| 摘要 |
PROBLEM TO BE SOLVED: To provide an inverter controller, which controls a resonant soft- switching inverter circuit having reduced inductance for resonance, according to its principle of operation. SOLUTION: When a rotational angle θ of a motor exists, for example, in the area 1 of a space vector, a control CPU 5 outputs an output voltage vector V1 at the time t00 for an interval (T1); and next at a time t01, it transits to an output voltage vector V4 and outputs the vector for a time (T3/4), and at the time t02, it transits to an output voltage vector V3 and outputs the vector for a time (T2+T3/2). After outputting the output voltage vector V3, it retransits to an output voltage vector V4 at a time t03 and outputs the vector for an interval (T3/4), and then it repeats the output, in order of output voltage vectors V1, V4, V3, and V4. Since the zero vector is a value obtained by subtracting the output time of the output voltage vector from the output time of the output voltage vector V3, it follows that T2+T3/2-(T3/4+T3/4)=T2. |
