Timeline for What makes automotive alternators so inefficient relative to other applications?
Current License: CC BY-SA 3.0
7 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Mar 15, 2023 at 15:51 | history | made wiki | Post Made Community Wiki by Voltage Spike♦ | ||
| Oct 21, 2017 at 21:46 | comment | added | alfor | I forgot a point: that graph is at maximum power for a given RPM. I think that's why the efficiency is so low and the resistive loss is high. In case of lower current the efficiency is going to be better as the resistive loss are RI2. | |
| Jul 18, 2016 at 16:14 | comment | added | Diego C Nascimento | I think it's more a tradeoff (of the I2R losses) between cost and efficiency. But, what you say to be the voltage (electric potential), is not directly the question, it's the current in the case of I2R losses. And big generators work at even bigger currents and are far better efficient. Anyway today alternators tend to be more efficient as the automotive market uses more electrical devices. | |
| Jul 18, 2016 at 3:26 | comment | added | user2943160 | Welcome to EE.SE! Unfortunately, your answer doesn't seem very realistic. To address the middle two points: the windings are designed for the currents and the connections are much lower resistance than 0.1ohm, when bolted down correctly. | |
| Jul 18, 2016 at 3:12 | review | Late answers | |||
| Jul 18, 2016 at 3:27 | |||||
| Jul 18, 2016 at 2:54 | review | First posts | |||
| Jul 18, 2016 at 4:31 | |||||
| Jul 18, 2016 at 2:49 | history | answered | alfor | CC BY-SA 3.0 |