KEYWORDS: Fluctuations and noise, Mining, Sensors, Control systems, Circuit switching, Automation, Temperature control, Gas sensors, Switches, Carbon monoxide
This article considers the issues of improving the mode of operation of fans of mines and mines. In mines these fans are driven by asynchronous and synchronous motors of high power and high voltage. These motors consume a lot of electricity. In order to reduce the power consumption, automation of these fans is an urgent issue today. With this in mind, a scheme and requirements for automatic control of the mode of operation of artificial lung ventilation devices using a microprocessor of the chief dispatcher based on signals from gas sensors have been developed.
The paper considers the issues of effective direct start of high-voltage asynchronous motors of high power with the help of “thyristor voltage regulator - asynchronous motor” (TVR-AM) system. To increase the voltage and power of TVR in the work it is proposed to use series-parallel connected groups of thyristors (TG) instead of one thyristor TVR. The requirements to TG control signals, providing fail-safe thyristor commutation, have been scientifically proved and experimentally verified. In the proposed work a microprocessor device is used to monitor and control the simultaneous opening and closing of thyristors in each phase. Thyristors opening and closing instructions into microprocessor memory were compiled into C++ program.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.