Gree CVT series permanent magnet synchronous variable frequency centrifugal high water temperature unit is specially developed for data centers, with optimized design for 12-20 ℃ outlet conditions. It is a new generation of high chilled water outlet temperature centrifugal chiller developed on the basis of Gree permanent magnet synchronous variable frequency centrifugal unit. By using high-speed permanent magnet synchronous variable frequency motor, the partial load performance is greatly improved, achieving dual high performance at full load and partial load, with COP reaching 10.18 and IPLV (HT) reaching 17.43. This unit adopts PWM controllable rectification four quadrant frequency conversion technology, with a total harmonic distortion rate THD<5%, and does not require separate installation of harmonic processing and reactive power compensation devices for this unit. This unit has outstanding energy-saving, reliability, and adaptability, and can be widely used in data centers, supercomputing centers, cloud computing centers, communication rooms, communication, IoT, transportation energy, laboratories, large office buildings, and process flow. It can also be directly replaced to carry out energy-saving renovations on existing air conditioning systems, especially suitable for the following areas: A, large-scale cooling systems with independent temperature and humidity control. B， All places that require the use of 12-20 ℃ cold water. C， Large scale cooling without dehumidification in the low humidity areas of the northwest.