With the development of China’s modernization, the traditional energy reserve is seriously inadequate, and the crude oil and other resources that China currently needs are heavily dependent on imports. The development of new energy is an important development requirement of our country. New energy vehicles are an important exploration task in the field of new energy in China in recent years. In the construction of power system, new energy vehicles do not need to rely on traditional energy as power, but adopt the combination of motor and controller, so that new energy vehicles can achieve the functions of traditional vehicles. In this paper, the test method of electromagnetic compatibility between motor and controller in the use of new energy vehicles is discussed. From the point of view of the current energy market in China, the development and utilization of new energy is our long-term strategy at the current national development level. In recent years, the development of new energy vehicles in China has made remarkable progress. New energy vehicles relying on electricity as energy have been preliminarily applied in China, but their motors and controllers There is still a lack of strict specifications for electromagnetic testability. The driving force of the new energy vehicle mainly depends on the electric drive. The power source of the new energy vehicle is the motor installed inside the vehicle.
The motor drive will produce large electromagnetic noise in the process of working. For the new energy motor and its controller, we need to carry out strict electromagnetic compatibility test. In the use of our new energy vehicles, our power system as a driving system has a very big defect. The power system will generate a large current in the start-up and operation process. In our motors, such current constantly beats, resulting in the semiconductor tube and transistor internal electricity of the whole power system. The current is very unstable, and the motor of our new energy vehicle has bigger performance and stronger current than our general motor. This fast-jumping current frequency will cause huge radiation in the space, thermostatic element and will produce certain electromagnetic interference to the surrounding electronic devices.
In the process of our use, it will affect the electronic equipment. It has great consumability. With the development of our new energy vehicles, the intrinsic electromagnetic interference of this electric drive system must be strictly controlled, while the electromagnetic interference of our industrial control motors is usually tested for electromagnetic compatibility. Our traditional EMC test of power system for new energy vehicles is relatively lax. Ge, in order to fully guarantee the performance of our electric energy vehicles, it is necessary for us to design a complete set of electronic compatibility test methods for electric new energy vehicles. In order to ensure that our new energy vehicles can achieve better development in the future, we should focus on the motor and controller of our current new energy vehicles.
Through in-depth analysis, a set of EMC testing methods for motor and controller in line with new energy vehicles is established, so as to ensure that our new energy vehicles can achieve better development in the future. Harassment capability refers to the ability of our new energy vehicles to protect people or environmental obstacles around the road during operation. In our existing vehicle harassment capability test, there is a clear test method for the harassment test. In the specific operation process, we analyze the actual harassment capability of the car by letting the car test the receiving frequency of the radio within 10 meters of the car in the free operation process. In the current national standard, the main regulation is the test method of the disturbance ability of the internal combustion motor vehicle. The test method of the disturbance ability of the electric vehicle does not clearly indicate whether it can be applied. In the latest revision of the national standard, the test of the electric and internal combustion motor hybrid electric vehicle is added to the disturbance test. Content, but there is still no test method for the harassment capability of individual electric vehicles. In the process of our harassment ability test, the biggest problem we encounter is that the reason and size of the electric interference between our motor-powered vehicle and the internal combustion engine-powered vehicle are different. In the process of the harassment ability test of the internal combustion engine-powered vehicle, our test method is based on the measurement of km/h, while the motor-powered vehicle is based on the measurement of km/h. In the process of testing, it is necessary to use r/min as the unit for testing. If we only apply the standard of internal combustion engine vehicle, it is theoretically feasible to change km/h into r/min.
However, in the specific testing process, there is inherent difference between motor-powered vehicle driving system and internal combustion engine-powered vehicle driving system. Different, this difference will still cause our harassment ability test can not meet the requirements. In the process of EMC test for motor and controller of new energy vehicle, we also need to test its anti-interference ability to ensure that our car can run safely and smoothly. In fact, electromagnetic interference exists everywhere in our life. During the operation of our new energy vehicles, it also emerges in an environment full of electromagnetic waves. Electric power vehicles are driven entirely by the power system, so they should be more sensitive to electromagnetic interference.
In our national standard automobile detection method, there is a clear stipulation for the automobile operation test method: during the operation of the motor vehicle, the whole motor vehicle is placed in the environment of 20-1000MHz, and the operation status of all electronic equipment is analyzed, so as to complete the anti-interference ability test. During the operation of our new energy vehicle, the power system part is the same as the environment of the internal combustion engine vehicle, so we can use the anti-interference ability test method of the internal combustion engine to complete the electromagnetic compatibility test of the electric vehicle. In order to test the electromagnetic compatibility of motor and controller for new energy vehicles, we must first establish compatibility test standards, so as to judge whether the motor and controller of our new energy vehicles really meet the requirements of compatibility test. For our new energy vehicle compatibility test standards, we need to be based on the actual test work and internal combustion engine vehicle test standards as a reference. For the harassment capability test, we are mainly concerned about the influence of the electromagnetic interference emitted by the new energy vehicle itself on the surrounding environment.
We can refer to GB/T 18655-2002 internal combustion engine harassment capability test standard, modify the standard in the test process, so that our new energy vehicle will have a bad feeling after passing the electromagnetic compatibility test. The disturbance ability can be equal to that of the same standard internal combustion engine vehicle, thus completing our disturbance ability test. Another EMC test that we need to focus on is the anti-jamming ability. The anti-jamming ability is related to the safe running state of our new energy vehicles. In the process of anti-jamming test, the first thing we need to determine is the intensity of our interference.
Because the running environment of electric vehicles is basically the same as that of internal combustion engine vehicles. We can use the anti-interference radiation intensity of our internal combustion engine vehicle to analyze the anti-interference intensity of our electric vehicle and ensure the safe and stable operation of our new energy vehicle. In the process of power system compatibility test, we should start from two aspects to ensure the perfect completion of our power system electromagnetic compatibility test. On the one hand, we need to make clear our test object. Because the whole power system of our new energy vehicle is based on the motor as the core and the controller as the control device, and both of them will produce greater electronic interference in the operation process, so our test object is the electric drive system of the whole new energy vehicle. In the process of actual testing, the electric drive system as a whole, we should test it as a whole as possible, so as to ensure that the whole system can pass the electromagnetic compatibility test. When we carry out EMC, on the other hand, we need to load the power drive system reasonably to assist in the test.
In the process of compatibility test of our power system, we often need to judge the anti-interference upper limit of the system, and load properly, so that we can analyze our motor and controller in the test. The specific anti-interference ability can have a clear indication range when overloading in the actual operation process. New energy vehicle is the inevitable development trend in our country under the current situation, and electric energy vehicle has the advantages of high efficiency and green, which has been attached great importance. But in the actual process of electric vehicle, the electromagnetic interference produced by its motor and controller may affect the stability of the vehicle, so we must carry out electromagnetic compatibility. Test. In the EMC test of new energy vehicles, we can refer to the test standard of internal combustion engine to formulate the test standard of new energy, so as to achieve the safe and stable operation of our new energy vehicles.