Freescale Semiconductor, Inc.
Designer Reference Manual — 3-ph. ACIM Drive with DTC
List of Figures
Figure
Title
Page
2-1
2-2
2-3
2-4
2-5
3-1
3-2
3-3
4-1
4-2
4-3
4-4
5-1
5-2
5-3
5-4
5-5
5-6
System Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Volt per Hertz Ramp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Dead Time Distortion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Topology of Current Polarity Sensing. . . . . . . . . . . . . . . . . . . .21
Proposed Current Threshold for Correction Toggling. . . . . . . .24
Hardware Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
MC68HC908MR32 Control Board . . . . . . . . . . . . . . . . . . . . . .30
3-Phase AC High Voltage Power Stage . . . . . . . . . . . . . . . . . .32
Data Flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
3-Phase Sine Waves with Amplitude of 50% . . . . . . . . . . . . . .40
mcgen3PhWaveSine Data Explanation - Phase A. . . . . . . . . .41
Dead Time Correction State Machine. . . . . . . . . . . . . . . . . . . .45
Setup of the Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
MC68HC908MR32 Jumper Reference. . . . . . . . . . . . . . . . . . .52
Execute Make Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
Control Elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
USER LEDs, PWM LEDs, and RESET . . . . . . . . . . . . . . . . . .55
PC Master Software Control Window . . . . . . . . . . . . . . . . . . . .58
DRM019 — Rev 0
MOTOROLA
Designer Reference Manual
9
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