To transform single phase voltages/currents to 
shift your voltage/current by 90 degrees and use this value as β and your original signal as α. This can then be converted to dq0 using library blocks available in simulink.
shift your voltage/current by 90 degrees and use this value as β and your original signal as α. This can then be converted to dq0 using library blocks available in simulink. It is difficult to say what the expected output is without knowing about your system but, generally d and q are dc values.
