Control method for upper oil pump frequency converter DCAC of electric sanitation truck
A control method and frequency converter technology, applied in cleaning methods, road surface cleaning, construction, etc., can solve problems such as high failure rate, inability of the vehicle controller to obtain DCAC feedback information of the frequency converter, failure to diagnose DCAC faults of the frequency converter, etc., to achieve Improved stability and scalability, improved reliability and maintainability, and convenient and quick fault diagnosis
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[0027] According to an embodiment of the present invention, a DCAC control method for an oil pump frequency converter mounted on an electric sanitation vehicle, when the vehicle is in a normal state, according to the high and low voltage power-on conditions of the vehicle control system, the oil pump frequency converter DCAC feedback state is installed, and the installation is performed according to the following steps The oil pump inverter DCAC controls:
[0028] Step 1) The vehicle control system is powered on at low voltage, and the vehicle controller is initialized. After the initialization is completed, the vehicle controller sends a low-voltage relay pull-in command, and the low-voltage relay is hard-wired to the oil pump inverter controller. powered by;
[0029] Step 2) The vehicle controller receives vehicle signals through the hardware interface or vehicle CAN network, such as: oil pump motor work request signal, accelerator pedal signal, brake signal, gear signal, emergen...
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