Many different power supply units are available for rail car air-conditioners,
supporting a broad choice of electric circuit configurations, both DC
and AC.
Air-conditioning inverters have circuits that suit power supply conditions
to supply stable power in three-phase alternate currents to air-conditioners,
and also to control the revolutions of compressors and fans for minute
capacity control.
Technologies for Air-Conditioning Inverters
 Presentation
of IPM
 Features
of IPM (Intelligent Power Module) Inverters
- IPM is a high-speed, high-performance switching element with self-protection
functions (protection from excess current, short circuits, overheating
and power supply voltage degradation).
- • Enhanced intelligence of the element for high reliability
• Substantial reduction of parts used for high reliability
• Integration of peripheral components for providing smaller
and lighter units
• Integration of components and easy treatment for maintenance-free
operation
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