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What is the primary power source that supplies power to the locomotive’s air-conditioning system?

Category:

Technical Support

Author:

Wuhan Runtong Maida High-tech Products Co., Ltd.

Source:

Wuhan Runtong Maida High-tech Products Co., Ltd.

Release date:

2022-05-01

Visits:

1201

Domestically produced DC‑drive locomotives are broadly classified into two main categories: diesel locomotives (the Dongfeng series) and electric locomotives (the Shaoshan series). In diesel locomotives, the air conditioner’s operating power supply—referred to as the “base power”—is provided by the locomotive’s auxiliary generator (commonly called the “auxiliary generator”). This 110 V DC source, with a tolerance of +20% to −30%, is routed to the dedicated air‑conditioning power supply, which in turn powers the compressor and the indoor and outdoor fans. For electric locomotives, the air conditioner’s operating power—also known as the base power—is drawn from the overhead catenary via the pantograph, converted by a phase‑splitting device, and then delivered to the dedicated air‑conditioning power supply. This dedicated supply subsequently provides power to the compressor and the indoor and outdoor fans. The system control power is uniformly 110 V DC, supplied by the locomotive’s battery pack. In domestically produced AC‑drive locomotives—specifically the Harmony‑type high‑power models—the air conditioner’s operating power is directly supplied by the locomotive’s auxiliary converter.

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Why install air conditioning on locomotives?

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What were the main problems with the air-conditioning systems of DC electric locomotives in the past?

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What is the primary power source that supplies power to the locomotive’s air-conditioning system?

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