Electrical power supply system for transport refrigeration system

• Main Authors: WECKER RICHARD, VAN DER PLAS PETER
• Format: Patent
• Language: Chinese; English
• Published: 07.07.2023
• Subjects: ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING,OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODSSPACES OF VEHICLES; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; PERFORMING OPERATIONS; TRANSPORTING; VEHICLES IN GENERAL

An electrical power supply system 18 for an electric transport refrigeration unit 14 is disclosed. An electrical power supply system 18 for providing AC power to the refrigeration system and comprising: 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 into 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 connected to a DC link 32, wherein the DC link is provided between a high voltage line 24 and a low voltage line 22 of the DC power supply 16. The common mode current path 30 is thus coupled to the DC link 32 to provide a floating current connection for the common mode current from the EMC filter 28. 公开了一种用于电动运输制冷单元14的电功率供应系统18。电功率供应系统18用于向制冷系统提供AC功率，并且包括：用于经由低电压线路22和高电压线路24提供DC电压的DC电源16；用于接收DC电压并将其转换成三相AC电压以用于为制冷系统供电的逆变器26；