Water-cooled heat sink for modular series connection type high-voltage frequency converter

The invention discloses a water-cooled heat sink for a modular series connection type high-voltage frequency converter water-cooled heat sink. The water-cooled heat sink for the modular series connection type high-voltage frequency converter comprises a modular series connection type high-voltage frequency converter body, wherein a low-voltage power module series partial voltage topological structure is adopted in a main circuit of the modular series connection type high-voltage frequency converter body, a water-cooled heat sink is arranged in the modular series connection type high-voltage frequency converter body, the water-cooled heat sink is mainly composed of multiple independent heat dissipation substrates and a water-cooling plate embedded with a waterway channel, the water-coolingplate is made from a novel insulating heat conductive material, a water inlet, a water outlet and a mounting hole are formed in the back of the water-cooling plate, and the water-cooling plate is fastened and connected with a