Mitsubishi FREQROL-E700, Руководство пользователя

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1-8
1.3 Changing frequency
1.3.1 Structure of the inverter
The inverter is generally comprised of 3 sections: converter section, inverter section, and control circuit.
◎ Converter section
The converter section converts an AC of an AC power supply into a DC, and then smooths out the pulses of
current by the smoothing capacitor.
◎ Inverter section
The inverter section converts the DC converted by the converter section into a pulsed current of
alternating current having variable frequency.
* Pulsed current refers to current that flows intermittently for short periods of time.
◎ Control circuit
The control circuit controls the converter and inverter sections.
Inverter
section
Smoothing
capacitor
Converter
section
Control circuit
Main circuit
Inverter
AC power supply
Standard
motor
IM
AC DC
Variable voltage
Variable frequency