Parallel processing inverter system |
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| Authors: | Kawabata T Sashida N Yamamoto Y Ogasawara K Yamasaki Y |
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| Affiliation: | Mitsubishi Electr. Corp., Kobe; |
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| Abstract: | A novel method of instantaneous voltage and power balance control of a parallel processing inverter system is proposed. It consists of a high-speed switching PWM (pulsewidth modulated) inverter with an instantaneous current minor loop controller, a voltage major loop controller, and a power balance controller. This system realizes the following functions with only one inverter: constant AC output voltage control with reactive power control, active filtering to absorb load current harmonics, DC voltage and current control as AC-to-DC converter, and uninterruptible power supply (UPS) for stand-alone operation. This system covers a wide application range, including UPS systems, new energy systems, and active filters with voltage control functions |
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