Advanced frequency conversion technology of Mitsubishi Electric central air conditioner

Advanced frequency conversion technology of Mitsubishi Electric central air conditioner Advanced-frequency-conversion-technology-of-mitsubishi-electric-central-air-conditioner Since 1952, Mitsubishi Electric has entered the field of semiconductor research and development. After more than half a century of development, Mitsubishi Electric has possessed power module products covering various fields such as home appliances, industry, communications, etc., and occupies industry advantages in terms of market share and product performance with excellent quality. As a manufacturer of compressors, power modules, air conditioners, and ventilation equipment in the industry, Mitsubishi Electric has perfectly integrated the advanced power semiconductor technology and air conditioning products in the group, resulting in high energy efficiency, high comfort, and high stability air conditioning. Was born. ■ The core frequency conversion --- compressor speed adjustment The fifth-generation NX series IGBT module adopting Mitsubishi CSTBTTM silicon technology integrates NTC temperature-measuring resistance, has strong power cycle resistance and thermal cycle capability, and is a technical guarantee for variable capacity and energy-saving operation of multi-unit air conditioning (heat pump) units. ■ The core frequency conversion --- fan motor speed adjustment The fan motor power module uses Mitsubishi's fourth-generation DIPIPMTM, built-in ultra-low-loss fifth-generation CSTBTTM silicon chip, miniaturization through low thermal resistance packaging technology, integrated drive circuit, undervoltage protection and short circuit protection circuit, 1200V/10A large capacity The specifications can easily cope with the linear adjustment of the speed of the fan motor of the large air volume of the upper fan group. ■ The core frequency conversion --- patented PWM technology application In order to ensure that the compressor always maintains high efficiency during the speed change, the CITY MULTI series multi-unit air conditioner (heat pump) unit also uses the patented PWM (Pulse Width Modulation) pulse width modulation technology, the corrected voltage and current waveforms tend to be smooth, Increased power utilization efficiency. Whether it is low thermal resistance packaging technology or pulse width modulation technology, Mitsubishi Electric's frequency conversion technology is absolutely gratifying. With the precipitation of culture and the accumulation of technology, Mitsubishi Electric has only one purpose-to excel in energy conservation and to protect the environment.

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