDIX B: GUI DS2100 User's Manual
C27750-001 PAGE 49
B.3.16.35 Current Loop
The Current Loop panel allows the user to set/read the current loop compensator configuration and to
monitor some internal loop variables.
The current control consists of a pair of compensators, one for the q-axis current control and the other for
d-axis current control. The feedback currents ‘current_q-axis_observer’ and ‘current_d-axis_observer’ are
output from the predictive current state observers.
CONFIGURATION:
• d-axis p-gain (Kp) → The p-gain of the d-axis compensator (Volts/Amp).
• d-axis i-gain (Ki) → The i-gain of the d-axis compensator (Volts/Amp/Tsamp).
• q-axis p-gain (Kp) → The p-gain of the q-axis compensator (Volts/Amp).
• q-axis i-gain (Ki) → The i-gain of the q-axis compensator (Volts/Amp/Tsamp).
• observer alpha comp. p-gain (Kp) → The p-gain of the observer alpha compensator
(Volts/Amp).
• observer alpha comp. i-gain (Ki) → The i-gain of the observer alpha compensator
(Volts/Amp/Tsamp).
• observer beta comp. p-gain (Kp) → The p-gain of the observer beta compensator (Volts/Amp).
• observer beta comp. i-gain (Ki) → v i-gain of the observer beta compensator
(Volts/Amp/Tsamp).
• current loop gain foldback breakpoint (A) → the current at which the current loop gain foldback
starts
• current loop gain foldback minimum → the minimum value for the current loop gain foldback
expressed as a fraction.
• Motor velocity loop rate divider → The rate divider for the motor velocity calculation – the
number of current loop samples per motor velocity sample