Accessible, reliable, and affordable electricity is a prerequisite for adequate charging infrastructure provision. For a rapidly scalable EV charging network, the ubiquitous low-tension (LT) electricity distribution infrastructure should be leveraged wherever feasible to provide electricity connections for EV charging. A distributed approach to charging infrastructure, comprising primarily of normal-power charging points, ensures that most charging points can be connected to the LT electricity network. This chapter explores the regulatory and governance provisions that impact EV charging connections, and lays out three methods for arranging electricity supply to private or public charging facilities.
EVSEs have different power ratings or levels based on charging requirements, which in turn determine the input power requirements for charging infrastructure. Table 2 categorizes EV charging by power level, with normal power charging going up to 22kW and highpower charging going up to 200kW. While EVSEs with power ratings up to 500kW are globally available, they are largely applicable for heavy vehicles like buses and trucks.
Normal power AC charging is adequate for e-2Ws, e-3Ws and e-cars. Normal power DC charging is unique to India, due to the prevalence of LEVs, and the use of low-voltage batteries in e-cars. Single-phase AC chargers, with a maximum power rating of 7kW, are adequate for LEVs and cars with single phase on-board chargers. Three-phase AC chargers, with a power rating up to 22kW, are required for e-cars with larger onboard chargers.
Input power supply for normal power charging can be provided from the standard electricity distribution network.
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