At the 2012 Northern China International Lithium Electric Vehicle and Supporting Exhibition Conference held in Tianjin recently, the smart sensor technology exhibited by Sichuan Kuanhe Technology Co., Ltd. received widespread attention. Many industry insiders believe that intelligent sensing technology is an effective way to solve the current bottleneck in the development of lithium electric vehicles. "Electric bicycles are used as leisure tools abroad, while Chinese users are used as real vehicles, and they even have to bear heavy loads. The utilization rate is extremely high." Chengdu Kuan and related officials told reporters that in the Chinese market, the sensor's Reliability and intelligence are more practical. According to China's national standard for electric bicycles, the weight of electric bicycles should not exceed 40 kg, but this standard faces the problem of "difficult implementation" in the industry. According to analysis, the weight loss of the whole vehicle mainly depends on reducing the battery capacity, but this will lead to insufficient endurance of the whole vehicle. If a lighter and more environmentally friendly lithium battery is used, although the weight of the vehicle can reach the national standard, the existing electric bicycles generally use the handlebar control discharge method, which will greatly reduce the life and actual use capacity of the lithium battery. In this context, smart sensor technology has become the key to industry research and competition. It is understood that Chengdu Kuanhe has spent 5 years collecting a lot of data on the riding comfort and system power saving effect of electric bicycle riders under different road conditions, so as to establish a mathematical model, use professional chips for intelligent processing, and develop intelligent hybrid power. Sensor system. It can perform intelligent digital processing by collecting physical quantities such as the real-time speed and instantaneous acceleration of the foot pedal, detecting the road surface gradient and road surface resistance during dynamic operation, and generating a pre-judgment result, and then the motor outputs appropriate power. This technology improves rider comfort, reduces motor wear, and also greatly improves the range and service life of lithium batteries. On-Grid Inverter converts DC power to AC power for feeding back to the grid. The frequency of the output voltage of the grid-connected inverter needs to be the same as the grid frequency (50 or 60Hz), which is generally achieved by the oscillator in the machine, and the output voltage will also be limited not to exceed the grid voltage. Modern high-quality grid-connected inverters can have an output power factor of 1, which means that the output voltage and current phases are the same, and the phase difference between them and the grid voltage is within 1 degree. There is a microprocessor in the inverter that can sense the AC waveform of the grid, and according to this waveform, generate voltage and send it back to the grid. However, the electricity sent back to the grid needs to have a certain proportion of reactive power, so that the power of the nearby grid is within the allowable limit. noon) its voltage may rise too high. on grid solar inverter, micro inverter on grid, 25 kw on grid inverter, on grid power inverter, 15kw on grid inverter Ningbo Autrends International Trade Co., Ltd. , https://www.aitsolarpanels.com
If the power of the grid is cut off, the grid-connected inverter needs to be disconnected from the grid quickly. This is a regulation of the National Electrical Code (NEC) in the United States to ensure that when the grid is out of power, the grid-connected inverter will not provide power to the grid, and at this time the workers who maintain the grid will not be electrocuted.
Properly configured, grid-tie inverters allow a home to use alternative energy sources that it generates itself (such as solar or wind power) without cumbersome wiring and without the need for batteries. If there is insufficient alternative energy, the insufficient part will still be provided by electricity from the grid.
Grid-connected inverters are widely used in household photovoltaic power generation systems, commercial and industrial photovoltaic power plants and other scenarios. By connecting to the grid, they help to achieve efficient use of renewable energy and reduce carbon emissions, promoting sustainable development and popularization of clean energy.