A charging frequency between a transmitting coil (106) and a receiving coil (105) of a wireless power transfer (WPT) system is found by setting an input voltage to the transmitting coil at a fixed voltage, shunting to the receiving coil, determining a first input current frequency range in which a resonant frequency is expected to be found, and determining a second input current frequency range in which the resonant frequency is expected to be found. Frequency polling is performed within the first input current frequency range using a set of polling frequencies in the first input current frequency range, and the polling frequency having the lowest input current is selected as the charging frequency. The first input current frequency range may be found by setting the first input current frequency range based on a specification, an international electromagnetic frequency allocation, or a previous experience about a WPT between the transmit coil and the receive coil. A frequency range around the input current minimum is selected to poll a charging frequency that approximates the resonant frequency.
无线电力传输(WPT)系统的发射线圈(106)与接收线圈(105)之间的充电频率是通过以下来找到的:将到发射线圈的输入电压设置在固定电压处,分流至接收线圈,确定预期将在其中找到谐振频率的第一输入电流频率范围,使用第一输入电流频率范围中的轮询频率集合在第一输入电流频率范围内进行频率轮询,以及选择具有最低输入电流的轮询频率作为充电频率。第一输入电流频率范围可以通过基于规定、国际电磁频率分配或关于发射线圈与接收线圈之间的WPT的先前经验来设置第一输入电流频率范围而找到。选择输入电流最小值周围的频率范围来对近似谐振频率的充电频率进行轮询。
Charging frequency determination for wireless power transfer
无线电力传输的充电频率确定
2024-07-19
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung / H04B TRANSMISSION , Übertragung |
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