A digital power converter arrangement of an electric vehicle, including:
- at least one external battery;
- at least one external motor;
- and
- a digital power converter which includes:
- a signal switching IC (Integrated Circuit);
- and
- a CPU (Central Processor Unit) circuit, configured to execute and perform analog and digital conversion, pulse-width modulation (PWM) and communication, including a CPU outputting one or more PWM signals by changing a time ratio of a turn-on/turn-off of square wave pulse width modulation signals;
- an AC (Alternate Current) rectifier circuit configured to input AC power supply, wherein the CPU outputs the PWM signals through the signal switching IC to switch to the voltage boost circuit to raise an AC rectifier voltage to reach an external battery voltage potential of each of the at least one external battery;
- a voltage boost circuit which utilizes software to change IO output states of the PWM signals;
- a high voltage filter circuit configured to detect voltage and current data of one or more input terminals of the AC rectifier circuit;
- a three-phase inverter circuit configured to expand power conversion into a three-phase AC output with three-phase motor driving capability to provide a three-phase power supply with the CPU as a control core to quantitatively analyze and process input and output information and make corresponding adjustments thereof;
- and
- a function selection circuit, including:
- a function selector switch configured to switch between an external battery charging function mode, an AC power supply output function mode, and an external motor driver function mode;
- and
- a motor selector switch configured to function a motor hall mode when the function selector switch is switched to the external motor driver function mode, wherein the CPU detects the function selector switch and motor selector switch to switch states to run corresponding functions;
- wherein when the function selector switch is switched to select the external battery charging function mode, the CPU operates in a charging mode, wherein an external AC power is supplied via the AC rectifier circuit and an external AC current thereof is rectified to obtain a DC voltage, wherein the DC voltage is raised by the voltage boost circuit and then feeds to the high voltage filter circuit to filter out any pulsating voltage for charging the at least one external battery;
- wherein when the function selector switch is switched to select the AC power supply function mode that is a power source switching mode, the at least one external battery inputs a DC power through the high voltage filter circuit and then switches into AC power supply through a three-phase driver to output, wherein the AC power supply raises a voltage thereof by the voltage boost circuit to supplement a power loss of the at least one external battery;
- wherein when the function selector switch is switched to select the external motor driver function mode, the high voltage filter circuit is connected with the at least one external battery to input DC power supply, wherein the CPU sets a driving voltage through an adjustable potentiometer and a rotating speed of the at least one external motor, and that AC power is rectified by the AC rectifier circuit to output steady direct current for an operation of the at least one external motor.