EPE Association: EPE 2007 - Subtopic 17-2 - DS: Operating quality of systems

EPE 2007 - Subtopic 17-2 - DS: Operating quality of systems
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2007 - Conference > EPE 2007 - Topic 17: 'Operating quality of systems' > EPE 2007 - Subtopic 17-2 - DS: Operating quality of systems

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   Current Measurement-Based Detection of Load Torque Changes in a Variable Speed VSI Induction Motor Drive to Support Motor Diagnostics
By NIEMELÃ„ Markku; TIAINEN Risto; AHOLA Jero; LINDH Tuomo; SÃ„RKIMÃ„KI Ville [View]
[Download]

Abstract: Most spectrum analysis methods used to extract features from the vibration signal measured at the motor frame require the motor to be in the stationary state during the whole measurement. In this paper, the possibility to detect transient states based on the data available in an inverter is studied. The theoretical background is introduced, and practical measurements are carried out. The sensors that exist in the inverter are utilized, and the data is retrieved using ModbusTCP. No modifications to the inverter are required.

   Developing a Simple, Modern and Cost Effective System for EMC Pre-Compliance Measurements of Conducted Emissions
By OLIVARES Ricardo; LOPEZ Manuel; CARRASCO Hector; ROBLES Hernan; DIAZ Sergio; KELLER Valentin; FUENTES Cristian; PONTT Jorge; TORO Alam [View]
[Download]

Abstract: Reliability and safety of critical industrial processes depends on EMC of electronic equipments for ensuring signals integrity. Increasing complexity and quantity of power converters in industrial facilities state the challenge for efficient and fast testing for EMC compliance. This paper proposes a novel combination of EMC testing equipment for pre-compliance testing when EMC test sites are either unavailable or not appropriately priced for the given application. The proposed methods use modern data acquisition and processing equipment to allow a rapid development of hardware and software for in-house or out-in-the-field pre-compliance testing.

   Measurements of HF Current Propagation to Low Voltage Grid through Frequency Converter
By KOSONEN Antti; AHOLA Jero; SILVENTOINEN Pertti [View]
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Abstract: It is known that frequency converters generate both conducted and radiated noise that spreads out to the low-voltage distribution network and disturbs victim devices. Nowadays, it is also possible to utilize the low-voltage motor power cable between a frequency converter and an electric motor as a medium for data transmission. In this study, conducted noise propagation generated by the data transmission is measured and analyzed in the frequency-domain.

   Power Quality Monitoring System in a Low Cost Hardware/Software
By PARANHOS Igor [View]
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Abstract: Nowadays, the control over every minimal cost is being very important for the market competition. Since the electric energy bills represent a great amout of exepenses for the companies, the monitoring of the power quality helps to lower the energy costs and to prolong the machine's lifes. But, not every company can pay for an expensive resource that helps to minimaze the expenses. This paper presents studies and development of a low cost electrical energy monitoring system, that consists of a digital energy meter, a software for the system management, a database to store the measurements and a WebPage to monitor the energy quality from anywhere, through the internet. Algorithms of calculus are proposed for implementation. Physical environment and communication protocol are also proposed. Programming languages are studied and used to develop the software and database.

EPE 2007 - Subtopic 17-2 - DS: Operating quality of systems
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 2007 - Conference > EPE 2007 - Topic 17: 'Operating quality of systems' > EPE 2007 - Subtopic 17-2 - DS: Operating quality of systems
	[return to parent folder]

	Current Measurement-Based Detection of Load Torque Changes in a Variable Speed VSI Induction Motor Drive to Support Motor Diagnostics By NIEMELÃ„ Markku; TIAINEN Risto; AHOLA Jero; LINDH Tuomo; SÃ„RKIMÃ„KI Ville	[View] [Download]
Abstract: Most spectrum analysis methods used to extract features from the vibration signal measured at the motor frame require the motor to be in the stationary state during the whole measurement. In this paper, the possibility to detect transient states based on the data available in an inverter is studied. The theoretical background is introduced, and practical measurements are carried out. The sensors that exist in the inverter are utilized, and the data is retrieved using ModbusTCP. No modifications to the inverter are required.

	Developing a Simple, Modern and Cost Effective System for EMC Pre-Compliance Measurements of Conducted Emissions By OLIVARES Ricardo; LOPEZ Manuel; CARRASCO Hector; ROBLES Hernan; DIAZ Sergio; KELLER Valentin; FUENTES Cristian; PONTT Jorge; TORO Alam	[View] [Download]
Abstract: Reliability and safety of critical industrial processes depends on EMC of electronic equipments for ensuring signals integrity. Increasing complexity and quantity of power converters in industrial facilities state the challenge for efficient and fast testing for EMC compliance. This paper proposes a novel combination of EMC testing equipment for pre-compliance testing when EMC test sites are either unavailable or not appropriately priced for the given application. The proposed methods use modern data acquisition and processing equipment to allow a rapid development of hardware and software for in-house or out-in-the-field pre-compliance testing.

	Measurements of HF Current Propagation to Low Voltage Grid through Frequency Converter By KOSONEN Antti; AHOLA Jero; SILVENTOINEN Pertti	[View] [Download]
Abstract: It is known that frequency converters generate both conducted and radiated noise that spreads out to the low-voltage distribution network and disturbs victim devices. Nowadays, it is also possible to utilize the low-voltage motor power cable between a frequency converter and an electric motor as a medium for data transmission. In this study, conducted noise propagation generated by the data transmission is measured and analyzed in the frequency-domain.

	Power Quality Monitoring System in a Low Cost Hardware/Software By PARANHOS Igor	[View] [Download]
Abstract: Nowadays, the control over every minimal cost is being very important for the market competition. Since the electric energy bills represent a great amout of exepenses for the companies, the monitoring of the power quality helps to lower the energy costs and to prolong the machine's lifes. But, not every company can pay for an expensive resource that helps to minimaze the expenses. This paper presents studies and development of a low cost electrical energy monitoring system, that consists of a digital energy meter, a software for the system management, a database to store the measurements and a WebPage to monitor the energy quality from anywhere, through the internet. Algorithms of calculus are proposed for implementation. Physical environment and communication protocol are also proposed. Programming languages are studied and used to develop the software and database.