UM-YROTATE-IT-RX62T datasheet(26/54 Pages) RENESAS

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RX62T

YROTATE-IT-RX62T Motor Control Kit

UM-YROTATE-IT-RX62T Rev.1.00

Page 26 of 51

Jan 15, 2014

Phase currents (iumea, ivmea) reading

Transformations (using the phase angle

ϑ):

(iumea, ivmea) → (iamea, ibmea) → (idmea, iqmea)

Read DC Link voltage vbus

Control interrupt

Current PI controls use (idref, iqref), (idmea,iqmea) to produce (vdout, vqout)

Transformations (using the phase angle

ϑ):

(vdout, vqout) → (vaout, vbout) → (vuout, vvout)

PWM output commands generation (using vuout, vvout)

vbus is used to calculate maximum phase voltage (used in current PI controls)

Phase estimation based on old_vaout, old_vbout, iamea, ibmea,

produces new estimated phase angle

est

Voltage memories update: old_vaout = vaout, old_vbout = vbout

Speed estimation produces

est

Estimation errors detection (if errors an alarm is produced)

Start-up in progress?

YES

idref = 0

Speed PI control uses (

ref,

est) to obtain iqref

Start-up procedure produces idref, iqref,

stup

Phase angle update:

ϑ = ϑ

new

new =

stup

new =

est

cnt_int > 0 ?

YES

--cnt_int

Main loop

synchronization

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