AN1911 Freescale Semiconductor / Motorola, AN1911 Datasheet - Page 7

• Manufacturer Part Number: AN1911
• Description: 3-Phase AC Motor Control with V/Hz Speed Open Loop Using DSP56F80X
• Manufacturer: Freescale Semiconductor / Motorola

The DSP runs the main control algorithm. According to the user interface input and feedback signals,
it generates 3-phase PWM output signals for the motor inverter.
A standard system concept is chosen for the drive (see
following hardware boards:
Motor Characteristics:
Drive Characteristics:
Load Characteristic:
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Power Supply Rectifier
Three-phase inverter
Feedback sensors: speed, DC-Bus Voltage, DC-Bus Current, Temperature
Optoisolation
Evaluation Board DSP56F80X
Indirect Power Factor Correction Using DSP56F80X
Freescale Semiconductor, Inc.
For More Information On This Product,
Table 4-1. Motor / Drive Specification
Base Electrical Frequency:
Max. Electrical Power:
Max DC Bus Voltage
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Delta Voltage (rms):
Control Algorithm
Speed Range:
Speed Range
Transducers:
Optoisolation
Motor Type
Line Input:
Type
Figure
4 poles, three phase, star connected,
4-1). The system incorporates the
(standard industrial motor)
IRC -1024 pulses per rev.
squirrel cage AC motor
< 2250 rpm @ 230 V
<1200 rpm @ 115 V
Open Loop Control
230V / 50Hz AC
115V / 60Hz AC
< 5000 rpm
200V (Star)
Required
System Design Concept
Varying
180 W
50 Hz
400 V
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