CONTROLLER FOR SYSTEM INTERCONNECTION INVERTER

Japanese Patent JP3164678

B2

PURPOSE: To provide a controller for allowing independent power supply from an inverter to a load when interconnection with an AC system is interrupted.
CONSTITUTION: The controller for system interconnection inverter comprises a current control circuit 105 for equalizing a detection signal from 80 active/ reactive power detector 104 to active and reactive current reference signals thus producing an inverter output voltage reference signal, a gate control circuit 106 for controlling the inverter output voltage based on the inverter output reference signal and a phase signal, a frequency detector 107, a voltage amplitude detector 108, and a circuit 131 for operating a frequency correction signal based on the difference between a frequency reference signal and a frequency signal. The controller further comprises a circuit 132 for operating a voltage amplitude correction signal based on the difference between a voltage amplitude reference signal and a voltage amplitude signal, and an adder circuit 110 for adding the active current reference signal to the voltage amplitude correction signal to produce an active current correction reference signal being fed to the current control circuit 105 while furthermore adding the reactive current reference signal to the frequency correction signal to produce a reactive current correction reference signal. being fed to the circuit 105.

Akio Sato
Minoru Abe
Oyama
Shunichi Hirose
Tatsuro Yamaguchi
Susumu Tanaka

JP331593A

May 08, 2001

January 12, 1993

Click for automatic bibliography generation  

THE TOKYO ELECTRIC POWER COMPANY,INCORPORATED
Toshiba Corporation

H02J3/38; H02J9/06; H02M7/493; (IPC1-7): H02J9/06; H02J3/38; H02M7/48

JP3196207A
JP61164433A
JP479728A
JP327730A
JP59153426A

Takehiko Suzue

Previous Patent: 設備用基礎構造体

Next Patent: COLD HEAT ACCUMULATIVE REFRIGERATOR