얼터네이터 교환 수리 사례

2026. 8. 1. 작업

난이도 & 준비물

증상

Car alternators are 3 phase DC excited synchronous electric machines. They can be used as a motor by a proper 3 phase motor driver. Let's think that we connected a 200Ah Lithium based (eg. LiFePO4) reservoir battery parallel to car's default 12V battery by a step down converter. As we are driving, step down converter is turned off, so our reservoir battery is disabled. When we need to apply brake, we simply press the brake pedal which now has a pressure sensor on it, seamlessly controls the step-down converter's output current (which is roughly equal to the output power, thereby the braking po

처리 내용

What you describe, in somewhat inaccurate general terms is something that is in place today in hybrid vehicle designs. The specifics you've presented have multiple technical problems, especially the aspect of using the vehicle's existing 12v battery. The mechanical components of at least one hybrid vehicle uses a motor-generator component to perform the power assist, drawing power from a dedicated traction battery, while serving as a generator for slowing the vehicle and returning power to the battery as applicable. This is accomplished through computer monitoring and control of the systems and would not necessarily be easily accomplished at a DIY level. From a power-required reference, conventional alternators are not going to produce the necessary power, nor would something of that size serve as a suitable motor for an assist. On production electric vehicles, regenerative braking is now common. One lifts the foot on the 'go-pedal' and the system converts kinetic energy to electrical