Chapter 6 – Firmware Description
ACA 635 IGBT Supply Sections
6-11
Control Diagram
A block diagram of the measurements and principle of the ISU control
program is shown below. S1, S2 and S3 denote the power switches.
Controllers
The control includes two main controllers:
•
torque and flux hysteresis control
•
dc voltage controller
On the basis of measurements the following items are calculated:
•
actual value for flux
•
actual value for torque
•
actual value for reactive power
•
estimate for frequency
Direct torque and flux
hysteresis control
calculation
Actual value
Reference value
control
flux
torque
Hysteresis
Flux ref.
Torque ref.
Optimal
switching
logic
ASICs
Torque bits
Flux bits
Control bits
S1, S1, S3
DC voltage
S1, S2, S3
L
Current
Actual
Actual
DC voltage
calculation
Switching
frequency control
Supply network
Switching frequency reference
Summary of Contents for ACS 600 MultiDrive
Page 4: ......
Page 8: ...Safety Instructions vi ACA 635 IGBT Supply Sections ...
Page 57: ...Chapter 7 Fault Tracing 7 8 ACA 635 IGBT Supply Sections ...
Page 99: ...Appendix B Circuit Diagrams B 2 ACA 635 IGBT Supply Sections H ...
Page 100: ...Appendix B Circuit Diagrams ACA 635 IGBT Supply Sections B 3 ...
Page 101: ...Appendix B Circuit Diagrams B 4 ACA 635 IGBT Supply Sections ...
Page 102: ...Appendix B Circuit Diagrams ACA 635 IGBT Supply Sections B 5 ...
Page 103: ...Appendix B Circuit Diagrams B 6 ACA 635 IGBT Supply Sections ...
Page 104: ...Appendix B Circuit Diagrams ACA 635 IGBT Supply Sections B 7 ...
Page 105: ...Appendix B Circuit Diagrams B 8 ACA 635 IGBT Supply Sections ...
Page 106: ...Appendix B Circuit Diagrams ACA 635 IGBT Supply Sections B 9 ...
Page 107: ...Appendix B Circuit Diagrams B 10 ACA 635 IGBT Supply Sections ...
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