An electrical power supply system 18 for an electric transport refrigeration unit 14 is disclosed. The electrical power supply system 18 is for providing AC power to a refrigeration system and comprises: a DC power source 16 for providing a DC voltage via a low voltage line 22 and a high voltage line 24; an inverter 26 for receiving the DC voltage and converting it to a three phase AC voltage for powering the refrigeration system; and an electromagnetic compatibility, EMC, filter 28 between the inverter 26 and the refrigeration system. The EMC filter 28 uses a common mode current path 30 that connects to a DC link 32, where the DC link is provided between the high voltage line 24 and the low voltage line 22 of the DC power source 16. The common mode current path 30 is hence coupled to the DC link 32 in order to provide a floating current connection for common mode current from the EMC filter 28.
ELECTRICAL POWER SUPPLY SYSTEM FOR TRANSPORT REFRIGERATION SYSTEM
STROMVERSORGUNGSSYSTEM FÜR EIN TRANSPORTKÜHLSYSTEM
SYSTÈME D'ALIMENTATION ÉLECTRIQUE POUR SYSTÈME DE RÉFRIGÉRATION DE TRANSPORT
2023-07-12
Patent
Elektronische Ressource
Englisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
Electrical power supply system for transport refrigeration system
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Europäisches Patentamt | 2023
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