Master-Slave Control Scheme in Electric Vehicle Smart Charging Infrastructure

Table 1

Waiting time of command sets.

Comd.	Description and waiting time
atrs	Auto-reset the charging station
	𝑇Waiting>0.5𝑇3G+𝑇GatewayStartUp
duty	Change the duty cycle of pilot signal
	𝑇Waiting>1000+400×𝐼final−0.5×𝑇3G,𝐼init=0110−0.5×𝑇3G,𝐼final=0310−0.5×𝑇3G,𝐼init<𝐼final5060−0.5×𝑇3G,𝐼init>𝐼final
enab	Enable EV charging
	𝑇Waiting>𝑇3G+𝑇EnableChargingProcess+𝑇EVResp
rely	Turn on/off relay manually
	𝑇Waiting>𝑇3G
rest	Disable EV charging
	𝑇Waiting>𝑇3G
resp	ZigBee handshake response
	𝑇Waiting=0
rgst	Return all registered ZigBee MAC address
	𝑇Waiting>𝑇3G+𝑇GatewayUSBTimeout
stat	Charging station status request
	𝑇Waiting>𝑇3G+𝑇GatewayUSBTimeout
test	ZigBee handshake request
	𝑇Waiting=0