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DSP Technology
The primary reason
for using a DSP instead of a traditional microprocessor is speed, the
ability to move samples into the device, carry out the needed
mathematical operations, and output the processed data.
Why Use DSPs?
The innovation of
DSP control into power electronic designs is an excellent example of
the advantages provided by major technological advances. By replacing
classic control with DSP control, the primary advantages are achieved
by replacing hardware with flexible software. The advantages are even
more dramatic because they don't just extend to reducing cost and
increasing performance over classic designs. They can extend to many
corners of the organization and include overall staff reductions and
the advantages that standardization of designs across product lines
bring, depending on the company. Following are the potential benefits
for you, the customer.
- Lower Cost.
The controller will reduce the material cost of the customer's
equipment, labor content, and overhead related to both materials and
labor (purchasing transactions cost, accounting transactions costs,
factory overhead). This reduction may be from 20% to 50% of the cost of
the unit depending on the equipment power rating.
- Reduction in
the size and weight of the unit . As with calculators in the early
1970's, technological advancement allows equipment to become smaller
and lighter. Smaller and lighter can translate into several cost
reductions including labor, transportation, and materials.
- Increased
performance . The fast math-intensive functions and high execution
speed allow for faster control response and correction to achieve
desired parameters and therefore a better performing machine.
- Automation of
in-house testing . The DSP software allows for automation of the
testing process, thus reducing the labor content of the technical staff.
- Increased
design flexibility . The software within the DSP can be easily modified
to optimize the application once in use in the field or if the
application changes once the unit is installed.
- Ease of
design modification or troubleshooting in the field . Customers wanting
to diagnose or modify the functionality of their equipment once they
receive it can have it done via software and modem rather than
returning it to the factory or having an expensive service call.
- A reduction
in energy consumption . Active harmonic cancellation and better energy
management achieved by the real-time control of the DSP and the
software that controls it reduces energy consumption.
- Standardization
across product lines . The same controller board can be used for a
battery charger, an inverter or a switched mode power supplies; thus
economics are achieved by reducing the number of components in
inventory across numerous product lines as well as the overhead
associated with specifying and purchasing components
- Reduced Time to market . Software is certainly easier to revise than manufactured hardware.
DSP Applications
Motor
Drives
| Solar Applications |
| |
| Active Power Factor Correction(PFC)
and Harmonic Cancellation |
| Power Supplies (linear and
switched mode) |
| Online Ups
and Sine wave Offline Ups (Uninterruptible
Power Supplies & Systems) |
| Inverters (AC/DC, DC/DC, DC/AC,
AC/AC Frequency Changer) |
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| Hybrid Inverter / Hybrid UPS
/ Hybrid Systems |
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