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Last Year 2022
In the 2022 Technion vehicle (ABBY) we used the Deutronic DVCH1503 DC/DC converter (12V model) which is designed for use in vehicles (https://drive.google.com/drive/folders/1rkoHQTEXycO-Gmotjo0fRKmc5dRGaKc3). This converter advantages are its wide range of input voltages (200 - 470 VDC), high efficiency, it is fulfilling the FSG galvanic isolation standard, and it have enough power to support the LVS operation.
Our vehicle inverter also have a 12Vdc output but it doesnt fulfill the FSG galvanic isolation standard and doesnt provide enought power
SRR
SRR
Definitions/Meaning
The vehicle's main power source is the accumulator which provides high voltage to the tractive system. The LVS requires a much lower voltage for its components to work properly (usually 12 or 24 Vdc) and therefore a low voltage power supply must be applied in the vehicle.
General Requirements
FSG rules demands that TS and LVS will be galvanically isolated according to the following standard (EV 1.2.1):
Galvanic Isolation – two electric circuits are defined as galvanically isolated if all of the following are true:
• the resistance between both circuits is _500 W=V, related to the maximum TS voltage of the vehicle, at a test voltage of maximum TS voltage or 250V, whichever is higher.
• the isolation voltage RMS, AC for 1 min, between both circuits is higher than three times the maximum TS voltage or 750 V, whichever is higher.
T11.1.5 [EV ONLY] The LVS must not use orange wiring or conduit.
T11.1.6 [EV ONLY] The LVS must be grounded to the chassis.
PDR
PDR
CDR
CDR
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