Find out about our new technological developments by visiting us at Stand F.
The AIST Chapter México A.C. and AMI Automation, invite you to attend the Congress and Exhibition of the Steel Industry, the largest steelmaking congress in all of Latin America and the only one of its kind from March 23 to 25 at the Magno Salón de Cintermex, Monterrey. We look forward to seeing you at our City.
Technical presentations:
- Producto de Doble Propósito by Bernardo Sainz, Rommel Villarreal, Christopher Uliana.
Abstract: Upgrading the direct current Drive and Motor System to the more modern alternate current (AC) technology requires high levels of investment and extended shutdown times. Partially postponing or updating systems involves changes throughout the energy conversion device chain (drives, motors, installation, etc.). Nowadays, an option exists which makes it possible to upgrade while taking advantage of new drive technologies, by using an inverter for induction motors programmed to energize a DC motor. The new dual purpose drive technology helps facilitate upgrade by allowing replacement of only the DC drives with standard AC inverters, while reusing the remaining system components such as motors, wiring, instruments, etc. This makes it possible to prevent system obsolescence without sacrificing the upgrade to AC technology, in more appropriate shutdown times and with gradual replacement of induction motors according to the capital and line stoppage budgets.
- Bloqueo Seguro en Drives de CA y CD by Bernardo Sainz, José Gilberto Castillón, Rommel Villarreal.
Abstract: Long products mills are prone to a high level of product changeover. Each product changeover may involve disabling or completely changing a stand. International safety standards demand that each person involved in the process of changing the stand apply an effective and individual lock on the Drive or Drives of the stands that will be intervened. This regulation implies exposing not necessarily qualified personnel to electrical panels, with their inherent hazards. Additionally, qualified electrical personnel may be inevitably exposed to highly caloric energy in each operation of the connection switch. This article describes methods used to mitigate the exposure to risk of electrical accident for both mechanical and electrical personnel, as well as improving productivity by minimizing downtime and increasing the lifetime of Drives, by reducing maneuvers.
- Método novedoso para asegurar la confiabilidad del motor de CD by Bernardo Sainz, David Leal, Eric Martinez.
Abstract: For decades the DC electric motor has been an indispensable element in the transformation of paper, resulting in an important installed base, and therefore in a fixed asset not negligible. Recent advances in drive systems offer alternatives that allow the use of IGBT’s converters with PWM technology also in DC motors, typically used in AC motor control. However, when using IGBT / PWM, this technology has effects such as voltage spikes with sudden changes and common mode voltages. These effects can cause further deterioration on the insulation and bearings of the existing motor. This article presents a novel filter design that achieves optimal performance by mitigating these effects, presenting advantages over traditional RLC filters, such as size, economy, efficiency, versatility, modularity and scalability.
