Test solutions to improve the quality of electric vehicle wireless devices

Wireless charging for electric vehicles has become the most important charging method for electric vehicles due to its high convenience and operational efficiency. Programmable AC power supplies help improve the quality of wireless charging equipment for electric vehicles and prevent charging safety accidents from causing damage to users.

With the development of 5G communication and Internet of Vehicles, electric vehicles are gradually upgraded to smart electric vehicles that integrate automatic driving, parking and charging. The current wired charging method for electric vehicles is too cumbersome and cannot meet the application needs of automatic charging of smart electric vehicles, which provides an excellent opportunity for the wireless development of electric vehicles. Compared with wired charging, wireless charging of electric vehicles has unique advantages - ultra-high charging convenience, low unattended post-maintenance cost, small footprint and high space utilization, etc. It can even solve the current range anxiety of electric vehicles.

High-power wireless charging equipment for electric vehicles often adopts magnetic field resonance. After handshaking with the electric vehicle, it transmits energy to the energy device received by the smart electric vehicle through the electromagnetic field, and charges the battery to realize the energy replenishment of the electric vehicle. After the replenishment is completed, the charging is automatically disconnected. The power of electric vehicle wireless charging equipment is usually 3~22kW, the input AC voltage is 180~270VAC, and the output voltage range is 200~900V DC. In the research and development, certification and production links, programmable AC power supply is required to provide normal or abnormal power supply for strict testing and verification of electric vehicle wireless equipment.

Electric vehicle wireless charging equipment requirements for programmable AC power supply:

1. Output wide range voltage and frequency adjustment, and precise voltage and frequency output;

2. It has the function of simulating grid fluctuations (such as List programming function), which can realize the simultaneous change of voltage and frequency;

3. With three-phase unbalance and harmonic synthesis functions;

Test topology diagram of electric vehicle wireless charging equipment

Test items and equipment for electric vehicle wireless charging equipment

The PSA6000 series high-performance programmable AC power supply is a power grid simulation output device with high precision and wide output range. It has an output power of 2~21kVA and an output frequency of more than 5000Hz. It supports self-correction output to significantly improve output accuracy. It integrates a wealth of cutting-edge application solutions and provides a variety of normal or abnormal power supply conditions for electronic product performance testing and quality verification. It is equipped with complete protection functions (OVP/OCP/OPP/OTP, etc.), which can easily cope with complex testing challenges in R&D, certification, production inspection and other stages. It is suitable for consumer electronics, information and communication technology, new energy and avionics.