How to generate 30 PWM singals using MAX II starter kit

You need to take a good look at the documentation and see what each kit has and how you can make use of it.

1) Each kit has it's own oscillator. From a quick look at the specs, the dsp2812 kit has a 150 MHz clock oscillator and the MAX II kit has a 16 MHz clock oscillator.

2) The MAX II can handle 150 MHz but if you want to operate the interface between the MAX and the dsp at 150 MHz, you'll need a well designed PCB.

Operating at 16 MHz can be done with just wires connecting the two boards.

3) First, figure out what the FPGA needs to do. Then, you can implement it and simulate it and see what FPGA you need.

You need to take a look at the dsp2812 kit, the DSP chip in it and figure out what kind of interface it presents on the I/O expansion pins.

Then figure out what you need to have the dsp and the FPGA do.