CONTROL DEVICE AND POWER CONVERSION DEVICE

A control device (10) includes a power generator simulation unit (101) to generate a voltage command value for a power converter (20), and a signal generation unit (103) to generate a control signal for the power converter based on the voltage command value. The power generator simulation unit (101) includes a first integrator (212) to time-integrate a first difference between effective power calculated based on an AC voltage and an AC current and a target value of the effective power and output a first angular frequency, a second integrator (304) to time-integrate the first angular frequency and output a phase of the AC voltage, and a voltage command generation unit (15) to generate the voltage command value based on the AC voltage, a target value of the AC voltage, and the phase outputted from the second integrator (304). When a voltage difference between the AC voltage and the target value of the AC voltage is greater than a threshold, or when the AC current is greater than a reference current value, the first integrator (212) outputs a difference between an angular frequency of the AC voltage and a reference angle frequency as the first angular frequency.