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Udc and idc increases when throttle is applied

Posted: Sun Aug 25, 2024 9:53 am
by Riwi
Hi!

Was doing some tuning on the c202 yesterday and I noticed that idc and I’d care increasing when I apply throttle. Udc starts of at approx 190V and goes above 200V (I have a 48S battery)

Idc starts at around -16 and moves toward 0.

What did I miss?

This is the current config. I’m running rev 3 hw and version 5.32.R-foc.

{
"iqkp": 60,
"idkp": 100,
"curki": 4000,
"vlimflt": 11,
"vlimmargin": 2500,
"fwcurmax": 0,
"syncofs": 1000,
"lqminusld": 0.59,
"fluxlinkage": 90,
"syncadv": 10,
"polepairs": 4,
"respolepairs": 4,
"sincosofs": 2048,
"encmode": 4,
"fmax": 200,
"numimp": 400,
"dirchrpm": 100,
"dirmode": 1,
"snsm": 14,
"pwmfrq": 1,
"pwmpol": 1,
"deadtime": 78,
"ocurlim": 500,
"il1gain": 2.31,
"il2gain": 2.31,
"udcgain": 5.21,
"udcofs": 250,
"udclim": 540,
"snshs": 6,
"pinswap": 6,
"modmax": 37836,
"potmin": 475,
"potmax": 3130,
"pot2min": 231,
"pot2max": 1590,
"potmode": 1,
"throtramp": 2,
"throtramprpm": 20000,
"throtcur": 3.5,
"brakeregen": 0,
"regenramp": 1,
"regentravel": 15,
"offthrotregen": -20,
"cruiseregen": -20,
"regenrampstr": 25,
"brklightout": -50,
"bmslimhigh": 50,
"bmslimlow": -1,
"udcmin": 160,
"udcmax": 200,
"idcmax": 500,
"idcmin": -200,
"idckp": 2,
"idcflt": 9,
"tmphsmax": 100,
"tmpmmax": 150,
"throtmax": 100,
"throtmin": -100,
"accelmax": 1000,
"accelflt": 3,
"chargemode": 0,
"chargecur": 0,
"chargekp": 80,
"chargeki": 10,
"chargeflt": 8,
"chargepwmin": 0,
"chargepwmax": 83.5,
"idlespeed": -100,
"idlethrotlim": 50,
"idlemode": 3,
"holdkp": -0.25,
"speedkp": 0.18,
"speedflt": 5,
"cruisemode": 0,
"cruisethrotlim": 50,
"udcsw": 160,
"udcswbuck": 540,
"tripmode": 0,
"bootprec": 0,
"pwmfunc": 0,
"pwmgain": 100,
"pwmofs": 0,
"canspeed": 1,
"canperiod": 1,
"nodeid": 1,
"controlid": 63,
"controlcheck": 1,
"manualstart": 0,
"manualiq": 0,
"manualid": 0
}

Re: Udc and idc increases when throttle is applied

Posted: Sun Aug 25, 2024 1:35 pm
by johu
Idc is calculated from AC currents and at low current seems inaccurate.
udc does indeed increase when the inverter starts pulsing, that is down to Nissans board or the way I interface to it.
So far it looks like nothing to worry about

Re: Udc and idc increases when throttle is applied

Posted: Sun Aug 25, 2024 5:14 pm
by Riwi
Thank you!