Energy saving in drives using ZCT ZVT DC-DC converters, PWM inverters in variable speed compressor applications

S. Jahdi*, M. Fry, L. L. Lai

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

Abstract

Despite past technologies which were using Steam turbine or Gas turbines to drive industrial compressors, Today, most compressors used in refrigeration and gas compression purposes are using Induction motors with PWM (Pulse Width Modulation) Inverters as a drive or DC motors in heavy industrial loads with DC/DC converters installed. This is due to the fact that these technologies help us to deduct energy consumption and CO2 emissions which are known as important environmental issues in today's world. As a brief, one of the main advantages gained by the use of these is the fact that the compressors can supply just the exact amount of cooling required. Supplying cooling at a higher level will be avoided and energy will be saved automatically. In this paper we will introduce new application of Zero Current PWM forward converter in compressors with DC drives, presenting a study on how using VSD drive technology or DC-based drive to save energy in compressor and pumping applications. Affects of usages of PWM Inverters/DC-DC converters on lubrication; cooling and parallel compressors usages will be discussed. In the proposed DC converter, zero current switching condition is achieved for the switches while the control circuit still remains PWM to act as a DC drive. The proposed AC inverter/DC Converter is analysed. Simulation results presented which confirm the theoretical analysis.

Original languageEnglish
Title of host publicationInstitution of Mechanical Engineers - 7th International Conference on Compressors and Their Systems 2011
PublisherWoodhead Publishing Limited
Pages283-294
Number of pages12
ISBN (Print)9780857092083
Publication statusPublished - 1 Jan 2011
Event7th International Conference on Compressors and Their Systems 2011 - London, United Kingdom
Duration: 5 Sep 20116 Sep 2011

Conference

Conference7th International Conference on Compressors and Their Systems 2011
CountryUnited Kingdom
CityLondon
Period5/09/116/09/11

Keywords

  • Energy saving
  • Pwm inverter
  • Variable speed drives
  • Zero current switching
  • Zero voltage switching

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    Jahdi, S., Fry, M., & Lai, L. L. (2011). Energy saving in drives using ZCT ZVT DC-DC converters, PWM inverters in variable speed compressor applications. In Institution of Mechanical Engineers - 7th International Conference on Compressors and Their Systems 2011 (pp. 283-294). Woodhead Publishing Limited.