'at present there have' is a correct and usable phrase in written English.
You can use it to refer to a situation that has occurred in the current/recent time period. For example: At present there have been numerous reports of voter fraud throughout the state.
At present, there have been little research about thermal simulation.
At present, there have been a few reports on 2D discrete switched systems.
It is conceivable that, just as at present, there have always been teachers teaching and students studying the Veda.
At present, there have been a large number of researches concerning the electronic interference, but most of them are based on a certain kind of interference.
At present, there have been a lot of theoretical achievements in the field of the wide area response based power system security and stability control technology [5 10].
At present, there have been no direct talks between City and AC Milan over the transfer as Tevez's advisor first seeks to broker a deal.
Despite the perceived strength of cycling in the UK at present, there has been consistent criticism of the low financial rewards and lack of competitive opportunities for women in the sport.
At present, there has been no DNA fingerprinting of prehistoric rice in Thailand.
While technical research and development into CDU options is accelerating, at present there has been little research into public acceptance of the technology.
At present there has been a limited effort by the community in developing a systematic approach for sizing this unconventional class of flying vehicles.
At present, there has been less results from pilot-scale experiments on anaerobic co-digestion system, especially as an on-site system for high-rise building application.
