speed control of AC drives
ASIC technology reduces elevators costs
Mixed Signal ASIC
|Industrial sector (PRODCOM code)
||Lifting and Handling Equipment
PUARSA is a 211 employees company that delivers components
and systems to the European lifts distributors since 1976. PUARSA designs
and manufactures all the components required for an elevator system, and
its turnover in 1998 was 22 MEUR. The industrial sector of the company
is "Lifting and Handling Equipment", NACE 2922 according to the EU standard
classification of economic activities.
PUARSA acts as the manufacturing part of an industrial group involving
five companies. The company product is only elevators and parts of elevators
systems, which are sold via commercial companies of the same group, either
as complete turnkey systems to builders, or as components to other elevators
manufacturers. The product application area is quite obvious: moving people
and goods to different floors of tall buildings, both residential and
Puarsa has recently developed as a part of its elevator systems a new
7.5 HP variable speed drive for induction motors, based on microprocessor
and a standard PWM chip, using vector control techniques in order to improve
speed control and, consequently, to increase comfort level in elevator
cabin. To achieve this precise control of speed and position a speed sensor
In order to reduce costs and increase reliability of this product, the
company intended to replace the costly and delicate optical encoder used
as by an electronic device that estimated the speed of the motor. This
approach would provide great savings in manufacturing, adjusting and maintenance
costs. In this way, PUARSA will reach a more advantageous position in
The objective of the Application Experiment was the development of this
speed sensor. The sensor estimates the speed of the motor by measuring
waveforms of voltages and currents in the motor, already available for
the Vector Control system, and performs a complex estimation algorithm
based on a precise model of the electro-dynamic behaviour of the induction
In order to get the desired performance and cost, mixed-ASIC technology
is required. This will be the first project of this company using this
technology, as its previous experience was in electronic design was with
microcontroller, DSP and FPGA technology.
The total cost of the Application Experiment was 137 KEUR and it was completed
in 19 months. The industrialisation costs were of additional 5 KEUR. The
estimated payback period is 20 months, and the Return Of Investment over
3 years is app. 320%.
The project will help the company to improve its market share, and will
consolidate its position as market leader in Spain.
CALLE H 22
E - 50171 ZARAGOZA
|You can also benefit from microelectronics
Mixed Signal ASIC technology provided PUARSA with the means of improving
its products and enhancing its market position. You can also achieve significant
benefits by acquiring the right microelectronics technology and utilising
it in your product or manufacturing process. You can get help from FUSE
to realise this.
FUSE is a technology transfer programme, funded by the European Commission to stimulate the wider use of microelectronics technologies by European enterprises to increase their competitiveness and enhance their economic growth. The demonstrator described here is one of many examples in the public FUSE portfolio covering the whole spectrum of microelectronics technologies and spanning a wide range of applications and industry sectors.
FUSE provides you with:
- Best practice in acquiring specific microelectronics technologies and conducting full development projects through the FUSE portfolio of real life demonstrator documents.
- Local training and expert support to plan your innovation realistically and help you conduct your project successfully.
Further information and support relating to this and other demonstrators can be obtained from the addresses below.
||Guiding Technology Transfer Node
|For further information and support regarding this case study, please contact a Technology Transfer Node (TTN) in your region.
C/Marques De Urquijo 26, 1 C, Izq.