Abstract: A phase and an amplitude improving method includes performing a model establishing step, a phase compensating step, an amplitude compensating step and a compensation information generating step. The model establishing step includes establishing an inverter model. A voltage command is inputted to the inverter model to generate an actual voltage information. The voltage command includes a phase command information and an amplitude command information. The phase compensating step includes computing the phase command information and the actual voltage information to generate a compensating phase information. The amplitude compensating step includes computing the amplitude command information and the actual voltage information to generate a compensating amplitude information. The compensation information generating step includes generating a compensating voltage command. The compensating voltage command is inputted to the inverter model to generate a compensating actual voltage information.

Abstract: A phase and an amplitude improving method includes performing a model establishing step, a phase compensating step, an amplitude compensating step and a compensation information generating step. The model establishing step includes establishing an inverter model. A voltage command is inputted to the inverter model to generate an actual voltage information. The voltage command includes a phase command information and an amplitude command information. The phase compensating step includes computing the phase command information and the actual voltage information to generate a compensating phase information. The amplitude compensating step includes computing the amplitude command information and the actual voltage information to generate a compensating amplitude information. The compensation information generating step includes generating a compensating voltage command. The compensating voltage command is inputted to the inverter model to generate a compensating actual voltage information.

Abstract: A switching power supply and a power supply apparatus that incorporates the switching power supply are provided. Advantages of the switching power supply include the following: 1. Two or more switching power supplies can be used in parallel when they have the same kind of input power and the same rated output power. 2. Two or more switching power supplies can be used in parallel when they have the same rated output power but different kinds of input power. 3. Two or more switching power supplies can be used in parallel when they have the same kind of input power but different rated output powers. 4. Two or more switching power supplies can be used in parallel when they have different kinds of input power and different rated output power. 5. When the above-described switching power supplies are connected in parallel, the respective load proportion of each of them can be adjusted at will.

Abstract: A switching power supply and a power supply apparatus that incorporates the switching power supply are provided. Advantages of the switching power supply include the following: 1. Two or more switching power supplies can be used in parallel when they have the same kind of input power and the same rated output power. 2. Two or more switching power supplies can be used in parallel when they have the same rated output power but different kinds of input power. 3. Two or more switching power supplies can be used in parallel when they have the same kind of input power but different rated output powers. 4. Two or more switching power supplies can be used in parallel when they have different kinds of input power and different rated output power. 5. When the above-described switching power supplies are connected in parallel, the respective load proportion of each of them can be adjusted at will.