With the continuous development of science and technology, wireless power transmission technology has become the focus of attention. Wireless power transmission technology is a technology that wirelessly transmits energy to long distances, and realizes the transmission and collection of energy through the propagation of electromagnetic waves. It has the advantages of high efficiency, environmental protection, and reliability, and has broad application prospects in many fields, such as electric vehicle charging, wireless charging equipment, Internet of Things equipment, remote controls and sensors, solar power generation, etc.
The principle of wireless power transmission technology is based on the propagation of electromagnetic waves and the conversion of energy. A changing current is generated through the sending end, electromagnetic waves are generated, and electrical energy is converted into electromagnetic energy. The receiving end receives electromagnetic waves and converts them into electrical energy. Among them, the power transmission efficiency in the transmission process is an important indicator, which needs to be optimized by means of appropriate frequency, power control, attenuation and noise reduction. At this time, an external drive power supply is needed to provide more powerful power for the system. The ATA-3090B power amplifier has a good application in the field of wireless power transfer testing. driver support.
This time, Aigtek sorted out the past customer cases, and selected the more classic cases of the application of ATA-3090 power amplifiers in the field of dielectric research to share with you, hoping to be helpful to engineers and researchers in the field.
Case 1: Quasi-constant mutual inductance calculation and optimization application of new coil structure of ATA-3090 power amplifier in wireless power transmission system
The experiment used ATA-3090 power amplifier, arbitrary waveform function generator, digital power analyzer, oscilloscope, three-dimensional mobile platform, transmitting coil, transmitting end compensation capacitor, receiving coil, receiving end compensation capacitor and non-inductive load resistance and other testing equipment .
Experiment summary:
Build the MCR-WPT system prototype and wireless power transfer test platform. Starting from the optimization design of the coil body structure, based on the quasi-constant mutual inductance calculation and optimization method, a new coil structure with high offset tolerance in the horizontal direction is designed. In the case of additionally adding any resonance compensation network and auxiliary control device, the anti-offset ability of the system in the horizontal direction can be greatly improved.
Case 2: Application of ATA-3090 Power Amplifier in Detection of Foreign Objects in Wireless Power Transmission
This experiment uses test equipment such as inverter, resonant circuit, Tx coil, signal generator, ATA-3090 power amplifier, speaker, circuit breaker, etc.
Experiment summary:
In a complete magnetic resonance wireless power transmission system, the DC excitation is converted into a standard sinusoidal excitation by the inverter and the resonant circuit and then applied to the Tx coil. The method of directly applying the sinusoidal excitation to the Tx coil is used to simulate the actual situation.
experiment procedure:
In the construction of the experimental system, the sinusoidal excitation required by the Tx coil is jointly generated by the signal generator and the power amplifier; the feasibility verification of the flat gradiometer detection is first tested the feasibility of the flat gradiometer to detect metal foreign objects. In the experiment, a sinusoidal excitation current is applied to the Tx coil, the excitation frequency is 100kHz, and the amplitude is 1.2A; finally, the feasibility of vertical gradiometer detection is verified.
Case 3: Application of ATA-3090 Power Amplifier in Research on Impedance Matching of Electric Vehicle Dynamic Wireless Power Transmission
The experiment used signal generator, ATA-3090 power amplifier, transmitting coil, receiving coil, rectifier bridge, DC/DC and load resistor, oscilloscope, LCR impedance analyzer, Tektronix differential voltage probe, current probe and other testing equipment.
Experiment summary:
Aiming at the system mismatch problem in the dynamic wireless charging process of electric vehicles, the analysis of the causes of mismatch and the restoration of matching conditions are focused on, and an impedance matching network with adaptive adjustment capability is embedded in the secondary circuit, so that electric vehicles can Perform adaptive impedance matching adjustment to stabilize transmission efficiency under changing working conditions. After rectification and high-frequency inverter, the electric energy of the grid generates a high-frequency magnetic field through the transmitting coil. When the receiving coil is in a magnetic field environment, an induced current will be generated, and the electric energy of the grid will be transferred from the primary side to the secondary side. The energy picked up by the secondary side Passed to the load after being regulated by the rectifier and DC/DC.
The specific parameters of the ATA-3090 power amplifier that appeared in this wireless power transfer case sharing are as follows:
Bandwidth: (-3dB) DC~100kHz
Voltage: 90Vp-p (±45Vp)
Current: 18Ap
Power: 810Wp
Slew rate: ≥20V/μs
In addition to the field of wireless power transmission, the power amplifier ATA-3090 is widely used in many fields such as electromagnetic coils, nanomaterial preparation, underwater imaging, etc. We will share specific cases with you in future articles.
In addition, it also has the following features and advantages:
Single channel output, output voltage gain x0~30 (0.1step/1step), maximum output power 810Wp
The digital control gain is adjustable, and the adjustment knob can be set in two ways: coarse adjustment (1step) and fine adjustment (0.1step)
LCD panel display, easy to operate
With output switch, the control is more flexible
Equipped with a fan for effective cooling
The output has overcurrent protection
ATA-3090 power amplifier parameter index
ATA-3090 Power Amplifier Amplitude-Frequency Characteristic Diagram
ATA-3090 Power Amplifier Small Signal Amplitude-Frequency Characteristics Diagram
This information is organized and published by Aigtek. For more cases and product details, please continue to pay attention to us. https://www.aigtek.com/