However, using a low voltage DC motor as a wind turbine generator is not always a good idea for the following reasons.
The DC motor may not be rated for continuous use and overheat.
The motors maximum rotational speed may be exceeded on a gusty day resulting in bearing or mechanical failure of the armature, slip-rings and brushes.
A DC motor used as a generator does not provide a constant output voltage, when the shaft speed and the load current vary.
The output current may be high at a low 12V DC voltage requiring large diameter, low resistance cables between the generator and batteries.
The storage batteries and inverter electronics need to be as close as possible to the generator to reduce power loss in the cables.
The motors permanent magnets will attract ferromagnetic dust and debris.
Also relating to your situation, a special centre tapped “step-up” transformer is required to convert the 12V to 150V.
Then the alternative is to use a high voltage output wound rotor induction machine as a Wind Power Generator.