Abstract: To meet the stringent requirements of high-power aeronautic hydraulic electric pumps for the driving system in terms of function, performance and reliability, this paper designs a high-power hydraulic electric pump system controller based on the DSP+FPGA architecture. The main-control circuit of the controller adopts the DSP+FPGA architecture to realize high-speed acquisition and computation of multi-channel control signals. A field-oriented control （FOC） strategy based on maximum torque per ampere （MTPA） is adopted to satisfy the high-performance and high-efficiency motion-control demands of the interior permanent-magnet synchronous motor （IPMSM）. The experimental results show that the proposed system controller can reliably drive a 100 kW permanent-magnet synchronous motor under the voltage level of 540 V, with the overall efficiency reaching more than 95%.