Archive for January 4th, 2012
The power supply disorder for car is noted
With the increasing cars on the road, the supply for the car has become important problem. In the car, more and more users want to equip with many electronic devices such as Tablet, phone to enjoy the life in the car. So, the use of car adapter is necessary. With this, the power can be transferred when charging. Here we can see some theories about the supply.
The first is the one-way power disorder supply. VOG (Vehicles Plug-in without Logic / Control) refers to the electric car as ordinary electrical equipment. Using one-way converter mature technology, it is ready to get access to the grid pattern of charging immediately. VOG is currently the most common electric vehicle charging, such as golf carts, airport shuttle buses and other special electric cars, as well as a number of new domestic and international public charging facilities. If in Beijing Olympics, electric vehicle charging stations are using this charging method.
VOG currently the biggest problem is the electric car charging as high-power, electricity load without the use of restraint, that the operation of charging VOG increases the difficulty of peaking power. So, car adapter can to some extent solve the problem. Then another method is one-way ordered energy supply. TC (Timed Charging) model, namely the time control mode is a single-phase power supply of the ordered charge mode.
Using this model of electric car charging in a given period of time, the cars start by controlling the charging time, charging to achieve peak load shifting. The peak load periods are to avoid charging in power, while power users can also enjoy the preferential Valley. However, due to various reasons, the time control mode can not be based solely on the state the flexibility to control the peak power charging process.
This model or one-way charging converter technology does not require real-time communication with the grid. The current technology and equipment has matured. The use of car adapter has run into the demonstration phase. V1G (Vehicles Plug-in with Logic / Control Regulated Charge) order is a single-phase power supply charging mode. Using this model, electric car grid in real-time communication is charging by the grid control in the grid to allow time for charging. And the charging arrangements are increased by optimizing the power efficiency.
The U.S. Pacific Northwest National Laboratory (PNNL) released called “Smart Charger Controller” electric vehicle charging control device. Equipped with short-range wireless communication module, it can receive the electricity from the power companies to set prices and other information, and smart grid technologies and auto-peak hours to avoid the charge. The device is of ZigBee / IEEE 802. The standard has been submitted to IEC to apply as an international standard. As the U.S. smart grid has 1.0 the first release of the standard.